| Abildgaardia ovata | (Burm.f.) Kral | Cyperaceae | 8 |
| Abutilon grandifolium | (Willd.) Sweet | Malvaceae | 8 |
| Acaena ovalifolia | Ruiz & Pav. | Rosaceae | 8 |
| Acaena pinnatifida | Ruiz & Pav. | Rosaceae | 8 |
| Acalypha communis | Müll.Arg. | Euphorbiaceae | 8 |
| Acalypha herzogiana | Pax & K.Hoffm. | Euphorbiaceae | 8 |
| Acalypha poiretii | Spreng. | Euphorbiaceae | 8 |
| Acanthocalycium rhodotrichum | (K.Schum.) Schlumpb. | Cactaceae | 8 |
| Acanthospermum australe | (Loefl.) Kuntze | Asteraceae | 8 |
| Acanthospermum hispidum | DC. | Asteraceae | 8 |
| Acanthostachys strobilacea | (Schult. & Schult.f.) Klotzsch | Bromeliaceae | 8 |
| Acanthostyles buniifolius | (Hook. & Arn.) R.M.King & H.Rob. | Asteraceae | 8 |
| Acanthosyris falcata | Griseb. | Santalaceae | 8 |
| Acanthosyris spinescens | Griseb. | Santalaceae | 8 |
| Acianthera pubescens | (Lindl.) Pridgeon & M.W.Chase | Orchidaceae | 8 |
| Acianthera sonderiana | (Rchb.f.) Pridgeon & M.W.Chase | Orchidaceae | 8 |
| Acicarpha tribuloides | Juss. | Calyceraceae | 8 |
| Acmella decumbens | (Sm.) R.K.Jansen | Asteraceae | 8 |
| Acrocomia totai | Mart. | Arecaceae | 8 |
| Acrostichum danaeifolium | Langsd. & Fisch. | Pteridaceae | 8 |
| Adenaria floribunda | Kunth | Lythraceae | 8 |
| Adesmia corymbosa | Clos | Fabaceae | 8 |
| Adesmia incana | Vogel | Fabaceae | 8 |
| Adiantopsis chlorophylla | (Sw.) Fée | Pteridaceae | 8 |
| Adiantopsis radiata | (L.) Fée | Pteridaceae | 8 |
| Adiantum chilense | Kaulf. | Pteridaceae | 8 |
| Adiantum latifolium | Lam. | Pteridaceae | 8 |
| Adiantum lorentzii | Hieron. | Pteridaceae | 8 |
| Adiantum macrophyllum | Sw. | Pteridaceae | 8 |
| Adiantum poiretii | Wikstr. | Pteridaceae | 8 |
| Adiantum raddianum | C.Presl | Pteridaceae | 8 |
| Aechmea bromeliifolia | (Rudge) Baker ex Benth. & Hook.f. | Bromeliaceae | 8 |
| Aechmea calyculata | (É.Morren) Baker | Bromeliaceae | 8 |
| Aechmea distichantha | Lem. | Bromeliaceae | 8 |
| Aechmea recurvata | (Klotzsch) L.B.Sm. | Bromeliaceae | 8 |
| Aegiphila verticillata | Vell. | Lamiaceae | 8 |
| Aeschynomene americana | L. | Fabaceae | 8 |
| Aeschynomene montevidensis | Vogel | Fabaceae | 8 |
| Agalinis communis | (Cham. & Schltdl.) D'Arcy | Orobanchaceae | 8 |
| Agalinis genistifolia | (Cham. & Schltdl.) D'Arcy | Orobanchaceae | 8 |
| Agrostis perennans | (Walter) Tuck. | Poaceae | 8 |
| Allenrolfea patagonica | (Moq.) Kuntze | Chenopodiaceae | 8 |
| Allenrolfea vaginata | (Griseb.) Kuntze | Chenopodiaceae | 8 |
| Allionia choisyi | Standl. | Nyctaginaceae | 8 |
| Allionia incarnata | L. | Nyctaginaceae | 8 |
| Allophylus edulis | (A.St.-Hil., A.Juss. & Cambess.) Radlk. ex Warm. | Sapindaceae | 8 |
| Allophylus guaraniticus | (A.St.-Hil.) Radlk. | Sapindaceae | 8 |
| Allophylus laevigatus | Radlk. | Sapindaceae | 8 |
| Aloysia gratissima | (Gillies & Hook.) Tronc. | Verbenaceae | 8 |
| Aloysia virgata | (Ruiz & Pav.) Juss. | Verbenaceae | 8 |
| Alsophila setosa | Kaulf. | Cyatheaceae | 8 |
| Alstroemeria psittacina | Lehm. | Alstroemeriaceae | 8 |
| Alternanthera brasiliana | (L.) Kuntze | Amaranthaceae | 8 |
| Alternanthera caracasana | Kunth | Amaranthaceae | 8 |
| Alternanthera paronychioides | A.St.-Hil. | Amaranthaceae | 8 |
| Alternanthera philoxeroides | (Mart.) Griseb. | Amaranthaceae | 8 |
| Alternanthera pungens | Kunth | Amaranthaceae | 8 |
| Amaranthus blitum | L. | Amaranthaceae | 8 |
| Amaranthus deflexus | L. | Amaranthaceae | 8 |
| Amaranthus hybridus | L. | Amaranthaceae | 8 |
| Amaranthus muricatus | (Moq.) Hieron. | Amaranthaceae | 8 |
| Amaranthus spinosus | L. | Amaranthaceae | 8 |
| Amaranthus viridis | L. | Amaranthaceae | 8 |
| Amauropelta achalensis | (Hieron.) Salino & T.E.Almeida | Thelypteridaceae | 8 |
| Amauropelta argentina | (Hieron.) Salino & T.E.Almeida | Thelypteridaceae | 8 |
| Ambrosia tenuifolia | Spreng. | Asteraceae | 8 |
| Ammannia auriculata | Willd. | Lythraceae | 8 |
| Ammannia latifolia | L. | Lythraceae | 8 |
| Amphilophium carolinae | (Lindl.) L.G.Lohmann | Bignoniaceae | 8 |
| Amphilophium crucigerum | (L.) L.G.Lohmann | Bignoniaceae | 8 |
| Amphilophium paniculatum | (L.) Kunth | Bignoniaceae | 8 |
| Amsinckia calycina | (Moris) Chater | Boraginaceae | 8 |
| Ananas comosus | (L.) Merr. | Bromeliaceae | 8 |
| Ananas macrodontes | É.Morren | Bromeliaceae | 8 |
| Anchietea pyrifolia | (Mart.) G.Don | Violaceae | 8 |
| Andropogon bicornis | L. | Poaceae | 8 |
| Anemia phyllitidis | (L.) Sw. | Anemiaceae | 8 |
| Anemia tomentosa | (Savigny) Sw. | Anemiaceae | 8 |
| Anemone decapetala | Ard. | Ranunculaceae | 8 |
| Angelonia integerrima | Spreng. | Plantaginaceae | 8 |
| Aniseia martinicensis | (Jacq.) Choisy | Convolvulaceae | 8 |
| Annona rugulosa | (Schltdl.) H.Rainer | Annonaceae | 8 |
| Anoda cristata | (L.) Schltdl. | Malvaceae | 8 |
| Anredera cordifolia | (Ten.) Steenis | Basellaceae | 8 |
| Apium prostratum | Labill. ex Vent. | Apiaceae | 8 |
| Apteria aphylla | (Nutt.) Barnhart ex Small | Burmanniaceae | 8 |
| Aquarius grandiflorus | (Cham. & Schltdl.) Christenh. & Byng | Alismataceae | 8 |
| Arachis glabrata | Benth. | Fabaceae | 8 |
| Araucaria angustifolia | (Bertol.) Kuntze | Araucariaceae | 8 |
| Araujia angustifolia | (Hook. & Arn.) Steud. | Apocynaceae | 8 |
| Araujia brachystephana | (Griseb.) Fontella & Goyder | Apocynaceae | 8 |
| Araujia megapotamica | (Spreng.) G.Don | Apocynaceae | 8 |
| Araujia odorata | (Hook. & Arn.) Fontella & Goyder | Apocynaceae | 8 |
| Araujia sericifera | Brot. | Apocynaceae | 8 |
| Araujia variegata | (Griseb.) Fontella & Goyder | Apocynaceae | 8 |
| Arenaria digyna | Willd. ex D.F.K.Schltdl. | Caryophyllaceae | 8 |
| Arenaria lanuginosa | (Michx.) Rohrb. | Caryophyllaceae | 8 |
| Argemone subfusiformis | Ownbey | Papaveraceae | 8 |
| Argyrochosma nivea | (Poir.) Windham | Pteridaceae | 8 |
| Aristida adscensionis | L. | Poaceae | 8 |
| Aristida mendocina | Phil. | Poaceae | 8 |
| Aristolochia argentina | Griseb. | Aristolochiaceae | 8 |
| Aristolochia fimbriata | Cham. | Aristolochiaceae | 8 |
| Aristolochia lingua | Malme | Aristolochiaceae | 8 |
| Aristolochia littoralis | Parodi | Aristolochiaceae | 8 |
| Aristolochia odoratissima | L. | Aristolochiaceae | 8 |
| Aristolochia triangularis | Cham. | Aristolochiaceae | 8 |
| Aristotelia chilensis | (Molina) Stuntz | Elaeocarpaceae | 8 |
| Arjona patagonica | Hombr. & Jacquinot ex Decne. | Schoepfiaceae | 8 |
| Armeria curvifolia | Bertero | Plumbaginaceae | 8 |
| Arquita mimosifolia | (Griseb.) Gagnon, G.P.Lewis & C.E.Hughes | Fabaceae | 8 |
| Asclepias mellodora | A.St.-Hil. | Apocynaceae | 8 |
| Aspidosperma polyneuron | Müll.Arg. | Apocynaceae | 8 |
| Aspidosperma quebracho-blanco | Schltdl. | Apocynaceae | 8 |
| Asplenium dareoides | Desv. | Aspleniaceae | 8 |
| Asplenium monanthes | L. | Aspleniaceae | 8 |
| Asplenium praemorsum | Sw. | Aspleniaceae | 8 |
| Asplenium resiliens | Kunze | Aspleniaceae | 8 |
| Asplenium serra | Langsd. & Fisch. | Aspleniaceae | 8 |
| Aster squamatus | (Spreng.) Hieron. | Asteraceae | 8 |
| Astraea lobata | (L.) Klotzsch | Euphorbiaceae | 8 |
| Athenaea fasciculata | (Vell.) I.M.C.Rodrigues & Stehmann | Solanaceae | 8 |
| Atriplex pamparum | Griseb. | Chenopodiaceae | 8 |
| Austroblechnum lechleri | (T.Moore) Gasper & V.A.O.Dittrich | Blechnaceae | 8 |
| Austroblechnum penna-marina | (Poir.) Gasper & V.A.O.Dittrich | Blechnaceae | 8 |
| Austrobrickellia patens | (Hook. & Arn.) R.M.King & H.Rob. | Asteraceae | 8 |
| Austrocactus bertinii | (J.F.Cels) Britton & Rose | Cactaceae | 8 |
| Avenella flexuosa | (L.) Drejer | Poaceae | 8 |
| Axonopus compressus | (Sw.) P.Beauv. | Poaceae | 8 |
| Axonopus fissifolius | (Raddi) Kuhlm. | Poaceae | 8 |
| Axonopus furcatus | (Flüggé) Hitchc. | Poaceae | 8 |
| Ayenia australis | (A.St.-Hil.) Christenh. & Byng | Malvaceae | 8 |
| Ayenia filipes | (Mart. ex K.Schum.) Christenh. & Byng | Malvaceae | 8 |
| Ayenia odonellii | Cristóbal | Malvaceae | 8 |
| Ayenia urticifolia | (K.Schum.) Christenh. & Byng | Malvaceae | 8 |
| Azolla filiculoides | Lam. | Salviniaceae | 8 |
| Azorella biloba | (Schltdl.) Wedd. | Apiaceae | 8 |
| Azorella prolifera | (Cav.) G.M.Plunkett & A.N.Nicolas | Apiaceae | 8 |
| Baccharis aliena | (Spreng.) Joch.Müll. | Asteraceae | 8 |
| Baccharis anomala | DC. | Asteraceae | 8 |
| Baccharis artemisioides | Hook. & Arn. | Asteraceae | 8 |
| Baccharis articulata | Pers. | Asteraceae | 8 |
| Baccharis coridifolia | DC. | Asteraceae | 8 |
| Baccharis darwinii | Hook. & Arn. | Asteraceae | 8 |
| Baccharis dracunculifolia | DC. | Asteraceae | 8 |
| Baccharis genistelloides | (Lam.) Pers. | Asteraceae | 8 |
| Baccharis glutinosa | Pers. | Asteraceae | 8 |
| Baccharis juncea | (Cass.) Desf. | Asteraceae | 8 |
| Baccharis linearifolia | Pers. | Asteraceae | 8 |
| Baccharis notosergila | Griseb. | Asteraceae | 8 |
| Baccharis ochracea | Spreng. | Asteraceae | 8 |
| Baccharis phyteumoides | DC. | Asteraceae | 8 |
| Baccharis punctulata | DC. | Asteraceae | 8 |
| Baccharis salicifolia | (Ruiz & Pav.) Pers. | Asteraceae | 8 |
| Baccharis semiserrata | DC. | Asteraceae | 8 |
| Baccharis spicata | (Lam.) Baill. | Asteraceae | 8 |
| Baccharis trinervis | Pers. | Asteraceae | 8 |
| Baccharis ulicina | Hook. & Arn. | Asteraceae | 8 |
| Baccharis vulneraria | Baker | Asteraceae | 8 |
| Bacopa monnieri | (L.) Wettst. | Plantaginaceae | 8 |
| Balfourodendron riedelianum | (Engl.) Engl. | Rutaceae | 8 |
| Barrosoa candolleana | (Hook. & Arn.) R.M.King & H.Rob. | Asteraceae | 8 |
| Bauhinia forficata | Link | Fabaceae | 8 |
| Begonia cucullata | Willd. | Begoniaceae | 8 |
| Begonia fischeri | Schrank | Begoniaceae | 8 |
| Berberis grevilleana | Gillet | Berberidaceae | 8 |
| Berberis ruscifolia | Lam. | Berberidaceae | 8 |
| Bidens laevis | (L.) Britton, Sterns & Poggenb. | Asteraceae | 8 |
| Bidens pilosa | L. | Asteraceae | 8 |
| Bidens subalternans | DC. | Asteraceae | 8 |
| Bidens triplinervia | Kunth | Asteraceae | 8 |
| Bignonia callistegioides | Cham. | Bignoniaceae | 8 |
| Billbergia nutans | H.Wendl. ex Regel | Bromeliaceae | 8 |
| Bipinnula penicillata | (Rchb.f.) Cisternas & Salazar | Orchidaceae | 8 |
| Bixa orellana | L. | Bixaceae | 8 |
| Blechnum asplenioides | Sw. | Blechnaceae | 8 |
| Blechnum hastatum | Kaulf. | Blechnaceae | 8 |
| Blechnum occidentale | L. | Blechnaceae | 8 |
| Blepharocalyx salicifolius | (Kunth) O.Berg | Myrtaceae | 8 |
| Blumenbachia insignis | Schrad. | Loasaceae | 8 |
| Boehmeria caudata | Sw. | Urticaceae | 8 |
| Boehmeria cylindrica | (L.) Sw. | Urticaceae | 8 |
| Boerhavia diffusa | L. | Nyctaginaceae | 8 |
| Bolboschoenus maritimus | (L.) Palla | Cyperaceae | 8 |
| Bolboschoenus robustus | (Pursh) Soják | Cyperaceae | 8 |
| Bomarea edulis | (Tussac) Herb. | Alstroemeriaceae | 8 |
| Bothriochloa barbinodis | (Lag.) Herter | Poaceae | 8 |
| Bothriochloa laguroides | (DC.) Herter | Poaceae | 8 |
| Bothriochloa longipaniculata | (Gould) Allred & Gould | Poaceae | 8 |
| Bothriochloa torreyana | (Steud.) Scrivanti & Anton | Poaceae | 8 |
| Bouchetia anomala | (Miers) Britton & Rusby | Solanaceae | 8 |
| Bougainvillea campanulata | Heimerl | Nyctaginaceae | 8 |
| Bougainvillea spinosa | (Cav.) Heimerl | Nyctaginaceae | 8 |
| Bougainvillea stipitata | Griseb. | Nyctaginaceae | 8 |
| Bouteloua aristidoides | (Kunth) Griseb. | Poaceae | 8 |
| Bouteloua barbata | Lag. | Poaceae | 8 |
| Bouteloua curtipendula | (Michx.) Torr. | Poaceae | 8 |
| Bouteloua megapotamica | (Spreng.) Kuntze | Poaceae | 8 |
| Bowlesia incana | Ruiz & Pav. | Apiaceae | 8 |
| Brasiliopuntia brasiliensis | (Willd.) A.Berger | Cactaceae | 8 |
| Brassavola tuberculata | Hook. | Orchidaceae | 8 |
| Bromelia balansae | Mez | Bromeliaceae | 8 |
| Bromelia hieronymi | Mez | Bromeliaceae | 8 |
| Bromelia serra | Griseb. | Bromeliaceae | 8 |
| Bromus brevis | Steud. | Poaceae | 8 |
| Bromus catharticus | Vahl | Poaceae | 8 |
| Brunfelsia australis | Benth. | Solanaceae | 8 |
| Buchnera pusilla | Kunth | Orobanchaceae | 8 |
| Buddleja cordobensis | Griseb. | Scrophulariaceae | 8 |
| Buddleja stachyoides | Cham. & Schltdl. | Scrophulariaceae | 8 |
| Buddleja tubiflora | Benth. | Scrophulariaceae | 8 |
| Bulnesia foliosa | Griseb. | Zygophyllaceae | 8 |
| Burmannia capitata | (Walter ex J.F.Gmel.) Mart. | Burmanniaceae | 8 |
| Butia yatay | (Mart.) Becc. | Arecaceae | 8 |
| Cabomba caroliniana | A.Gray | Cabombaceae | 8 |
| Calandrinia ciliata | (Ruiz & Pav.) DC. | Montiaceae | 8 |
| Calceolaria parviflora | Gillies ex Benth. | Calceolariaceae | 8 |
| Calceolaria teucrioides | Griseb. | Calceolariaceae | 8 |
| Calea uniflora | Less. | Asteraceae | 8 |
| Calibrachoa parviflora | (Juss.) D'Arcy | Solanaceae | 8 |
| Calliandra parvifolia | (Hook. & Arn.) Speg. | Fabaceae | 8 |
| Calliandra selloi | (Spreng.) J.F.Macbr. | Fabaceae | 8 |
| Calliandra tweediei | Benth. | Fabaceae | 8 |
| Callianthe pauciflora | (A.St.-Hil.) Dorr | Malvaceae | 8 |
| Callianthe picta | (Gillies ex Hook. & Arn.) Donnell | Malvaceae | 8 |
| Callisia repens | (Jacq.) L. | Commelinaceae | 8 |
| Callitriche heterophylla | Pursh | Plantaginaceae | 8 |
| Callitriche terrestris | Raf. | Plantaginaceae | 8 |
| Calophyllum brasiliense | Cambess. | Calophyllaceae | 8 |
| Calopogonium caeruleum | (Benth.) C.Wright | Fabaceae | 8 |
| Calopogonium mucunoides | Desv. | Fabaceae | 8 |
| Calycera crassifolia | (Miers) Hicken | Calyceraceae | 8 |
| Calyptocarpus brasiliensis | (Nees & Mart.) B.L.Turner | Asteraceae | 8 |
| Camissonia dentata | Reiche | Onagraceae | 8 |
| Camonea umbellata | (L.) A.R.Simões & Staples | Convolvulaceae | 8 |
| Campomanesia guazumifolia | (Cambess.) O.Berg | Myrtaceae | 8 |
| Camptosema rubicundum | Hook. & Arn. | Fabaceae | 8 |
| Campuloclinium macrocephalum | DC. | Asteraceae | 8 |
| Canavalia bonariensis | Lindl. | Fabaceae | 8 |
| Canna glauca | L. | Cannaceae | 8 |
| Canna indica | L. | Cannaceae | 8 |
| Canna paniculata | Ruiz & Pav. | Cannaceae | 8 |
| Cantinoa mutabilis | (Rich.) Harley & J.F.B.Pastore | Lamiaceae | 8 |
| Capanemia micromera | Barb.Rodr. | Orchidaceae | 8 |
| Caperonia castaneifolia | (L.) A.St.-Hil. | Euphorbiaceae | 8 |
| Caperonia palustris | A.St.-Hil. | Euphorbiaceae | 8 |
| Capraria biflora | L. | Scrophulariaceae | 8 |
| Capsicum chacoense | Hunz. | Solanaceae | 8 |
| Cardiospermum corindum | L. | Sapindaceae | 8 |
| Cardiospermum grandiflorum | Sw. | Sapindaceae | 8 |
| Cardiospermum halicacabum | L. | Sapindaceae | 8 |
| Carex aureolensis | Steud. | Cyperaceae | 8 |
| Carex brachycalama | Griseb. | Cyperaceae | 8 |
| Carex canescens | L. | Cyperaceae | 8 |
| Carex excelsa | Poepp. ex Kunth | Cyperaceae | 8 |
| Carex gayana | Desv. | Cyperaceae | 8 |
| Carex hamata | Sw. | Cyperaceae | 8 |
| Carex phleoides | Cav. | Cyperaceae | 8 |
| Cascabela thevetia | (L.) Lippold | Apocynaceae | 8 |
| Casearia decandra | Jacq. | Salicaceae | 8 |
| Casearia sylvestris | Sw. | Salicaceae | 8 |
| Castela coccinea | Griseb. | Simaroubaceae | 8 |
| Castela tweediei | Planch. | Simaroubaceae | 8 |
| Castilleja arvensis | Schltdl. & Cham. | Orobanchaceae | 8 |
| Cayaponia bonariensis | (Mill.) Mart.Crov. | Cucurbitaceae | 8 |
| Cayaponia citrullifolia | (Griseb.) Cogn. ex Griseb. | Cucurbitaceae | 8 |
| Cayaponia podantha | Cogn. | Cucurbitaceae | 8 |
| Cecropia pachystachya | Trécul | Urticaceae | 8 |
| Cedrela fissilis | Vell. | Meliaceae | 8 |
| Cedrela odorata | L. | Meliaceae | 8 |
| Ceiba chodatii | (Hassl.) Ravenna | Malvaceae | 8 |
| Ceiba speciosa | (A.St.-Hil., A.Juss. & Cambess.) Ravenna | Malvaceae | 8 |
| Celtis iguanaea | (Jacq.) Sarg. | Cannabaceae | 8 |
| Celtis pallida | Torr. | Cannabaceae | 8 |
| Celtis tala | Gillies ex Planch. | Cannabaceae | 8 |
| Cenchrus echinatus | L. | Poaceae | 8 |
| Cenchrus latifolius | (Spreng.) Morrone | Poaceae | 8 |
| Cenchrus myosuroides | Kunth | Poaceae | 8 |
| Cenchrus spinifex | Cav. | Poaceae | 8 |
| Centella erecta | (L.f.) Fernald | Apiaceae | 8 |
| Centratherum punctatum | Cass. | Asteraceae | 8 |
| Centrosema brasilianum | (L.) Benth. | Fabaceae | 8 |
| Centrosema virginianum | (L.) Benth. | Fabaceae | 8 |
| Cephalanthus glabratus | (Spreng.) K.Schum. | Rubiaceae | 8 |
| Ceratophyllum demersum | L. | Ceratophyllaceae | 8 |
| Cereus aethiops | Haw. | Cactaceae | 8 |
| Cereus forbesii | C.F.Först. | Cactaceae | 8 |
| Cereus hildmannianus | K.Schum. | Cactaceae | 8 |
| Cereus stenogonus | K.Schum. | Cactaceae | 8 |
| Cestrum axillare | Vell. | Solanaceae | 8 |
| Cestrum euanthes | Schltdl. | Solanaceae | 8 |
| Cestrum parqui | (Lam.) L'Hér. | Solanaceae | 8 |
| Cestrum strigilatum | Ruiz & Pav. | Solanaceae | 8 |
| Chaetogastra gracilis | (Bonpl.) DC. | Melastomataceae | 8 |
| Chamaecrista calycioides | (DC. ex Collad.) Greene | Fabaceae | 8 |
| Chamaecrista desvauxii | (Collad.) Killip | Fabaceae | 8 |
| Chamaecrista flexuosa | (L.) Greene | Fabaceae | 8 |
| Chamaecrista nictitans | (L.) Moench | Fabaceae | 8 |
| Chamaecrista rotundifolia | (Pers.) Greene | Fabaceae | 8 |
| Chamissoa altissima | Kunth | Amaranthaceae | 8 |
| Chaptalia exscapa | (Pers.) Baker | Asteraceae | 8 |
| Chaptalia integerrima | (Vell.) Burkart | Asteraceae | 8 |
| Chaptalia nutans | (L.) Pol. | Asteraceae | 8 |
| Chaptalia piloselloides | (Vahl) Baker | Asteraceae | 8 |
| Chascolytrum subaristatum | (Lam.) Desv. | Poaceae | 8 |
| Cheiroglossa palmata | (L.) C.Presl | Ophioglossaceae | 8 |
| Chenopodium retusum | (Moq.) Juss. ex Moq. | Chenopodiaceae | 8 |
| Chiococca alba | (L.) Hitchc. | Rubiaceae | 8 |
| Chiropetalum griseum | Griseb. | Euphorbiaceae | 8 |
| Chloraea membranacea | Lindl. | Orchidaceae | 8 |
| Chloris pycnothrix | Trin. | Poaceae | 8 |
| Chloris virgata | Sw. | Poaceae | 8 |
| Chromolaena hirsuta | (Hook. & Arn.) R.M.King & H.Rob. | Asteraceae | 8 |
| Chromolaena hookeriana | (Griseb.) R.M.King & H.Rob. | Asteraceae | 8 |
| Chromolaena laevigata | (Lam.) R.M.King & H.Rob. | Asteraceae | 8 |
| Chromolaena odorata | (L.) R.M.King & H.Rob. | Asteraceae | 8 |
| Chrysolaena flexuosa | (Sims) H.Rob. | Asteraceae | 8 |
| Chuquiraga erinacea | D.Don | Asteraceae | 8 |
| Cicendia quadrangularis | (Lam.) Griseb. | Gentianaceae | 8 |
| Cienfuegosia drummondii | (A.Gray) Lewton | Malvaceae | 8 |
| Cinnagrostis viridiflavescens | (Poir.) P.M.Peterson, Soreng, Romasch. & Barberá | Poaceae | 8 |
| Cissampelos pareira | L. | Menispermaceae | 8 |
| Cissus palmata | Poir. | Vitaceae | 8 |
| Cissus verticillata | (L.) Nicolson & C.E.Jarvis | Vitaceae | 8 |
| Citharexylum montevidense | (Spreng.) Moldenke | Verbenaceae | 8 |
| Citharexylum myrianthum | Cham. | Verbenaceae | 8 |
| Cladium mariscus | (L.) Pohl | Cyperaceae | 8 |
| Cleistocactus baumannii | (Lem.) Lem. | Cactaceae | 8 |
| Clematicissus striata | (Ruiz & Pav.) Lombardi | Vitaceae | 8 |
| Clematis campestris | A.St.-Hil. | Ranunculaceae | 8 |
| Cleome cordobensis | Eichler ex Griseb. | Cleomaceae | 8 |
| Clinopodium brownei | (Sw.) Kuntze | Lamiaceae | 8 |
| Clitoria guianensis | (Aubl.) Benth. | Fabaceae | 8 |
| Cnidoscolus urens | (L.) Arthur | Euphorbiaceae | 8 |
| Coccocypselum lanceolatum | (Ruiz & Pav.) Pers. | Rubiaceae | 8 |
| Cochliasanthus caracalla | (L.) Trew | Fabaceae | 8 |
| Coleataenia prionitis | (Nees) Soreng | Poaceae | 8 |
| Collaea argentina | Griseb. | Fabaceae | 8 |
| Colletia paradoxa | (Spreng.) Escal. | Rhamnaceae | 8 |
| Colletia spinosissima | J.F.Gmel. | Rhamnaceae | 8 |
| Cologania broussonetii | (Balb.) DC. | Fabaceae | 8 |
| Combretum fruticosum | (Loefl.) Stuntz | Combretaceae | 8 |
| Combretum laxum | Jacq. | Combretaceae | 8 |
| Combretum leprosum | Mart. | Combretaceae | 8 |
| Commelina erecta | L. | Commelinaceae | 8 |
| Commelina longicaulis | Jacq. | Commelinaceae | 8 |
| Commelina obliqua | Vahl | Commelinaceae | 8 |
| Condalia microphylla | Cav. | Rhamnaceae | 8 |
| Convolvulus bonariensis | Cav. | Convolvulaceae | 8 |
| Convolvulus crenatifolius | Ruiz & Pav. | Convolvulaceae | 8 |
| Convolvulus hermanniae | L'Hér. | Convolvulaceae | 8 |
| Conyza laevigata | (Rich.) Pruski | Asteraceae | 8 |
| Copaifera langsdorffii | Desf. | Fabaceae | 8 |
| Copernicia alba | Morong | Arecaceae | 8 |
| Cortaderia hieronymi | (Kuntze) N.P.Barker & H.P.Linder | Poaceae | 8 |
| Cortaderia selloana | (Schult. & Schult.f.) Asch. & Graebn. | Poaceae | 8 |
| Costus arabicus | L. | Costaceae | 8 |
| Cottea pappophoroides | Kunth | Poaceae | 8 |
| Cotula mexicana | (DC.) Cabrera | Asteraceae | 8 |
| Craniolaria integrifolia | Cham. | Martyniaceae | 8 |
| Crassula connata | A.Berger | Crassulaceae | 8 |
| Crateva tapia | L. | Capparaceae | 8 |
| Cressa truxillensis | Kunth | Convolvulaceae | 8 |
| Crotalaria incana | L. | Fabaceae | 8 |
| Crotalaria micans | Link | Fabaceae | 8 |
| Croton bonplandianus | Baill. | Euphorbiaceae | 8 |
| Croton glandulosus | L. | Euphorbiaceae | 8 |
| Croton gracilipes | Baill. | Euphorbiaceae | 8 |
| Croton hirtus | L'Hér. | Euphorbiaceae | 8 |
| Croton lanatus | Lam. | Euphorbiaceae | 8 |
| Croton subpannosus | Griseb. | Euphorbiaceae | 8 |
| Croton urucurana | Baill. | Euphorbiaceae | 8 |
| Ctenodon viscidulus | (Michx.) D.B.O.S.Cardoso & A.Delgado | Fabaceae | 8 |
| Cucurbita maxima | Duchesne | Cucurbitaceae | 8 |
| Cucurbitella asperata | (Gillies ex Hook. & Arn.) Walp. | Cucurbitaceae | 8 |
| Cupania vernalis | Cambess. | Sapindaceae | 8 |
| Cuphea carthagenensis | (Jacq.) J.F.Macbr. | Lythraceae | 8 |
| Cuphea fruticosa | Spreng. | Lythraceae | 8 |
| Cuphea glutinosa | Cham. & Schltdl. | Lythraceae | 8 |
| Cuphea racemosa | (L.f.) Spreng. | Lythraceae | 8 |
| Cyclolepis genistoides | Gillies ex D.Don | Asteraceae | 8 |
| Cyclopogon elatus | (Sw.) Schltr. | Orchidaceae | 8 |
| Cyclosorus interruptus | (Willd.) H.Itô | Thelypteridaceae | 8 |
| Cyclospermum leptophyllum | (Pers.) Sprague | Apiaceae | 8 |
| Cynanchum montevidense | Spreng. | Apocynaceae | 8 |
| Cypella armosa | Ravenna | Iridaceae | 8 |
| Cypella herbertii | (Lindl.) Herb. | Iridaceae | 8 |
| Cyperus aggregatus | (Willd.) Endl. | Cyperaceae | 8 |
| Cyperus articulatus | L. | Cyperaceae | 8 |
| Cyperus bipartitus | Torr. | Cyperaceae | 8 |
| Cyperus blepharoleptos | Steud. | Cyperaceae | 8 |
| Cyperus brevifolius | (Rottb.) Hassk. | Cyperaceae | 8 |
| Cyperus entrerianus | Boeckeler | Cyperaceae | 8 |
| Cyperus eragrostis | Lam. | Cyperaceae | 8 |
| Cyperus esculentus | L. | Cyperaceae | 8 |
| Cyperus exaltatus | Retz. | Cyperaceae | 8 |
| Cyperus giganteus | Vahl | Cyperaceae | 8 |
| Cyperus hermaphroditus | (Jacq.) Standl. | Cyperaceae | 8 |
| Cyperus laevigatus | L. | Cyperaceae | 8 |
| Cyperus lanceolatus | Poir. | Cyperaceae | 8 |
| Cyperus luzulae | (L.) Retz. | Cyperaceae | 8 |
| Cyperus melanostachyus | Kunth | Cyperaceae | 8 |
| Cyperus meyenianus | Kunth | Cyperaceae | 8 |
| Cyperus ochraceus | Vahl | Cyperaceae | 8 |
| Cyperus odoratus | L. | Cyperaceae | 8 |
| Cyperus oxylepis | Nees ex Steud. | Cyperaceae | 8 |
| Cyperus polystachyos | Rottb. | Cyperaceae | 8 |
| Cyperus prolixus | Kunth | Cyperaceae | 8 |
| Cyperus seslerioides | Kunth | Cyperaceae | 8 |
| Cyperus sesquiflorus | (Torr.) Mattf. & Kük. | Cyperaceae | 8 |
| Cyperus squarrosus | L. | Cyperaceae | 8 |
| Cyperus subsquarrosus | (Muhl.) Bauters | Cyperaceae | 8 |
| Cyperus surinamensis | Rottb. | Cyperaceae | 8 |
| Cyperus trigynus | Spreng. | Cyperaceae | 8 |
| Cyperus virens | Michx. | Cyperaceae | 8 |
| Cyrtocymura scorpioides | (Lam.) H.Rob. | Asteraceae | 8 |
| Dalea elegans | Gillies ex Hook. | Fabaceae | 8 |
| Dalechampia scandens | L. | Euphorbiaceae | 8 |
| Daphnopsis racemosa | Griseb. | Thymelaeaceae | 8 |
| Dasyphyllum tomentosum | (Spreng.) Cabrera | Asteraceae | 8 |
| Daucus pusillus | Michx. | Apiaceae | 8 |
| Descurainia erodiifolia | (Phil.) Reiche | Brassicaceae | 8 |
| Desmanthus acuminatus | Benth. | Fabaceae | 8 |
| Desmanthus virgatus | (L.) Willd. | Fabaceae | 8 |
| Desmodium incanum | (Sw.) DC. | Fabaceae | 8 |
| Desmodium tortuosum | (Sw.) DC. | Fabaceae | 8 |
| Desmodium uncinatum | (Jacq.) DC. | Fabaceae | 8 |
| Dianthera comata | L. | Acanthaceae | 8 |
| Dicella nucifera | Chodat | Malpighiaceae | 8 |
| Dichondra microcalyx | (Hallier f.) Fabris | Convolvulaceae | 8 |
| Dichondra sericea | Sw. | Convolvulaceae | 8 |
| Dichorisandra hexandra | (Aubl.) Standl. | Commelinaceae | 8 |
| Dicksonia sellowiana | (C.Presl) Hook. | Dicksoniaceae | 8 |
| Dicliptera squarrosa | Nees | Acanthaceae | 8 |
| Didymopanax morototoni | (Aubl.) Decne. & Planch. | Araliaceae | 8 |
| Digitaria californica | (Benth.) Henrard | Poaceae | 8 |
| Digitaria eriostachya | Mez | Poaceae | 8 |
| Digitaria insularis | (L.) Mez ex Ekman | Poaceae | 8 |
| Dioclea virgata | (Rich.) Amshoff | Fabaceae | 8 |
| Dioscorea dodecaneura | Vell. | Dioscoreaceae | 8 |
| Diphasiastrum thyoides | (Willd.) Holub | Lycopodiaceae | 8 |
| Diplachne fusca | (L.) P.Beauv. | Poaceae | 8 |
| Disakisperma dubium | (Kunth) P.M.Peterson & N.Snow | Poaceae | 8 |
| Discaria americana | Gillies & Hook. | Rhamnaceae | 8 |
| Distichlis spicata | (L.) Greene | Poaceae | 8 |
| Distimake aegyptius | (L.) A.R.Simões & Staples | Convolvulaceae | 8 |
| Distimake cissoides | (Lam.) A.R.Simões & Staples | Convolvulaceae | 8 |
| Distimake dissectus | (Jacq.) A.R.Simões & Staples | Convolvulaceae | 8 |
| Ditaxis breviramea | (Müll.Arg.) Pax & K.Hoffm. | Euphorbiaceae | 8 |
| Dodonaea viscosa | Jacq. | Sapindaceae | 8 |
| Dolichandra cynanchoides | Cham. | Bignoniaceae | 8 |
| Dolichandra quadrivalvis | (Jacq.) L.G.Lohmann | Bignoniaceae | 8 |
| Dolichandra unguis-cati | (L.) L.G.Lohmann | Bignoniaceae | 8 |
| Dorstenia brasiliensis | Lam. | Moraceae | 8 |
| Doryopteris concolor | (Langsd. & Fisch.) Kuhn & Decken | Pteridaceae | 8 |
| Drosera brevifolia | Pursh | Droseraceae | 8 |
| Drosera communis | A.St.-Hil. | Droseraceae | 8 |
| Drymaria glandulosa | Bartl. | Caryophyllaceae | 8 |
| Dunalia brachyacantha | Miers | Solanaceae | 8 |
| Dyschoriste venturii | Leonard | Acanthaceae | 8 |
| Dysphania ambrosioides | (L.) Mosyakin & Clemants | Chenopodiaceae | 8 |
| Dysphania multifida | (L.) Mosyakin & Clemants | Chenopodiaceae | 8 |
| Echinopsis aurea | Britton & Rose | Cactaceae | 8 |
| Echinopsis oxygona | (Link) Zucc. ex Pfeiff. | Cactaceae | 8 |
| Eclipta elliptica | DC. | Asteraceae | 8 |
| Eclipta prostrata | (L.) L. | Asteraceae | 8 |
| Edrastima uniflora | (L.) Raf. | Rubiaceae | 8 |
| Ehretia cortesia | Gottschling | Ehretiaceae | 8 |
| Elaphoglossum gayanum | (Fée) T.Moore | Dryopteridaceae | 8 |
| Elatine brachysperma | A.Gray | Elatinaceae | 8 |
| Eleocharis atropurpurea | (Retz.) J.Presl & C.Presl | Cyperaceae | 8 |
| Eleocharis elegans | (Kunth) Roem. & Schult. | Cyperaceae | 8 |
| Eleocharis interstincta | (Vahl) Roem. & Schult. | Cyperaceae | 8 |
| Eleocharis macrostachya | Britton | Cyperaceae | 8 |
| Eleocharis montana | (Kunth) Roem. & Schult. | Cyperaceae | 8 |
| Eleocharis montevidensis | Kunth | Cyperaceae | 8 |
| Eleocharis obtusa | (Willd.) Schult. | Cyperaceae | 8 |
| Elephantopus mollis | Kunth | Asteraceae | 8 |
| Eleusine tristachya | (Lam.) Lam. | Poaceae | 8 |
| Elionurus muticus | (Spreng.) Kuntze | Poaceae | 8 |
| Elionurus tripsacoides | Willd. | Poaceae | 8 |
| Elodea densa | (Planch.) Casp. | Hydrocharitaceae | 8 |
| Emilia fosbergii | Nicolson | Asteraceae | 8 |
| Enneapogon desvauxii | P.Beauv. | Poaceae | 8 |
| Enterolobium contortisiliquum | (Vell.) Morong | Fabaceae | 8 |
| Enydra sessilis | DC. | Asteraceae | 8 |
| Ephedra tweedieana | C.A.Mey. | Ephedraceae | 8 |
| Epidendrum rigidum | Jacq. | Orchidaceae | 8 |
| Epilobium ciliatum | Raf. | Onagraceae | 8 |
| Epilobium denticulatum | Ruiz & Pav. | Onagraceae | 8 |
| Epilobium hirtigerum | A.Cunn. | Onagraceae | 8 |
| Epiphyllum phyllanthus | (L.) Haw. | Cactaceae | 8 |
| Equisetum bogotense | Kunth | Equisetaceae | 8 |
| Equisetum giganteum | L. | Equisetaceae | 8 |
| Eragrostis hypnoides | (Lam.) Britton, Sterns & Poggenb. | Poaceae | 8 |
| Erechtites hieraciifolius | (L.) Raf. ex DC. | Asteraceae | 8 |
| Erianthus giganteus | (Walter) P.Beauv. | Poaceae | 8 |
| Erigeron bonariensis | L. | Asteraceae | 8 |
| Erigeron floribundus | (Kunth) Sch.Bip. | Asteraceae | 8 |
| Erigeron primulifolium | Juss. ex Cass. | Asteraceae | 8 |
| Erigeron sumatrensis | Retz. | Asteraceae | 8 |
| Erioneuron pilosum | (Buckley) Nash | Poaceae | 8 |
| Eriosema brasiliense | (Vell.) H.F.Menezes, J.F.B.Pastore & L.P.Queiroz | Fabaceae | 8 |
| Eriosyce strausiana | (K.Schum.) Katt. | Cactaceae | 8 |
| Eryngium coronatum | Hook. & Arn. | Apiaceae | 8 |
| Eryngium ebracteatum | Lam. | Apiaceae | 8 |
| Eryngium eburneum | Decne. | Apiaceae | 8 |
| Eryngium echinatum | Urb. | Apiaceae | 8 |
| Eryngium elegans | Cham. & Schltdl. | Apiaceae | 8 |
| Eryngium horridum | Malme | Apiaceae | 8 |
| Eryngium nudicaule | Lam. | Apiaceae | 8 |
| Eryngium pandanifolium | Cham. & Schltdl. | Apiaceae | 8 |
| Eryngium paniculatum | Cav. & Dombey ex F.Delaroche | Apiaceae | 8 |
| Eryngium sanguisorba | Cham. & Schltdl. | Apiaceae | 8 |
| Eryngium serra | Cham. & Schltdl. | Apiaceae | 8 |
| Erythranthe glabrata | (Kunth) G.L.Nesom | Phrymaceae | 8 |
| Erythrina crista-galli | L. | Fabaceae | 8 |
| Erythrina falcata | Benth. | Fabaceae | 8 |
| Erythrina mulungu | Mart. ex Benth. | Fabaceae | 8 |
| Erythrostemon gilliesii | (Hook.) Klotzsch | Fabaceae | 8 |
| Escallonia bifida | Link & Otto | Escalloniaceae | 8 |
| Escallonia cordobensis | (Kuntze) Hosseus | Escalloniaceae | 8 |
| Escobedia grandiflora | (L.f.) Kuntze | Orobanchaceae | 8 |
| Eugenia involucrata | DC. | Myrtaceae | 8 |
| Eugenia myrcianthes | Nied. | Myrtaceae | 8 |
| Eugenia punicifolia | (Kunth) DC. | Myrtaceae | 8 |
| Eugenia pyriformis | Cambess. | Myrtaceae | 8 |
| Eugenia uniflora | L. | Myrtaceae | 8 |
| Eulophia alta | (L.) Fawc. & Rendle | Orchidaceae | 8 |
| Euphorbia berteroana | Balb. ex Spreng. | Euphorbiaceae | 8 |
| Euphorbia davidii | Subils | Euphorbiaceae | 8 |
| Euphorbia eichleri | Müll.Arg. | Euphorbiaceae | 8 |
| Euphorbia heterophylla | L. | Euphorbiaceae | 8 |
| Euphorbia hirta | L. | Euphorbiaceae | 8 |
| Euphorbia hypericifolia | L. | Euphorbiaceae | 8 |
| Euphorbia hyssopifolia | L. | Euphorbiaceae | 8 |
| Euphorbia lasiocarpa | Klotzsch | Euphorbiaceae | 8 |
| Euphorbia ophthalmica | Pers. | Euphorbiaceae | 8 |
| Euphorbia portulacoides | L. | Euphorbiaceae | 8 |
| Euphorbia potentilloides | Boiss. | Euphorbiaceae | 8 |
| Euphorbia prostrata | Aiton | Euphorbiaceae | 8 |
| Euphorbia serpens | Kunth | Euphorbiaceae | 8 |
| Euphorbia serpillifolia | Pers. | Euphorbiaceae | 8 |
| Euphorbia thymifolia | L. | Euphorbiaceae | 8 |
| Euploca mendocina | (Phil.) Diane & Hilger | Heliotropiaceae | 8 |
| Euploca procumbens | (Mill.) Diane & Hilger | Heliotropiaceae | 8 |
| Eustachys caribaea | (Spreng.) Herter | Poaceae | 8 |
| Eustachys petraea | (Sw.) Desv. | Poaceae | 8 |
| Euterpe edulis | Mart. | Arecaceae | 8 |
| Evolvulus alsinoides | (L.) L. | Convolvulaceae | 8 |
| Evolvulus arizonicus | A.Gray | Convolvulaceae | 8 |
| Evolvulus nummularius | (L.) L. | Convolvulaceae | 8 |
| Evolvulus sericeus | Sw. | Convolvulaceae | 8 |
| Evolvulus tenuis | Mart. ex Choisy | Convolvulaceae | 8 |
| Exostigma notobellidiastrum | (Griseb.) G.Sancho | Asteraceae | 8 |
| Facelis retusa | (Lam.) Sch.Bip. | Asteraceae | 8 |
| Faramea hyacinthina | Mart. | Rubiaceae | 8 |
| Feijoa sellowiana | (O.Berg) O.Berg | Myrtaceae | 8 |
| Festuca octoflora | Walter | Poaceae | 8 |
| Ficus citrifolia | Mill. | Moraceae | 8 |
| Ficus luschnathiana | (Miq.) Miq. | Moraceae | 8 |
| Fimbristylis autumnalis | (L.) Roem. & Schult. | Cyperaceae | 8 |
| Fimbristylis complanata | (Retz.) Link | Cyperaceae | 8 |
| Fimbristylis dichotoma | (L.) Vahl | Cyperaceae | 8 |
| Fimbristylis spadicea | (L.) Vahl | Cyperaceae | 8 |
| Fimbristylis vahlii | (Lam.) Link | Cyperaceae | 8 |
| Flaveria bidentis | (L.) Kuntze | Asteraceae | 8 |
| Fridericia chica | (Bonpl.) L.G.Lohmann | Bignoniaceae | 8 |
| Fuirena umbellata | Rottb. | Cyperaceae | 8 |
| Funastrum clausum | (Jacq.) Schltr. | Apocynaceae | 8 |
| Gaillardia megapotamica | Baker | Asteraceae | 8 |
| Galactia striata | (Jacq.) Urb. | Fabaceae | 8 |
| Galactia texana | (Scheele) A.Gray | Fabaceae | 8 |
| Galianthe brasiliensis | (Spreng.) E.L.Cabral & Bacigalupo | Rubiaceae | 8 |
| Galinsoga parviflora | Cav. | Asteraceae | 8 |
| Galinsoga quadriradiata | Ruiz & Pav. | Asteraceae | 8 |
| Galium hypocarpium | (L.) Endl. ex Griseb. | Rubiaceae | 8 |
| Gamochaeta americana | (Mill.) Wedd. | Asteraceae | 8 |
| Gamochaeta calviceps | (Fernald) Cabrera | Asteraceae | 8 |
| Gamochaeta pensylvanica | (Willd.) Cabrera | Asteraceae | 8 |
| Gaultheria phillyreifolia | (Pers.) Sleumer | Ericaceae | 8 |
| Gaultheria poeppigii | DC. | Ericaceae | 8 |
| Gavilea odoratissima | Poepp. | Orchidaceae | 8 |
| Gaya parviflora | (Phil.) Krapov. | Malvaceae | 8 |
| Genipa americana | L. | Rubiaceae | 8 |
| Gentianella multicaulis | (Gillies ex Griseb.) Fabris | Gentianaceae | 8 |
| Geoffroea decorticans | (Gillies ex Hook. & Arn.) Burkart | Fabaceae | 8 |
| Geoffroea spinosa | Jacq. | Fabaceae | 8 |
| Geophila macropoda | (Ruiz & Pav.) DC. | Rubiaceae | 8 |
| Geophila repens | (L.) I.M.Johnst. | Rubiaceae | 8 |
| Geranium core-core | Steud. | Geraniaceae | 8 |
| Geranium sessiliflorum | Cav. | Geraniaceae | 8 |
| Gibasis geniculata | (Jacq.) Rohweder | Commelinaceae | 8 |
| Gilia laciniata | Ruiz & Pav. | Polemoniaceae | 8 |
| Gleditsia amorphoides | (Griseb.) Taub. | Fabaceae | 8 |
| Glinus radiatus | (Ruiz & Pav.) Rohrb. | Molluginaceae | 8 |
| Gochnatia glutinosa | D.Don ex Hook. & Arn. | Asteraceae | 8 |
| Gomesa bifolia | (Sims) M.W.Chase & N.H.Williams | Orchidaceae | 8 |
| Gomesa flexuosa | (G.Lodd.) M.W.Chase & N.H.Williams | Orchidaceae | 8 |
| Gomesa planifolia | (Lindl.) Klotzsch ex Rchb.f. | Orchidaceae | 8 |
| Gomphrena celosioides | Mart. | Amaranthaceae | 8 |
| Gomphrena elegans | Mart. | Amaranthaceae | 8 |
| Gomphrena martiana | Gillies ex Moq. | Amaranthaceae | 8 |
| Gomphrena perennis | L. | Amaranthaceae | 8 |
| Gomphrena pulchella | Mart. | Amaranthaceae | 8 |
| Gonolobus rostratus | (Vahl) Schult. | Apocynaceae | 8 |
| Gouania lupuloides | (L.) Urb. | Rhamnaceae | 8 |
| Grahamia bracteata | Gillies ex Hook. & Arn. | Anacampserotaceae | 8 |
| Gratiola peruviana | L. | Plantaginaceae | 8 |
| Grazielia serrata | (Spreng.) R.M.King & H.Rob. | Asteraceae | 8 |
| Grindelia buphthalmoides | DC. | Asteraceae | 8 |
| Grindelia chiloensis | (Cornel.) Cabrera | Asteraceae | 8 |
| Grindelia pulchella | Dunal | Asteraceae | 8 |
| Grindelia scorzonerifolia | Hook. & Arn. | Asteraceae | 8 |
| Guadua paniculata | Munro | Poaceae | 8 |
| Guadua trinii | (Nees) Rupr. | Poaceae | 8 |
| Guarea guidonia | (L.) Sleumer | Meliaceae | 8 |
| Guazuma ulmifolia | Lam. | Malvaceae | 8 |
| Guettarda uruguensis | Cham. & Schltdl. | Rubiaceae | 8 |
| Guilleminea densa | (Humb. & Bonpl. ex Schult.) Moq. | Amaranthaceae | 8 |
| Gutierrezia gilliesii | Griseb. | Asteraceae | 8 |
| Gymnocalycium gibbosum | (Haw.) Pfeiff. ex Mittler | Cactaceae | 8 |
| Gymnocalycium monvillei | (Lem.) Pfeiff. ex Britton & Rose | Cactaceae | 8 |
| Gymnocoronis spilanthoides | DC. | Asteraceae | 8 |
| Gynerium sagittatum | (Aubl.) P.Beauv. | Poaceae | 8 |
| Habenaria gourlieana | Gillies ex Lindl. | Orchidaceae | 8 |
| Habenaria hexaptera | Lindl. | Orchidaceae | 8 |
| Habenaria repens | Nutt. | Orchidaceae | 8 |
| Habenaria trifida | Kunth | Orchidaceae | 8 |
| Habranthus gracilifolius | Herb. | Amaryllidaceae | 8 |
| Habranthus robustus | Herb. | Amaryllidaceae | 8 |
| Habranthus tubispathus | (L'Hér.) Traub | Amaryllidaceae | 8 |
| Halerpestes cymbalaria | Greene | Ranunculaceae | 8 |
| Hamelia patens | Jacq. | Rubiaceae | 8 |
| Handroanthus albus | (Cham.) Mattos | Bignoniaceae | 8 |
| Handroanthus chrysotrichus | (Mart. ex DC.) Mattos | Bignoniaceae | 8 |
| Handroanthus heptaphyllus | (Vell.) Mattos | Bignoniaceae | 8 |
| Harrisia bonplandii | (Parm. ex Pfeiff.) Britton & Rose | Cactaceae | 8 |
| Harrisia martinii | (Labour.) Britton | Cactaceae | 8 |
| Harrisia pomanensis | (F.A.C.Weber ex K.Schum.) Britton & Rose | Cactaceae | 8 |
| Harrisia tortuosa | (J.Forbes) Britton & Rose | Cactaceae | 8 |
| Heimia salicifolia | Link | Lythraceae | 8 |
| Helanthium bolivianum | (Rusby) Lehtonen & Myllys | Alismataceae | 8 |
| Heliconia farinosa | Raddi | Heliconiaceae | 8 |
| Heliconia hirsuta | L.f. | Heliconiaceae | 8 |
| Heliconia subulata | Ruiz & Pav. | Heliconiaceae | 8 |
| Heliocarpus americanus | L. | Malvaceae | 8 |
| Heliotropium amplexicaule | Vahl | Heliotropiaceae | 8 |
| Heliotropium curassavicum | L. | Heliotropiaceae | 8 |
| Heliotropium elongatum | (Lehm.) Gürke | Heliotropiaceae | 8 |
| Heliotropium indicum | L. | Heliotropiaceae | 8 |
| Heliotropium nicotianifolium | Poir. | Heliotropiaceae | 8 |
| Helosis cayennensis | (Sw.) Spreng. | Balanophoraceae | 8 |
| Hennecartia omphalandra | J.Poiss. | Monimiaceae | 8 |
| Herbertia lahue | (Molina) Goldblatt | Iridaceae | 8 |
| Herissantia crispa | (L.) Brizicky | Malvaceae | 8 |
| Heteranthera limosa | (Sw.) Willd. | Pontederiaceae | 8 |
| Heteranthera reniformis | Ruiz & Pav. | Pontederiaceae | 8 |
| Heteropogon contortus | (L.) P.Beauv. ex Roem. & Schult. | Poaceae | 8 |
| Heteropterys glabra | Hook. & Arn. | Malpighiaceae | 8 |
| Heterosperma ovatifolium | Cav. | Asteraceae | 8 |
| Hibiscus striatus | Cav. | Malvaceae | 8 |
| Hippeastrum petiolatum | Pax | Amaryllidaceae | 8 |
| Hippocratea volubilis | L. | Celastraceae | 8 |
| Hoffmannseggia glauca | (Ortega) Eifert | Fabaceae | 8 |
| Holocheilus hieracioides | (D.Don) Cabrera | Asteraceae | 8 |
| Hyalis argentea | D.Don ex Hook. & Arn. | Asteraceae | 8 |
| Hydrocharis laevigata | (Humb. & Bonpl. ex Willd.) Byng & Christenh. | Hydrocharitaceae | 8 |
| Hydrocleys nymphoides | (Humb. & Bonpl. ex Willd.) Buchenau | Alismataceae | 8 |
| Hydrocotyle bonariensis | Comm. ex Lam. | Araliaceae | 8 |
| Hydrocotyle bowlesioides | Mathias & Constance | Araliaceae | 8 |
| Hydrocotyle leucocephala | Cham. & Schltdl. | Araliaceae | 8 |
| Hydrocotyle ranunculoides | L.f. | Araliaceae | 8 |
| Hydrocotyle verticillata | Thunb. | Araliaceae | 8 |
| Hydrolea spinosa | L. | Hydroleaceae | 8 |
| Hymenachne amplexicaulis | (Rudge) Nees | Poaceae | 8 |
| Hymenoxys anthemoides | Cass. | Asteraceae | 8 |
| Hypericum connatum | Lam. | Hypericaceae | 8 |
| Hypochaeris albiflora | (Kuntze) Azevêdo-Gonç. & Matzenb. | Asteraceae | 8 |
| Hypochaeris chillensis | (Kunth) Britton | Asteraceae | 8 |
| Hypolepis rugosula | (Labill.) J.Sm. | Dennstaedtiaceae | 8 |
| Hypoxis decumbens | L. | Hypoxidaceae | 8 |
| Hyptis alata | (Raf.) Shinners | Lamiaceae | 8 |
| Hyptis brevipes | Poit. | Lamiaceae | 8 |
| Hyptis lappacea | Benth. | Lamiaceae | 8 |
| Hysterionica bakeri | Hicken | Asteraceae | 8 |
| Hysterionica jasionoides | Willd. | Asteraceae | 8 |
| Hysterionica resinosa | (Spreng.) P.L.R.Moraes | Asteraceae | 8 |
| Ibicella lutea | (Lindl.) Van Eselt. | Martyniaceae | 8 |
| Ichnanthus pallens | (Sw.) Munro ex Benth. | Poaceae | 8 |
| Ilex paraguariensis | A.St.-Hil. | Aquifoliaceae | 8 |
| Indigofera suffruticosa | Mill. | Fabaceae | 8 |
| Inga laurina | (Sw.) Willd. | Fabaceae | 8 |
| Inga marginata | Willd. | Fabaceae | 8 |
| Inga uraguensis | Hook. & Arn. | Fabaceae | 8 |
| Ipheion uniflorum | (Graham) Raf. | Amaryllidaceae | 8 |
| Ipomoea alba | L. | Convolvulaceae | 8 |
| Ipomoea amnicola | Morong | Convolvulaceae | 8 |
| Ipomoea aristolochiifolia | G.Don | Convolvulaceae | 8 |
| Ipomoea asarifolia | (Desr.) Roem. & Schult. | Convolvulaceae | 8 |
| Ipomoea carnea | Jacq. | Convolvulaceae | 8 |
| Ipomoea grandifolia | (Dammer) O'Donell | Convolvulaceae | 8 |
| Ipomoea heptaphylla | Sweet | Convolvulaceae | 8 |
| Ipomoea hieronymi | (Kuntze) O'Donell | Convolvulaceae | 8 |
| Ipomoea indica | (Burm.) Merr. | Convolvulaceae | 8 |
| Ipomoea indivisa | (Vell.) Hallier f. | Convolvulaceae | 8 |
| Ipomoea nil | (L.) Roth | Convolvulaceae | 8 |
| Ipomoea platensis | Herb. ex Ker Gawl. | Convolvulaceae | 8 |
| Ipomoea plummerae | A.Gray | Convolvulaceae | 8 |
| Ipomoea purpurea | (L.) Roth | Convolvulaceae | 8 |
| Ipomoea rubriflora | O'Donell | Convolvulaceae | 8 |
| Ipomoea setifera | Poir. | Convolvulaceae | 8 |
| Iresine diffusa | Humb. & Bonpl. ex Willd. | Amaranthaceae | 8 |
| Isochilus linearis | (Jacq.) R.Br. | Orchidaceae | 8 |
| Isolepis cernua | (Vahl) Roem. & Schult. | Cyperaceae | 8 |
| Jaborosa bergii | Hieron. | Solanaceae | 8 |
| Jaborosa integrifolia | Lam. | Solanaceae | 8 |
| Jaborosa runcinata | Lam. | Solanaceae | 8 |
| Jacaranda puberula | Cham. | Bignoniaceae | 8 |
| Jacaratia spinosa | (Aubl.) A.DC. | Caricaceae | 8 |
| Jacquemontia evolvuloides | Meisn. | Convolvulaceae | 8 |
| Jacquemontia tamnifolia | (L.) Griseb. | Convolvulaceae | 8 |
| Jaegeria hirta | (Lag.) Less. | Asteraceae | 8 |
| Janusia guaranitica | (A.St.-Hil.) A.Juss. | Malpighiaceae | 8 |
| Jarava ichu | Ruiz & Pav. | Poaceae | 8 |
| Jatropha curcas | L. | Euphorbiaceae | 8 |
| Jatropha grossidentata | Pax & K.Hoffm. | Euphorbiaceae | 8 |
| Jatropha hippocastanifolia | Croizat | Euphorbiaceae | 8 |
| Jodina rhombifolia | (Hook. & Arn.) Hook. & Arn. ex Reissek | Santalaceae | 8 |
| Juncus acutus | L. | Juncaceae | 8 |
| Juncus biflorus | Elliott | Juncaceae | 8 |
| Juncus bufonius | L. | Juncaceae | 8 |
| Juncus densiflorus | Kunth | Juncaceae | 8 |
| Juncus dichotomus | Elliott | Juncaceae | 8 |
| Juncus imbricatus | Laharpe | Juncaceae | 8 |
| Juncus microcephalus | Kunth | Juncaceae | 8 |
| Junellia crithmifolia | (Gillies & Hook.) N.O'Leary & P.Peralta | Verbenaceae | 8 |
| Junellia seriphioides | (Gillies & Hook.) Moldenke | Verbenaceae | 8 |
| Jungia floribunda | Less. | Asteraceae | 8 |
| Jungia polita | Griseb. | Asteraceae | 8 |
| Justicia brasiliana | Roth | Acanthaceae | 8 |
| Justicia carnea | Lindl. | Acanthaceae | 8 |
| Justicia goudotii | V.A.W.Graham | Acanthaceae | 8 |
| Justicia squarrosa | Griseb. | Acanthaceae | 8 |
| Justicia xylosteoides | Griseb. | Acanthaceae | 8 |
| Kageneckia lanceolata | Ruiz & Pav. | Rosaceae | 8 |
| Kallstroemia tucumanensis | Descole, O'Donell & Lourteig | Zygophyllaceae | 8 |
| Koeleria spicata | (L.) Barberá, Quintanar, Soreng & P.M.Peterson | Poaceae | 8 |
| Krapovickasia flavescens | (Cav.) Fryxell | Malvaceae | 8 |
| Labatia gardneriana | (A.DC.) Alves-Araújo | Sapotaceae | 8 |
| Labatia salicifolia | Mart. | Sapotaceae | 8 |
| Lacistema aggregatum | (P.J.Bergius) Rusby | Lacistemataceae | 8 |
| Laennecia sophiifolia | (Kunth) G.L.Nesom | Asteraceae | 8 |
| Lagascea mollis | Cav. | Asteraceae | 8 |
| Lantana fucata | Lindl. | Verbenaceae | 8 |
| Lantana grisebachii | Stuck. ex Seckt | Verbenaceae | 8 |
| Lantana horrida | Kunth | Verbenaceae | 8 |
| Lantana montevidensis | (Spreng.) Briq. | Verbenaceae | 8 |
| Lantana trifolia | L. | Verbenaceae | 8 |
| Lantana velutina | M.Martens & Galeotti | Verbenaceae | 8 |
| Lappula occidentalis | (S.Watson) Greene | Boraginaceae | 8 |
| Larrea cuneifolia | Cav. | Zygophyllaceae | 8 |
| Larrea divaricata | Cav. | Zygophyllaceae | 8 |
| Larrea nitida | Cav. | Zygophyllaceae | 8 |
| Lasiacis divaricata | (L.) Hitchc. | Poaceae | 8 |
| Lecanophora heterophylla | (Cav.) Krapov. | Malvaceae | 8 |
| Leersia hexandra | Sw. | Poaceae | 8 |
| Lemna aequinoctialis | Welw. | Araceae | 8 |
| Lemna gibba | L. | Araceae | 8 |
| Lemna minuta | Kunth | Araceae | 8 |
| Lepechinia floribunda | (Benth.) Epling | Lamiaceae | 8 |
| Lepechinia meyenii | (Walp.) Epling | Lamiaceae | 8 |
| Lepidium bonariense | L. | Brassicaceae | 8 |
| Lepidium didymum | L. | Brassicaceae | 8 |
| Lepismium cruciforme | (Vell.) Miq. | Cactaceae | 8 |
| Lepismium lumbricoides | (Lem.) Barthlott | Cactaceae | 8 |
| Leptochloa crinita | (Lag.) P.M.Peterson & N.Snow | Poaceae | 8 |
| Leptochloa panicea | (Retz.) Ohwi | Poaceae | 8 |
| Leptochloa pluriflora | (E.Fourn.) P.M.Peterson & N.Snow | Poaceae | 8 |
| Leptoglossis linifolia | (Miers) Benth. & Hook.f. ex Griseb. | Solanaceae | 8 |
| Leptospron adenanthum | (G.Mey.) A.Delgado | Fabaceae | 8 |
| Leptostelma maximum | D.Don | Asteraceae | 8 |
| Lepuropetalon spathulatum | Elliott | Celastraceae | 8 |
| Lessingianthus rubricaulis | (Humb. & Bonpl.) H.Rob. | Asteraceae | 8 |
| Libidibia paraguariensis | (D.Parodi) G.P.Lewis | Fabaceae | 8 |
| Ligaria cuneifolia | (Ruiz & Pav.) Tiegh. | Loranthaceae | 8 |
| Lilaeopsis carolinensis | J.M.Coult. & Rose | Apiaceae | 8 |
| Limnocharis flava | (L.) Buchenau | Alismataceae | 8 |
| Limnocharis laforestii | Duchass. ex Griseb. | Alismataceae | 8 |
| Limonium brasiliense | (Boiss.) Kuntze | Plumbaginaceae | 8 |
| Limosella australis | R.Br. | Plantaginaceae | 8 |
| Lindernia dubia | (L.) Pennell | Linderniaceae | 8 |
| Lippia alba | (Mill.) N.E.Br. ex Britton & P.Wilson | Verbenaceae | 8 |
| Lippia junelliana | (Moldenke) Tronc. | Verbenaceae | 8 |
| Lippia lupulina | Cham. | Verbenaceae | 8 |
| Lippia turbinata | Griseb. | Verbenaceae | 8 |
| Lithraea brasiliensis | Marchand | Anacardiaceae | 8 |
| Lithraea molleoides | (Vell.) Engl. | Anacardiaceae | 8 |
| Lobelia nana | Kunth | Campanulaceae | 8 |
| Lobelia oligophylla | (Wedd.) Lammers | Campanulaceae | 8 |
| Lomariocycas tabularis | (Thunb.) Gasper & A.R.Sm. | Blechnaceae | 8 |
| Lucilia acutifolia | (Poir.) Cass. | Asteraceae | 8 |
| Ludwigia bonariensis | (Micheli) H.Hara | Onagraceae | 8 |
| Ludwigia decurrens | Walter | Onagraceae | 8 |
| Ludwigia elegans | (Cambess.) H.Hara | Onagraceae | 8 |
| Ludwigia grandiflora | (Michx.) Greuter & Burdet | Onagraceae | 8 |
| Ludwigia hexapetala | (Hook. & Arn.) Zardini, H.Y.Gu & P.H.Raven | Onagraceae | 8 |
| Ludwigia leptocarpa | (Nutt.) H.Hara | Onagraceae | 8 |
| Ludwigia longifolia | (DC.) H.Hara | Onagraceae | 8 |
| Ludwigia major | (Micheli) Ramamoorthy | Onagraceae | 8 |
| Ludwigia octovalvis | (Jacq.) P.H.Raven | Onagraceae | 8 |
| Ludwigia peploides | (Kunth) P.H.Raven | Onagraceae | 8 |
| Ludwigia peruviana | (L.) H.Hara | Onagraceae | 8 |
| Ludwigia sericea | (Cambess.) H.Hara | Onagraceae | 8 |
| Luehea divaricata | Mart. | Malvaceae | 8 |
| Lupinus albescens | Hook. & Arn. | Fabaceae | 8 |
| Lupinus bracteolaris | Desr. | Fabaceae | 8 |
| Lupinus multiflorus | Desr. | Fabaceae | 8 |
| Luzula multiflora | (Ehrh.) Lej. | Juncaceae | 8 |
| Lycianthes rantonnetii | (Carrière) Bitter | Solanaceae | 8 |
| Lycium americanum | Jacq. | Solanaceae | 8 |
| Lycium boerhaviifolium | L.f. | Solanaceae | 8 |
| Lycium cestroides | Schltdl. | Solanaceae | 8 |
| Lycium chilense | Bertero | Solanaceae | 8 |
| Lycium ciliatum | Schltdl. | Solanaceae | 8 |
| Lycium infaustum | Miers | Solanaceae | 8 |
| Lycium tenuispinosum | Miers | Solanaceae | 8 |
| Lycium vimineum | Miers | Solanaceae | 8 |
| Lycopodiella alopecuroides | (L.) Cranfill | Lycopodiaceae | 8 |
| Lysimachia minima | (L.) U.Manns & Anderb. | Primulaceae | 8 |
| Lythrum maritimum | Kunth | Lythraceae | 8 |
| Machaerium hirtum | (Vell.) Stellfeld | Fabaceae | 8 |
| Maclura tinctoria | (L.) D.Don ex G.Don | Moraceae | 8 |
| Macroptilium bracteatum | (Nees & Mart.) Maréchal & Baudet | Fabaceae | 8 |
| Macroptilium lathyroides | (L.) Urb. | Fabaceae | 8 |
| Macroptilium prostratum | (Benth.) Urb. | Fabaceae | 8 |
| Maihueniopsis hickenii | (Britton & Rose) D.R.Hunt | Cactaceae | 8 |
| Malvastrum americanum | (L.) Torr. | Malvaceae | 8 |
| Malvastrum coromandelianum | (L.) Garcke | Malvaceae | 8 |
| Malvella leprosa | (Ortega) Krapov. | Malvaceae | 8 |
| Mandevilla coccinea | Woodson | Apocynaceae | 8 |
| Mandevilla laxa | (Ruiz & Pav.) Woodson | Apocynaceae | 8 |
| Mandevilla pentlandiana | Woodson | Apocynaceae | 8 |
| Mandevilla petraea | (A.St.-Hil.) Pichon | Apocynaceae | 8 |
| Manettia cordifolia | Mart. | Rubiaceae | 8 |
| Manihot grahamii | Hook. | Euphorbiaceae | 8 |
| Margaritaria nobilis | L.f. | Phyllanthaceae | 8 |
| Margyricarpus pinnatus | (Lam.) Kuntze | Rosaceae | 8 |
| Marsypianthes chamaedrys | (Vahl) Kuntze | Lamiaceae | 8 |
| Mayaca fluviatilis | Aubl. | Mayacaceae | 8 |
| Mayaca sellowiana | Kunth | Mayacaceae | 8 |
| Maytenus boaria | Molina | Celastraceae | 8 |
| Maytenus ilicifolia | Mart. ex Reissek | Celastraceae | 8 |
| Maytenus spinosa | (Griseb.) Lourteig & O'Donell | Celastraceae | 8 |
| Maytenus vitis-idaea | Griseb. | Celastraceae | 8 |
| Mecardonia procumbens | (Mill.) Small | Plantaginaceae | 8 |
| Melanthera latifolia | (Gardner) Cabrera | Asteraceae | 8 |
| Melica macra | Nees | Poaceae | 8 |
| Melochia pyramidata | L. | Malvaceae | 8 |
| Melothria pendula | L. | Cucurbitaceae | 8 |
| Meniscium serratum | Cav. | Thelypteridaceae | 8 |
| Menodora integrifolia | (Cham. & Schltdl.) Steud. | Oleaceae | 8 |
| Mentzelia albescens | (Gillies ex Arn.) Benth. & Hook.f. ex Griseb. | Loasaceae | 8 |
| Mentzelia parvifolia | Urb. & Gilg ex Kurtz | Loasaceae | 8 |
| Mentzelia scabra | Kunth | Loasaceae | 8 |
| Mesechites trifidus | (Jacq.) Müll.Arg. | Apocynaceae | 8 |
| Miconia australis | (Cham.) R.Goldenb. | Melastomataceae | 8 |
| Miconia calvescens | DC. | Melastomataceae | 8 |
| Miconia chamissois | Naudin | Melastomataceae | 8 |
| Miconia crenata | (Vahl) Michelang. | Melastomataceae | 8 |
| Micranthemum umbrosum | (J.F.Gmel.) S.F.Blake | Linderniaceae | 8 |
| Microgramma mortoniana | de la Sota | Polypodiaceae | 8 |
| Microgramma squamulosa | (Kaulf.) de la Sota | Polypodiaceae | 8 |
| Microlobius foetidus | (Jacq.) M.Sousa & G.Andrade | Fabaceae | 8 |
| Microstachys corniculata | (Vahl) A.Juss. ex Griseb. | Euphorbiaceae | 8 |
| Microsteris gracilis | (Hook.) Greene | Polemoniaceae | 8 |
| Mikania cordifolia | (L.f.) Willd. | Asteraceae | 8 |
| Mikania micrantha | Kunth | Asteraceae | 8 |
| Mikania periplocifolia | Hook. & Arn. | Asteraceae | 8 |
| Miltonia flavescens | (Lindl.) Lindl. | Orchidaceae | 8 |
| Mimosa bimucronata | (DC.) Kuntze | Fabaceae | 8 |
| Mimosa candollei | R.Grether | Fabaceae | 8 |
| Mimosa diplotricha | C.Wright | Fabaceae | 8 |
| Mimosa flagellaris | Benth. | Fabaceae | 8 |
| Mimosa pigra | L. | Fabaceae | 8 |
| Mimosa strigillosa | Torr. & A.Gray | Fabaceae | 8 |
| Mimosa tweedieana | Barneby ex Glazier & Mackinder | Fabaceae | 8 |
| Mimosa velloziana | Mart. | Fabaceae | 8 |
| Mionandra argentea | Griseb. | Malpighiaceae | 8 |
| Mirabilis ovata | F.Meigen | Nyctaginaceae | 8 |
| Mitracarpus hirtus | (L.) DC. | Rubiaceae | 8 |
| Modiola caroliniana | (L.) G.Don | Malvaceae | 8 |
| Modiolastrum gilliesii | (Steud.) Krapov. | Malvaceae | 8 |
| Modiolastrum malvifolium | (Griseb.) K.Schum. | Malvaceae | 8 |
| Mollugo verticillata | L. | Molluginaceae | 8 |
| Monnina dictyocarpa | Griseb. | Polygalaceae | 8 |
| Monttea aphylla | (Miers) Hauman | Plantaginaceae | 8 |
| Monttea schickendantzii | Griseb. | Plantaginaceae | 8 |
| Morisonia atamisquea | (Kuntze) Christenh. & Byng | Capparaceae | 8 |
| Morisonia flexuosa | L. | Capparaceae | 8 |
| Morisonia speciosa | (Griseb.) Christenh. & Byng | Capparaceae | 8 |
| Morisonia tweedieana | (Eichler) Christenh. & Byng | Capparaceae | 8 |
| Mucuna sloanei | Fawc. & Rendle | Fabaceae | 8 |
| Muehlenbeckia sagittifolia | (Ortega) Meisn. | Polygonaceae | 8 |
| Muhlenbergia alopecuroides | (Griseb.) P.M.Peterson & Columbus | Poaceae | 8 |
| Muhlenbergia asperifolia | (Nees & Meyen ex Trin.) Parodi | Poaceae | 8 |
| Muhlenbergia paniculata | (Nutt.) P.M.Peterson | Poaceae | 8 |
| Muhlenbergia peruviana | (P.Beauv.) Steud. | Poaceae | 8 |
| Muhlenbergia schreberi | J.F.Gmel. | Poaceae | 8 |
| Muhlenbergia torreyi | (Kunth) Hitchc. ex Bush | Poaceae | 8 |
| Mulguraea aspera | (Gillies & Hook.) N.O'Leary & P.Peralta | Verbenaceae | 8 |
| Mutisia coccinea | A.St.-Hil. | Asteraceae | 8 |
| Myrceugenia glaucescens | (Cambess.) D.Legrand & Kausel | Myrtaceae | 8 |
| Myrcia palustris | DC. | Myrtaceae | 8 |
| Myrcia selloi | (Spreng.) N.Silveira | Myrtaceae | 8 |
| Myrcia splendens | (Sw.) DC. | Myrtaceae | 8 |
| Myrcianthes cisplatensis | (Cambess.) O.Berg | Myrtaceae | 8 |
| Myrcianthes pungens | (O.Berg) D.Legrand | Myrtaceae | 8 |
| Myriophyllum aquaticum | (Vell.) Verdc. | Haloragaceae | 8 |
| Myriophyllum quitense | Kunth | Haloragaceae | 8 |
| Myriopteris aurea | (Poir.) Grusz & Windham | Pteridaceae | 8 |
| Myriopteris myriophylla | J.Sm. | Pteridaceae | 8 |
| Myriopus rubicundus | (Salzm. ex DC.) Luebert | Heliotropiaceae | 8 |
| Myriopus salzmannii | (DC.) Diane & Hilger | Heliotropiaceae | 8 |
| Myrrhinium atropurpureum | Schott | Myrtaceae | 8 |
| Myrsine coriacea | (Sw.) R.Br. ex Roem. & Schult. | Primulaceae | 8 |
| Myrsine laetevirens | (Mez) Arechav. | Primulaceae | 8 |
| Myrsine lorentziana | (Mez) Arechav. | Primulaceae | 8 |
| Najas guadalupensis | (Spreng.) Magnus | Hydrocharitaceae | 8 |
| Najas marina | L. | Hydrocharitaceae | 8 |
| Nama jamaicensis | L. | Namaceae | 8 |
| Nanogalactia heterophylla | (Gillies ex Hook.) L.P.Queiroz | Fabaceae | 8 |
| Nassella neesiana | (Trin. & Rupr.) Barkworth | Poaceae | 8 |
| Nassella tenuissima | (Trin.) Barkworth | Poaceae | 8 |
| Nassella trichotoma | (Nees) Hack. & Arechav. | Poaceae | 8 |
| Nectandra angustifolia | (Schrad.) Nees & Mart. | Lauraceae | 8 |
| Neja pinifolia | (Poir.) G.L.Nesom | Asteraceae | 8 |
| Neltuma affinis | (Spreng.) C.E.Hughes & G.P.Lewis | Fabaceae | 8 |
| Neltuma alba | (Griseb.) C.E.Hughes & G.P.Lewis | Fabaceae | 8 |
| Neltuma alpataco | (Phil.) C.E.Hughes & G.P.Lewis | Fabaceae | 8 |
| Neltuma caldenia | (Burkart) C.E.Hughes & G.P.Lewis | Fabaceae | 8 |
| Neltuma chilensis | (Molina) C.E.Hughes & G.P.Lewis | Fabaceae | 8 |
| Neltuma flexuosa | (DC.) C.E.Hughes & G.P.Lewis | Fabaceae | 8 |
| Neltuma kuntzei | (Harms) C.E.Hughes & G.P.Lewis | Fabaceae | 8 |
| Neltuma nigra | (Griseb.) C.E.Hughes & G.P.Lewis | Fabaceae | 8 |
| Neltuma ruscifolia | (Griseb.) C.E.Hughes & G.P.Lewis | Fabaceae | 8 |
| Neltuma sericantha | (Gillies ex Hook.) C.E.Hughes & G.P.Lewis | Fabaceae | 8 |
| Neoblechnum brasiliense | (Desv.) Gasper & V.A.O.Dittrich | Blechnaceae | 8 |
| Nephrolepis biserrata | (Sw.) Schott | Nephrolepidaceae | 8 |
| Neptunia pubescens | Benth. | Fabaceae | 8 |
| Nicotiana alata | Link & Otto | Solanaceae | 8 |
| Nicotiana glauca | Graham | Solanaceae | 8 |
| Nicotiana longiflora | Cav. | Solanaceae | 8 |
| Nicotiana noctiflora | Hook. | Solanaceae | 8 |
| Nierembergia aristata | D.Don | Solanaceae | 8 |
| Nierembergia calycina | Hook. | Solanaceae | 8 |
| Nierembergia linariifolia | Graham | Solanaceae | 8 |
| Nierembergia rigida | Miers | Solanaceae | 8 |
| Nierembergia rivularis | Miers | Solanaceae | 8 |
| Niphidium crassifolium | (L.) Lellinger | Polypodiaceae | 8 |
| Nissolia fruticosa | Jacq. | Fabaceae | 8 |
| Nothoscordum bivalve | (L.) Britton | Amaryllidaceae | 8 |
| Nothoscordum gracile | (Aiton) Stearn | Amaryllidaceae | 8 |
| Noticastrum acuminatum | (DC.) Cuatrec. | Asteraceae | 8 |
| Noticastrum diffusum | (Pers.) Cabrera | Asteraceae | 8 |
| Noticastrum marginatum | (Kunth) Cuatrec. | Asteraceae | 8 |
| Nuttallanthus canadensis | (L.) D.A.Sutton | Plantaginaceae | 8 |
| Nymphoides humboldtiana | (Kunth) Kuntze | Menyanthaceae | 8 |
| Ocimum campechianum | Mill. | Lamiaceae | 8 |
| Ocimum carnosum | (Spreng.) Link & Otto ex Benth. | Lamiaceae | 8 |
| Ocotea acutifolia | (Nees) Mez | Lauraceae | 8 |
| Ocotea puberula | (Rich.) Nees | Lauraceae | 8 |
| Oenothera affinis | Cambess. | Onagraceae | 8 |
| Oenothera centaureifolia | Steud. | Onagraceae | 8 |
| Oenothera indecora | Cambess. | Onagraceae | 8 |
| Oenothera mollissima | L. | Onagraceae | 8 |
| Oenothera odorata | Jacq. | Onagraceae | 8 |
| Oenothera rosea | Aiton | Onagraceae | 8 |
| Olsynium junceum | (E.Mey. ex C.Presl) Goldblatt | Iridaceae | 8 |
| Ophioglossum crotalophoroides | Walter | Ophioglossaceae | 8 |
| Oplismenus compositus | (L.) P.Beauv. | Poaceae | 8 |
| Oplismenus hirtellus | (L.) P.Beauv. | Poaceae | 8 |
| Opuntia arechavaletae | Speg. | Cactaceae | 8 |
| Opuntia aurantiaca | Lindl. | Cactaceae | 8 |
| Opuntia bonaerensis | Speg. | Cactaceae | 8 |
| Opuntia elata | Link & Otto ex Salm-Dyck | Cactaceae | 8 |
| Opuntia megapotamica | Arechav. | Cactaceae | 8 |
| Opuntia quimilo | K.Schum. | Cactaceae | 8 |
| Opuntia retrorsa | Speg. | Cactaceae | 8 |
| Opuntia sulphurea | Gillies ex Salm-Dyck | Cactaceae | 8 |
| Orobanche chilensis | (Phil.) Beck | Orobanchaceae | 8 |
| Orthosia scoparia | (Nutt.) Liede & Meve | Apocynaceae | 8 |
| Orthosia virgata | (Poir.) E.Fourn. | Apocynaceae | 8 |
| Osmunda spectabilis | Willd. | Osmundaceae | 8 |
| Osmundastrum cinnamomeum | (L.) C.Presl | Osmundaceae | 8 |
| Oxalis articulata | Savigny | Oxalidaceae | 8 |
| Oxalis brasiliensis | G.Lodd. ex Drapiez | Oxalidaceae | 8 |
| Oxalis conorrhiza | Jacq. | Oxalidaceae | 8 |
| Oxalis frutescens | L. | Oxalidaceae | 8 |
| Oxalis hispidula | Zucc. | Oxalidaceae | 8 |
| Oxalis niederleinii | R.Knuth | Oxalidaceae | 8 |
| Oxalis perdicaria | (Molina) Bertero | Oxalidaceae | 8 |
| Oxalis sellowiana | Zucc. | Oxalidaceae | 8 |
| Oxalis triangularis | A.St.-Hil. | Oxalidaceae | 8 |
| Oxypetalum arnottianum | H.Buek | Apocynaceae | 8 |
| Oxypetalum coccineum | Griseb. | Apocynaceae | 8 |
| Oxypetalum solanoides | Hook. & Arn. | Apocynaceae | 8 |
| Pachystachys dubiosa | (Lindau) A.L.A.Côrtes | Acanthaceae | 8 |
| Pacourina edulis | Aubl. | Asteraceae | 8 |
| Palhinhaea cernua | (L.) Vasc. & Franco | Lycopodiaceae | 8 |
| Palicourea crocea | (Sw.) Schult. | Rubiaceae | 8 |
| Palicourea deflexa | (DC.) Borhidi | Rubiaceae | 8 |
| Palicourea leiocarpa | (Cham. & Schltdl.) Delprete | Rubiaceae | 8 |
| Palicourea tomentosa | (Aubl.) Borhidi | Rubiaceae | 8 |
| Panicum dichotomiflorum | Michx. | Poaceae | 8 |
| Panicum racemosum | (P.Beauv.) Spreng. | Poaceae | 8 |
| Pappophorum mucronulatum | Nees | Poaceae | 8 |
| Pappophorum pappiferum | (Lam.) Kuntze | Poaceae | 8 |
| Pappophorum philippianum | Parodi | Poaceae | 8 |
| Pappostipa speciosa | (Trin. & Rupr.) Romasch. | Poaceae | 8 |
| Parablechnum chilense | (Kaulf.) Gasper & Salino | Blechnaceae | 8 |
| Parapiptadenia rigida | (Benth.) Brenan | Fabaceae | 8 |
| Parasenegalia visco | (Lorentz ex Griseb.) Seigler & Ebinger | Fabaceae | 8 |
| Parietaria floridana | Nutt. | Urticaceae | 8 |
| Parkinsonia aculeata | L. | Fabaceae | 8 |
| Parkinsonia praecox | (Ruiz & Pav.) Hawkins | Fabaceae | 8 |
| Parodia mammulosa | (Lem.) N.P.Taylor | Cactaceae | 8 |
| Parodia ottonis | (Lehm.) N.P.Taylor | Cactaceae | 8 |
| Parthenium hysterophorus | L. | Asteraceae | 8 |
| Paspalum acuminatum | Raddi | Poaceae | 8 |
| Paspalum conjugatum | P.J.Bergius | Poaceae | 8 |
| Paspalum denticulatum | Trin. | Poaceae | 8 |
| Paspalum dilatatum | Poir. | Poaceae | 8 |
| Paspalum distichum | L. | Poaceae | 8 |
| Paspalum mandiocanum | Trin. | Poaceae | 8 |
| Paspalum notatum | Flüggé | Poaceae | 8 |
| Paspalum paniculatum | L. | Poaceae | 8 |
| Paspalum plicatulum | Michx. | Poaceae | 8 |
| Paspalum quadrifarium | Lam. | Poaceae | 8 |
| Paspalum repens | P.J.Bergius | Poaceae | 8 |
| Paspalum urvillei | Steud. | Poaceae | 8 |
| Paspalum vaginatum | Sw. | Poaceae | 8 |
| Passiflora alata | Curtis | Passifloraceae | 8 |
| Passiflora amethystina | J.C.Mikan | Passifloraceae | 8 |
| Passiflora caerulea | L. | Passifloraceae | 8 |
| Passiflora capsularis | L. | Passifloraceae | 8 |
| Passiflora cincinnata | Mast. | Passifloraceae | 8 |
| Passiflora edulis | Sims | Passifloraceae | 8 |
| Passiflora foetida | L. | Passifloraceae | 8 |
| Passiflora misera | Kunth | Passifloraceae | 8 |
| Passiflora mooreana | Hook.f. | Passifloraceae | 8 |
| Passiflora morifolia | Mast. | Passifloraceae | 8 |
| Passiflora suberosa | L. | Passifloraceae | 8 |
| Passiflora tucumanensis | Hook. | Passifloraceae | 8 |
| Paullinia pinnata | L. | Sapindaceae | 8 |
| Pavonia angustipetala | Krapov. | Malvaceae | 8 |
| Pavonia aurigloba | Krapov. | Malvaceae | 8 |
| Pavonia cymbalaria | A.St.-Hil. & Naudin | Malvaceae | 8 |
| Pavonia hastata | Cav. | Malvaceae | 8 |
| Pavonia sepium | A.St.-Hil. | Malvaceae | 8 |
| Pectis odorata | Griseb. | Asteraceae | 8 |
| Pectocarya linearis | (Ruiz & Pav.) DC. | Boraginaceae | 8 |
| Pellaea ternifolia | (Cav.) Link | Pteridaceae | 8 |
| Peltophorum dubium | (Spreng.) Taub. | Fabaceae | 8 |
| Peperomia catharinae | Miq. | Piperaceae | 8 |
| Peperomia increscens | Miq. | Piperaceae | 8 |
| Peperomia rotundifolia | (L.) Kunth | Piperaceae | 8 |
| Peperomia tetraphylla | (G.Forst.) Hook. & Arn. | Piperaceae | 8 |
| Peperomia urocarpa | Fisch. & C.A.Mey. | Piperaceae | 8 |
| Pereskia aculeata | Mill. | Cactaceae | 8 |
| Pereskia sacharosa | Griseb. | Cactaceae | 8 |
| Perezia multiflora | (Bonpl.) Less. | Asteraceae | 8 |
| Perezia recurvata | Less. | Asteraceae | 8 |
| Persicaria acuminata | (Kunth) M.Gómez | Polygonaceae | 8 |
| Persicaria glabra | (Willd.) M.Gómez | Polygonaceae | 8 |
| Persicaria hydropiperoides | (Michx.) Small | Polygonaceae | 8 |
| Persicaria punctata | Small | Polygonaceae | 8 |
| Persicaria setacea | Small | Polygonaceae | 8 |
| Petiveria alliacea | L. | Petiveriaceae | 8 |
| Petunia axillaris | (Lam.) Britton, Sterns & Poggenb. | Solanaceae | 8 |
| Petunia integrifolia | (Hook.) Schinz & Thell. | Solanaceae | 8 |
| Pfaffia glomerata | (Spreng.) Pedersen | Amaranthaceae | 8 |
| Pfaffia gnaphalioides | (L.f.) Mart. | Amaranthaceae | 8 |
| Pfaffia tuberosa | (Spreng.) Hicken | Amaranthaceae | 8 |
| Phacelia brachyantha | Benth. | Hydrophyllaceae | 8 |
| Phacelia pinnatifida | Griseb. ex Wedd. | Hydrophyllaceae | 8 |
| Phacelia secunda | J.F.Gmel. | Hydrophyllaceae | 8 |
| Phalocallis coelestis | (Lehm.) Ravenna | Iridaceae | 8 |
| Pharus lappulaceus | Aubl. | Poaceae | 8 |
| Phaseolus vulgaris | L. | Fabaceae | 8 |
| Phenax hirtus | (Sw.) Wedd. | Urticaceae | 8 |
| Philibertia gilliesii | Hook. & Arn. | Apocynaceae | 8 |
| Philodendron bipinnatifidum | Schott ex Endl. | Araceae | 8 |
| Philodendron undulatum | Engl. | Araceae | 8 |
| Phlebodium aureum | (L.) J.Sm. | Polypodiaceae | 8 |
| Phlebodium pseudoaureum | (Cav.) Lellinger | Polypodiaceae | 8 |
| Phleum alpinum | L. | Poaceae | 8 |
| Phoradendron bathyoryctum | Eichler | Santalaceae | 8 |
| Phoradendron piperoides | (Kunth) Trel. | Santalaceae | 8 |
| Phragmites australis | (Cav.) Steud. | Poaceae | 8 |
| Phyla nodiflora | (L.) Greene | Verbenaceae | 8 |
| Phyllanthus amarus | Schumach. & Thonn. | Phyllanthaceae | 8 |
| Phyllanthus caroliniensis | Walter | Phyllanthaceae | 8 |
| Phyllanthus niruri | L. | Phyllanthaceae | 8 |
| Phyllanthus sellowianus | (Klotzsch) Müll.Arg. | Phyllanthaceae | 8 |
| Physalis angulata | L. | Solanaceae | 8 |
| Physalis pubescens | L. | Solanaceae | 8 |
| Physalis viscosa | L. | Solanaceae | 8 |
| Phytolacca bogotensis | Kunth | Phytolaccaceae | 8 |
| Phytolacca dioica | L. | Phytolaccaceae | 8 |
| Phytolacca thyrsiflora | Fenzl ex J.A.Schmidt | Phytolaccaceae | 8 |
| Picrosia longifolia | D.Don | Asteraceae | 8 |
| Pilularia americana | A.Br. | Marsileaceae | 8 |
| Pinnasa bergii | (Hieron.) Weigend & R.H.Acuña | Loasaceae | 8 |
| Piper aduncum | L. | Piperaceae | 8 |
| Piper amalago | L. | Piperaceae | 8 |
| Piper hispidum | Sw. | Piperaceae | 8 |
| Piriqueta cistoides | (L.) Griseb. | Passifloraceae | 8 |
| Pisonia aculeata | L. | Nyctaginaceae | 8 |
| Pistia stratiotes | L. | Araceae | 8 |
| Pitraea cuneato-ovata | (Cav.) Caro | Verbenaceae | 8 |
| Pityrogramma austroamericana | Domin | Pteridaceae | 8 |
| Pityrogramma calomelanos | (L.) Link | Pteridaceae | 8 |
| Pityrogramma trifoliata | (L.) R.M.Tryon | Pteridaceae | 8 |
| Plantago australis | Lam. | Plantaginaceae | 8 |
| Plantago heterophylla | Nutt. | Plantaginaceae | 8 |
| Plantago patagonica | Jacq. | Plantaginaceae | 8 |
| Plantago tomentosa | Lam. | Plantaginaceae | 8 |
| Pleopeltis hirsutissima | (Raddi) de la Sota | Polypodiaceae | 8 |
| Pleopeltis macrocarpa | (Bory ex Willd.) Kaulf. | Polypodiaceae | 8 |
| Pleopeltis minima | (Bory) J.Prado & R.Y.Hirai | Polypodiaceae | 8 |
| Pleopeltis pleopeltifolia | (Raddi) Alston | Polypodiaceae | 8 |
| Pluchea sagittalis | (Lam.) Cabrera | Asteraceae | 8 |
| Plumbago caerulea | Kunth | Plumbaginaceae | 8 |
| Podocarpus lambertii | Klotzsch ex Endl. | Podocarpaceae | 8 |
| Podocoma hieraciifolia | (Poir.) Cass. | Asteraceae | 8 |
| Poikilacanthus glandulosus | (Nees) Ariza | Acanthaceae | 8 |
| Poikilacanthus tweedieanus | (Nees) Lindau | Acanthaceae | 8 |
| Poiretia latifolia | Vogel | Fabaceae | 8 |
| Polycarpaea corymbosa | (L.) Lam. | Caryophyllaceae | 8 |
| Polycarpon tetraphyllum | (L.) L. | Caryophyllaceae | 8 |
| Polylepis australis | Bitter | Rosaceae | 8 |
| Polypogon interruptus | Kunth | Poaceae | 8 |
| Polystachya foliosa | (Hook.) Rchb.f. | Orchidaceae | 8 |
| Polystichum plicatum | Hicken ex Hosseus | Dryopteridaceae | 8 |
| Pombalia bigibbosa | (A.St.-Hil.) Paula-Souza | Violaceae | 8 |
| Pombalia calceolaria | (L.) Paula-Souza | Violaceae | 8 |
| Pombalia communis | (A.St.-Hil.) Paula-Souza | Violaceae | 8 |
| Pombalia parviflora | (L.f.) Paula-Souza | Violaceae | 8 |
| Pontederia azurea | Sw. | Pontederiaceae | 8 |
| Pontederia cordata | L. | Pontederiaceae | 8 |
| Pontederia crassipes | Mart. | Pontederiaceae | 8 |
| Pontederia rotundifolia | L.f. | Pontederiaceae | 8 |
| Porophyllum ruderale | (Jacq.) Cass. | Asteraceae | 8 |
| Portulaca amilis | Speg. | Portulacaceae | 8 |
| Portulaca cryptopetala | Speg. | Portulacaceae | 8 |
| Portulaca gilliesii | Hook. | Portulacaceae | 8 |
| Portulaca grandiflora | Hook. | Portulacaceae | 8 |
| Portulaca obtusa | Poelln. | Portulacaceae | 8 |
| Portulaca umbraticola | Kunth | Portulacaceae | 8 |
| Potamogeton illinoensis | Morong | Potamogetonaceae | 8 |
| Potamogeton pusillus | L. | Potamogetonaceae | 8 |
| Praecereus euchlorus | (F.A.C.Weber ex K.Schum.) N.P.Taylor | Cactaceae | 8 |
| Praxelis clematidea | R.M.King & H.Rob. | Asteraceae | 8 |
| Prescottia stachyodes | (Sw.) Lindl. | Orchidaceae | 8 |
| Pristimera celastroides | (Kunth) A.C.Sm. | Celastraceae | 8 |
| Prosopanche americana | (R.Br.) Baill. | Aristolochiaceae | 8 |
| Proustia cuneifolia | D.Don | Asteraceae | 8 |
| Pseudalbizzia inundata | (Mart.) E.J.M.Koenen & Duno | Fabaceae | 8 |
| Pseudognaphalium gaudichaudianum | (DC.) Anderb. | Asteraceae | 8 |
| Pseudogynoxys cabrerae | H.Rob. & Cuatrec. | Asteraceae | 8 |
| Psidium grandifolium | Mart. ex DC. | Myrtaceae | 8 |
| Psidium guineense | Sw. | Myrtaceae | 8 |
| Psidium salutare | (Kunth) O.Berg | Myrtaceae | 8 |
| Psilotum nudum | (L.) P.Beauv. | Psilotaceae | 8 |
| Psychotria carthagenensis | Jacq. | Rubiaceae | 8 |
| Psychotria suterella | Müll.Arg. | Rubiaceae | 8 |
| Pteridium esculentum | (G.Forst.) Cockayne | Dennstaedtiaceae | 8 |
| Pteris deflexa | Link | Pteridaceae | 8 |
| Pterocactus tuberosus | (Pfeiff.) Britton & Rose | Cactaceae | 8 |
| Pterocaulon balansae | Chodat | Asteraceae | 8 |
| Pterocaulon lorentzii | Malme | Asteraceae | 8 |
| Pterocaulon polystachyum | DC. | Asteraceae | 8 |
| Pterocaulon virgatum | (L.) DC. | Asteraceae | 8 |
| Pterogyne nitens | Tul. | Fabaceae | 8 |
| Puya spathacea | (Griseb.) Mez | Bromeliaceae | 8 |
| Pyrostegia venusta | (Ker Gawl.) Miers | Bignoniaceae | 8 |
| Quechuapteris pruinata | (Kaulf.) Windham | Pteridaceae | 8 |
| Quiabentia verticillata | (Vaupel) Vaupel ex A.Berger | Cactaceae | 8 |
| Quillaja lancifolia | D.Don | Quillajaceae | 8 |
| Ranunculus apiifolius | Pers. | Ranunculaceae | 8 |
| Ranunculus platensis | Spreng. | Ranunculaceae | 8 |
| Rhipsalis baccifera | (Sol. ex J.S.Muell.) Stearn | Cactaceae | 8 |
| Rhipsalis floccosa | Salm-Dyck ex Pfeiff. | Cactaceae | 8 |
| Rhynchosia edulis | Griseb. | Fabaceae | 8 |
| Rhynchosia minima | (L.) DC. | Fabaceae | 8 |
| Rhynchosia senna | Gillies ex Hook. & Arn. | Fabaceae | 8 |
| Rhynchosida physocalyx | (A.Gray) Fryxell | Malvaceae | 8 |
| Rhynchospora barrosiana | Guagl. | Cyperaceae | 8 |
| Rhynchospora corymbosa | (L.) Britton | Cyperaceae | 8 |
| Rhynchospora holoschoenoides | (Rich.) Herter | Cyperaceae | 8 |
| Rhynchospora nervosa | (Vahl) Boeckeler | Cyperaceae | 8 |
| Richardia brasiliensis | Gomes | Rubiaceae | 8 |
| Richardia grandiflora | (Cham. & Schltdl.) Steud. | Rubiaceae | 8 |
| Richardia humistrata | (Cham. & Schltdl.) Steud. | Rubiaceae | 8 |
| Richardia stellaris | (Cham. & Schltdl.) Steud. | Rubiaceae | 8 |
| Rivina humilis | L. | Petiveriaceae | 8 |
| Rotala ramosior | (L.) Koehne | Lythraceae | 8 |
| Rubus sellowii | Cham. & Schltdl. | Rosaceae | 8 |
| Ruellia angustiflora | (Nees) Lindau ex Rambo | Acanthaceae | 8 |
| Ruellia brevifolia | (Pohl) C.Ezcurra | Acanthaceae | 8 |
| Ruellia ciliatiflora | Hook. | Acanthaceae | 8 |
| Ruellia erythropus | (Nees) Lindau | Acanthaceae | 8 |
| Ruellia macrosolen | Lillo ex C.Ezcurra | Acanthaceae | 8 |
| Ruellia morongii | Britton | Acanthaceae | 8 |
| Ruellia simplex | C.Wright | Acanthaceae | 8 |
| Rumex maritimus | L. | Polygonaceae | 8 |
| Rumohra adiantiformis | (G.Forst.) Ching | Dryopteridaceae | 8 |
| Ruppia cirrhosa | (Petagna) Grande | Ruppiaceae | 8 |
| Ruppia maritima | L. | Ruppiaceae | 8 |
| Ruprechtia apetala | Wedd. | Polygonaceae | 8 |
| Ruprechtia salicifolia | (Cham. & Schltdl.) C.A.Mey. | Polygonaceae | 8 |
| Sabdariffa furcellata | (Desr.) M.M.Hanes & R.L.Barrett | Malvaceae | 8 |
| Saccharum angustifolium | (Nees) Trin. | Poaceae | 8 |
| Sacoila lanceolata | (Aubl.) Garay | Orchidaceae | 8 |
| Sagittaria montevidensis | Cham. & Schltdl. | Alismataceae | 8 |
| Salicornia perennis | Mill. | Chenopodiaceae | 8 |
| Salix humboldtiana | Willd. | Salicaceae | 8 |
| Salmonopuntia salmiana | (Pfeiff.) P.V.Heath | Cactaceae | 8 |
| Salpichroa origanifolia | (Lam.) Baill. | Solanaceae | 8 |
| Salta triflora | (Griseb.) Adr.Sanchez | Polygonaceae | 8 |
| Salvia coccinea | Buc'hoz ex Etl. | Lamiaceae | 8 |
| Salvia cuspidata | Ruiz & Pav. | Lamiaceae | 8 |
| Salvia guaranitica | Dusén | Lamiaceae | 8 |
| Salvia pallida | Benth. | Lamiaceae | 8 |
| Salvia procurrens | Benth. | Lamiaceae | 8 |
| Salvia uliginosa | Benth. | Lamiaceae | 8 |
| Salvinia biloba | Raddi | Salviniaceae | 8 |
| Salvinia minima | Baker | Salviniaceae | 8 |
| Salvinia molesta | D.Mitch. | Salviniaceae | 8 |
| Sambucus australis | Cham. & Schltdl. | Viburnaceae | 8 |
| Samolus parviflorus | Raf. | Primulaceae | 8 |
| Sapindus saponaria | L. | Sapindaceae | 8 |
| Sapium glandulosum | (L.) Morong | Euphorbiaceae | 8 |
| Sapium haematospermum | Müll.Arg. | Euphorbiaceae | 8 |
| Sarcomphalus mistol | (Griseb.) Hauenschild | Rhamnaceae | 8 |
| Sauvagesia erecta | L. | Ochnaceae | 8 |
| Saxifraga magellanica | Poir. | Saxifragaceae | 8 |
| Sceptridium australe | (R.Br.) Lyon | Ophioglossaceae | 8 |
| Schaefferia argentinensis | Speg. | Celastraceae | 8 |
| Schinopsis balansae | Engl. | Anacardiaceae | 8 |
| Schinopsis lorentzii | (Griseb.) Engl. | Anacardiaceae | 8 |
| Schinus fasciculata | (Griseb.) I.M.Johnst. | Anacardiaceae | 8 |
| Schinus johnstonii | F.A.Barkley | Anacardiaceae | 8 |
| Schinus longifolia | Speg. | Anacardiaceae | 8 |
| Schinus molle | L. | Anacardiaceae | 8 |
| Schinus pilifera | I.M.Johnst. | Anacardiaceae | 8 |
| Schinus terebinthifolia | Raddi | Anacardiaceae | 8 |
| Schizachyrium microstachyum | (Desv.) Roseng., B.R.Arrill. & Izag. | Poaceae | 8 |
| Schizachyrium sanguineum | (Retz.) Alston | Poaceae | 8 |
| Schkuhria pinnata | (Lam.) Kuntze ex Thell. | Asteraceae | 8 |
| Schoenoplectus americanus | (Pers.) Volkart | Cyperaceae | 8 |
| Schoenoplectus californicus | (C.A.Mey.) Soják | Cyperaceae | 8 |
| Schoenoplectus pungens | (Vahl) Palla | Cyperaceae | 8 |
| Schoenoplectus tabernaemontani | (C.C.Gmel.) Palla | Cyperaceae | 8 |
| Schoepfia brasiliensis | A.DC. | Schoepfiaceae | 8 |
| Scleria ciliata | Michx. | Cyperaceae | 8 |
| Scleria distans | Poir. | Cyperaceae | 8 |
| Scleria gaertneri | Raddi | Cyperaceae | 8 |
| Scleria muehlenbergii | Steud. | Cyperaceae | 8 |
| Sclerophylax spinescens | Miers | Solanaceae | 8 |
| Scoparia dulcis | L. | Plantaginaceae | 8 |
| Scoparia montevidensis | (Spreng.) R.E.Fr. | Plantaginaceae | 8 |
| Scutellaria racemosa | Pers. | Lamiaceae | 8 |
| Scutia buxifolia | Reissek | Rhamnaceae | 8 |
| Sebastiania ramosissima | (A.St.-Hil.) A.L.Melo & M.F.Sales | Euphorbiaceae | 8 |
| Sebastiania schottiana | (Müll.Arg.) Müll.Arg. | Euphorbiaceae | 8 |
| Selaginella convoluta | (Arn.) Spring | Selaginellaceae | 8 |
| Selaginella peruviana | Hieron. | Selaginellaceae | 8 |
| Selaginella sellowii | Hieron. | Selaginellaceae | 8 |
| Senecio bonariensis | Hook. & Arn. | Asteraceae | 8 |
| Senecio brasiliensis | (Spreng.) Less. | Asteraceae | 8 |
| Senecio ceratophylloides | Griseb. | Asteraceae | 8 |
| Senecio crassiflorus | DC. | Asteraceae | 8 |
| Senecio filaginoides | DC. | Asteraceae | 8 |
| Senecio heterotrichius | DC. | Asteraceae | 8 |
| Senecio icoglossus | DC. | Asteraceae | 8 |
| Senecio pampeanus | Cabrera | Asteraceae | 8 |
| Senecio selloi | DC. | Asteraceae | 8 |
| Senecio subulatus | Don ex Hook. & Arn. | Asteraceae | 8 |
| Senegalia bonariensis | (Gillies ex Hook. & Arn.) Seigler & Ebinger | Fabaceae | 8 |
| Senegalia gilliesii | (Steud.) Seigler & Ebinger | Fabaceae | 8 |
| Senegalia praecox | (Griseb.) Seigler & Ebinger | Fabaceae | 8 |
| Senna aphylla | (Cav.) H.S.Irwin & Barneby | Fabaceae | 8 |
| Senna corymbosa | (Lam.) H.S.Irwin & Barneby | Fabaceae | 8 |
| Senna hirsuta | (L.) H.S.Irwin & Barneby | Fabaceae | 8 |
| Senna morongii | (Britton) H.S.Irwin & Barneby | Fabaceae | 8 |
| Senna obtusifolia | (L.) H.S.Irwin & Barneby | Fabaceae | 8 |
| Senna occidentalis | (L.) Link | Fabaceae | 8 |
| Senna pendula | (Humb. & Bonpl. ex Willd.) H.S.Irwin & Barneby | Fabaceae | 8 |
| Senna scabriuscula | (Vogel) H.S.Irwin & Barneby | Fabaceae | 8 |
| Senna spectabilis | (DC.) H.S.Irwin & Barneby | Fabaceae | 8 |
| Serjania glabrata | Kunth | Sapindaceae | 8 |
| Serjania meridionalis | Cambess. | Sapindaceae | 8 |
| Sesbania punicea | (Cav.) Benth. | Fabaceae | 8 |
| Sesbania virgata | (Cav.) Poir. | Fabaceae | 8 |
| Sesuvium portulacastrum | (L.) L. | Aizoaceae | 8 |
| Setaria leucopila | (Scribn. & Merr.) K.Schum. | Poaceae | 8 |
| Setaria magna | Griseb. | Poaceae | 8 |
| Setaria parviflora | (Poir.) Kerguélen | Poaceae | 8 |
| Sicyos malvifolius | Griseb. | Cucurbitaceae | 8 |
| Sida cordifolia | L. | Malvaceae | 8 |
| Sida planicaulis | Cav. | Malvaceae | 8 |
| Sida poeppigiana | (K.Schum.) Fryxell | Malvaceae | 8 |
| Sida spinosa | L. | Malvaceae | 8 |
| Sigesbeckia serrata | DC. | Asteraceae | 8 |
| Sinningia allagophylla | (Mart.) Wiehler | Gesneriaceae | 8 |
| Sinningia sellovii | (Mart.) Wiehler | Gesneriaceae | 8 |
| Siphocampylus foliosus | Griseb. | Campanulaceae | 8 |
| Siphocampylus verticillatus | (Cham.) G.Don | Campanulaceae | 8 |
| Sisyrinchium arenarium | Poepp. | Iridaceae | 8 |
| Sisyrinchium chilense | Hook. | Iridaceae | 8 |
| Sisyrinchium micranthum | Cav. | Iridaceae | 8 |
| Sisyrinchium minus | Engelm. & A.Gray | Iridaceae | 8 |
| Sisyrinchium pachyrhizum | Baker | Iridaceae | 8 |
| Sisyrinchium platense | I.M.Johnst. | Iridaceae | 8 |
| Smallanthus connatus | (Spreng.) H.Rob. | Asteraceae | 8 |
| Smilax campestris | Griseb. | Smilacaceae | 8 |
| Solanum americanum | Mill. | Solanaceae | 8 |
| Solanum amygdalifolium | Steud. | Solanaceae | 8 |
| Solanum angustifidum | Bitter | Solanaceae | 8 |
| Solanum atropurpureum | Schrank | Solanaceae | 8 |
| Solanum bonariense | L. | Solanaceae | 8 |
| Solanum capsicoides | All. | Solanaceae | 8 |
| Solanum chacoense | Bitter | Solanaceae | 8 |
| Solanum chenopodioides | Lam. | Solanaceae | 8 |
| Solanum commersonii | Poir. | Solanaceae | 8 |
| Solanum didymum | Dunal | Solanaceae | 8 |
| Solanum elaeagnifolium | Cav. | Solanaceae | 8 |
| Solanum glaucophyllum | Desf. | Solanaceae | 8 |
| Solanum guaraniticum | A.St.-Hil. | Solanaceae | 8 |
| Solanum juvenale | Thell. | Solanaceae | 8 |
| Solanum laxum | Spreng. | Solanaceae | 8 |
| Solanum mauritianum | Scop. | Solanaceae | 8 |
| Solanum nitidibaccatum | Bitter | Solanaceae | 8 |
| Solanum palinacanthum | Dunal | Solanaceae | 8 |
| Solanum pilcomayense | Morong | Solanaceae | 8 |
| Solanum pseudocapsicum | L. | Solanaceae | 8 |
| Solanum salicifolium | Phil. | Solanaceae | 8 |
| Solanum sanctae-catharinae | Dunal | Solanaceae | 8 |
| Solanum sarrachoides | Sendtn. | Solanaceae | 8 |
| Solanum sisymbriifolium | Lam. | Solanaceae | 8 |
| Solanum triflorum | Nutt. | Solanaceae | 8 |
| Solanum viarum | Dunal | Solanaceae | 8 |
| Solanum volubile | Sw. | Solanaceae | 8 |
| Solidago chilensis | Meyen | Asteraceae | 8 |
| Soliva anthemifolia | (Juss.) Sweet | Asteraceae | 8 |
| Soliva sessilis | Ruiz & Pav. | Asteraceae | 8 |
| Sommerfeltia spinulosa | Less. | Asteraceae | 8 |
| Sorghastrum setosum | (Griseb.) Hitchc. | Poaceae | 8 |
| Spergularia marina | (L.) Besser | Caryophyllaceae | 8 |
| Spergularia villosa | (Pers.) Cambess. | Caryophyllaceae | 8 |
| Spermacoce dasycephala | (Cham. & Schltdl.) Delprete | Rubiaceae | 8 |
| Spermacoce densiflora | (DC.) Alain | Rubiaceae | 8 |
| Spermacoce exilis | (L.O.Williams) C.D.Adams ex W.C.Burger & C.M.Taylor | Rubiaceae | 8 |
| Spermacoce latifolia | Aubl. | Rubiaceae | 8 |
| Spermacoce prostrata | Aubl. | Rubiaceae | 8 |
| Spermacoce verticillata | L. | Rubiaceae | 8 |
| Sphaeralcea bonariensis | (Cav.) Griseb. | Malvaceae | 8 |
| Sphaeralcea cordobensis | Krapov. | Malvaceae | 8 |
| Sphaeralcea mendocina | Phil. | Malvaceae | 8 |
| Sphaeralcea miniata | (Cav.) Spach | Malvaceae | 8 |
| Spigelia humboldtiana | Cham. & Schltdl. | Loganiaceae | 8 |
| Spirodela punctata | (G.Mey.) C.H.Thomps. | Araceae | 8 |
| Sporobolus alterniflorus | (Loisel.) P.M.Peterson & Saarela | Poaceae | 8 |
| Sporobolus indicus | (L.) R.Br. | Poaceae | 8 |
| Sporobolus montevidensis | (Arechav.) P.M.Peterson & Saarela | Poaceae | 8 |
| Sporobolus pyramidatus | (Lam.) Hitchc. | Poaceae | 8 |
| Stachytarpheta cayennensis | (Rich.) Vahl | Verbenaceae | 8 |
| Stapfochloa canterae | (Arechav.) P.M.Peterson | Poaceae | 8 |
| Stapfochloa ciliata | (Sw.) P.M.Peterson | Poaceae | 8 |
| Steinchisma hians | (Elliott) Nash | Poaceae | 8 |
| Stemodia verticillata | (Mill.) Hassl. | Plantaginaceae | 8 |
| Stenandrium dulce | (Cav.) Nees | Acanthaceae | 8 |
| Stenotaphrum secundatum | (Walter) Kuntze | Poaceae | 8 |
| Stetsonia coryne | (Salm-Dyck) Britton & Rose | Cactaceae | 8 |
| Stigmaphyllon bonariense | (Hook. & Arn.) C.E.Anderson | Malpighiaceae | 8 |
| Strombocarpa strombulifera | (Lam.) A.Gray | Fabaceae | 8 |
| Strombocarpa torquata | (Lag.) Hutch. ex C.E.Hughes & G.P.Lewis | Fabaceae | 8 |
| Stuckenia filiformis | (Pers.) Börner | Potamogetonaceae | 8 |
| Stylosanthes guianensis | (Aubl.) Sw. | Fabaceae | 8 |
| Stylosanthes scabra | Vogel | Fabaceae | 8 |
| Stylosanthes viscosa | (L.) Sw. | Fabaceae | 8 |
| Suaeda divaricata | Moq. | Chenopodiaceae | 8 |
| Syagrus romanzoffiana | (Cham.) Glassman | Arecaceae | 8 |
| Symphyotrichum regnellii | (Baker) G.L.Nesom | Asteraceae | 8 |
| Symplocos uniflora | (Pohl) Benth. | Symplocaceae | 8 |
| Tabebuia aurea | (Silva Manso) Benth. & Hook.f. ex S.Moore | Bignoniaceae | 8 |
| Tabebuia nodosa | (Griseb.) Griseb. | Bignoniaceae | 8 |
| Tabernaemontana catharinensis | A.DC. | Apocynaceae | 8 |
| Tagetes filifolia | Lag. | Asteraceae | 8 |
| Tagetes minuta | L. | Asteraceae | 8 |
| Talinum fruticosum | (L.) Juss. | Talinaceae | 8 |
| Talinum paniculatum | (Jacq.) Gaertn. | Talinaceae | 8 |
| Talinum polygaloides | Gillies ex Arn. | Talinaceae | 8 |
| Tanaecium dichotomum | (Jacq.) Kaehler & L.G.Lohmann | Bignoniaceae | 8 |
| Tarasa capitata | (Cav.) D.M.Bates | Malvaceae | 8 |
| Tarenaya aculeata | (L.) Soares Neto & Roalson | Cleomaceae | 8 |
| Tarenaya houtteana | (Schltdl.) Soares Neto & Roalson | Cleomaceae | 8 |
| Tecoma stans | (L.) Juss. | Bignoniaceae | 8 |
| Tectaria incisa | Cav. | Tectariaceae | 8 |
| Telmatoblechnum serrulatum | (Rich.) Perrie, D.J.Ohlsen & Brownsey | Blechnaceae | 8 |
| Tephrocactus articulatus | (Pfeiff.) Backeb. | Cactaceae | 8 |
| Tephrosia cinerea | (L.) Pers. | Fabaceae | 8 |
| Terminalia australis | Cambess. | Combretaceae | 8 |
| Tessaria absinthioides | (Hook. & Arn.) DC. | Asteraceae | 8 |
| Teucrium cubense | Jacq. | Lamiaceae | 8 |
| Teucrium vesicarium | Mill. | Lamiaceae | 8 |
| Thalia geniculata | L. | Marantaceae | 8 |
| Thalia multiflora | Horkel ex Körn. | Marantaceae | 8 |
| Thelesperma megapotamicum | (Spreng.) Kuntze | Asteraceae | 8 |
| Thymophylla pentachaeta | (DC.) Small | Asteraceae | 8 |
| Tilesia baccata | (L.) Pruski | Asteraceae | 8 |
| Tillandsia aeranthos | (Loisel.) Desf. | Bromeliaceae | 8 |
| Tillandsia argentina | C.H.Wright | Bromeliaceae | 8 |
| Tillandsia capillaris | Ruiz & Pav. | Bromeliaceae | 8 |
| Tillandsia didisticha | (É.Morren) Baker | Bromeliaceae | 8 |
| Tillandsia duratii | Vis. | Bromeliaceae | 8 |
| Tillandsia geminiflora | Brongn. | Bromeliaceae | 8 |
| Tillandsia ixioides | Griseb. | Bromeliaceae | 8 |
| Tillandsia loliacea | Mart. ex Schult. & Schult.f. | Bromeliaceae | 8 |
| Tillandsia lorentziana | Griseb. | Bromeliaceae | 8 |
| Tillandsia pedicellata | (Mez) A.Cast. | Bromeliaceae | 8 |
| Tillandsia recurvata | (L.) L. | Bromeliaceae | 8 |
| Tillandsia recurvifolia | Hook. | Bromeliaceae | 8 |
| Tillandsia streptocarpa | Baker | Bromeliaceae | 8 |
| Tillandsia stricta | Sol. ex Ker Gawl. | Bromeliaceae | 8 |
| Tillandsia tenuifolia | L. | Bromeliaceae | 8 |
| Tillandsia tricholepis | Baker | Bromeliaceae | 8 |
| Tillandsia usneoides | (L.) L. | Bromeliaceae | 8 |
| Tillandsia virescens | Ruiz & Pav. | Bromeliaceae | 8 |
| Tipuana tipu | (Benth.) Kuntze | Fabaceae | 8 |
| Trachypogon spicatus | (L.f.) Kuntze | Poaceae | 8 |
| Tradescantia boliviana | (Hassk.) J.R.Grant | Commelinaceae | 8 |
| Tradescantia cerinthoides | Kunth | Commelinaceae | 8 |
| Tradescantia fluminensis | Vell. | Commelinaceae | 8 |
| Trema micranthum | (L.) Blume | Cannabaceae | 8 |
| Trianthema portulacastrum | L. | Aizoaceae | 8 |
| Trichocentrum pumilum | (Lindl.) M.W.Chase & N.H.Williams | Orchidaceae | 8 |
| Trichocline reptans | Hieron. | Asteraceae | 8 |
| Trichogalium latoramosum | (Clos) Kadereit & Schneew. | Rubiaceae | 8 |
| Trichostigma octandrum | (L.) H.Walter | Petiveriaceae | 8 |
| Tricomaria usillo | Hook. & Arn. | Malpighiaceae | 8 |
| Tridax procumbens | L. | Asteraceae | 8 |
| Trifolium amabile | Kunth | Fabaceae | 8 |
| Triglochin maritima | L. | Juncaginaceae | 8 |
| Triglochin palustris | L. | Juncaginaceae | 8 |
| Triglochin scilloides | (Poir.) Mering & Kadereit | Juncaginaceae | 8 |
| Triglochin striata | Ruiz & Pav. | Juncaginaceae | 8 |
| Trimezia candida | (Hassl.) Ravenna | Iridaceae | 8 |
| Triodanis perfoliata | (L.) Nieuwl. | Campanulaceae | 8 |
| Tripodanthus acutifolius | (Ruiz & Pav.) Tiegh. | Loranthaceae | 8 |
| Tripodanthus flagellaris | Tiegh. | Loranthaceae | 8 |
| Tripogandra diuretica | (Mart.) Handlos | Commelinaceae | 8 |
| Tripogonella spicata | (Nees) P.M.Peterson & Romasch. | Poaceae | 8 |
| Trithrinax campestris | (Burmeist.) Drude & Griseb. | Arecaceae | 8 |
| Triumfetta semitriloba | Jacq. | Malvaceae | 8 |
| Trixis cacalioides | D.Don | Asteraceae | 8 |
| Tropaeolum pentaphyllum | Lam. | Tropaeolaceae | 8 |
| Turnera grandiflora | (Urb.) Arbo | Passifloraceae | 8 |
| Turnera pumilea | L. | Passifloraceae | 8 |
| Turnera sidoides | L. | Passifloraceae | 8 |
| Tweedia brunonis | Hook. & Arn. | Apocynaceae | 8 |
| Typha domingensis | Pers. | Typhaceae | 8 |
| Typha latifolia | L. | Typhaceae | 8 |
| Urera baccifera | (L.) Gaudich. ex Wedd. | Urticaceae | 8 |
| Urera caracasana | (Jacq.) Gaudich. ex Griseb. | Urticaceae | 8 |
| Urochloa platyphylla | (Munro ex C.Wright) R.D.Webster | Poaceae | 8 |
| Urolepis hecatantha | (DC.) R.M.King & H.Rob. | Asteraceae | 8 |
| Urtica chamaedryoides | Pursh | Urticaceae | 8 |
| Urtica gracilis | Aiton | Urticaceae | 8 |
| Urvillea ulmacea | Kunth | Sapindaceae | 8 |
| Urvillea uniloba | Radlk. | Sapindaceae | 8 |
| Utricularia foliosa | L. | Lentibulariaceae | 8 |
| Utricularia gibba | L. | Lentibulariaceae | 8 |
| Utricularia laxa | A.St.-Hil. & Girard | Lentibulariaceae | 8 |
| Utricularia platensis | Speg. | Lentibulariaceae | 8 |
| Utricularia pusilla | Vahl | Lentibulariaceae | 8 |
| Utricularia subulata | L. | Lentibulariaceae | 8 |
| Utricularia tricolor | A.St.-Hil. | Lentibulariaceae | 8 |
| Utricularia triloba | Benj. | Lentibulariaceae | 8 |
| Vachellia aroma | (Gillies ex Hook. & Arn.) Seigler & Ebinger | Fabaceae | 8 |
| Vachellia caven | (Molina) Seigler & Ebinger | Fabaceae | 8 |
| Vachellia farnesiana | (L.) Wight & Arn. | Fabaceae | 8 |
| Vachellia macracantha | (Humb. & Bonpl. ex Willd.) Seigler & Ebinger | Fabaceae | 8 |
| Valeriana scandens | L. | Caprifoliaceae | 8 |
| Vallesia glabra | (Cav.) Link | Apocynaceae | 8 |
| Varronia curassavica | Jacq. | Cordiaceae | 8 |
| Varronia dichotoma | Ruiz & Pav. | Cordiaceae | 8 |
| Vasconcellea quercifolia | A.St.-Hil. | Caricaceae | 8 |
| Vassobia breviflora | (Sendtn.) Hunz. | Solanaceae | 8 |
| Verbena aristigera | S.Moore | Verbenaceae | 8 |
| Verbena bonariensis | L. | Verbenaceae | 8 |
| Verbena brasiliensis | Vell. | Verbenaceae | 8 |
| Verbena hispida | Ruiz & Pav. | Verbenaceae | 8 |
| Verbena litoralis | Kunth | Verbenaceae | 8 |
| Verbena mendocina | Phil. | Verbenaceae | 8 |
| Verbena montevidensis | Spreng. | Verbenaceae | 8 |
| Verbena parodii | (Covas & Schnack) Moldenke | Verbenaceae | 8 |
| Verbena peruviana | (L.) Britton | Verbenaceae | 8 |
| Verbena platensis | Spreng. | Verbenaceae | 8 |
| Verbena rigida | Spreng. | Verbenaceae | 8 |
| Verbena selloi | Spreng. | Verbenaceae | 8 |
| Verbena tenera | Spreng. | Verbenaceae | 8 |
| Verbena tweedieana | Niven ex Hook. | Verbenaceae | 8 |
| Verbena venturii | Moldenke | Verbenaceae | 8 |
| Vernonanthura montevidensis | (Spreng.) H.Rob. | Asteraceae | 8 |
| Vernonanthura nudiflora | (Less.) H.Rob. | Asteraceae | 8 |
| Vernonia incana | Less. | Asteraceae | 8 |
| Veronica peregrina | L. | Plantaginaceae | 8 |
| Victoria cruziana | Orbign. | Nymphaeaceae | 8 |
| Vigna longifolia | (Benth.) Verdc. | Fabaceae | 8 |
| Vigna luteola | (Jacq.) Benth. | Fabaceae | 8 |
| Viguiera tucumanensis | (Hook. & Arn.) Griseb. | Asteraceae | 8 |
| Vitex megapotamica | (Spreng.) Moldenke | Lamiaceae | 8 |
| Vittaria lineata | (L.) Sm. | Pteridaceae | 8 |
| Viviania albiflora | (Cambess.) Reiche | Francoaceae | 8 |
| Voyria aphylla | (Jacq.) Pers. | Gentianaceae | 8 |
| Vriesea friburgensis | Mez | Bromeliaceae | 8 |
| Wahlenbergia linarioides | (Lam.) A.DC. | Campanulaceae | 8 |
| Waltheria indica | L. | Malvaceae | 8 |
| Wedelia glauca | (Ortega) Hoffm. | Asteraceae | 8 |
| Wissadula gymnanthemum | (Griseb.) K.Schum. | Malvaceae | 8 |
| Wolffia brasiliensis | Wedd. | Araceae | 8 |
| Wolffia columbiana | H.Karst. | Araceae | 8 |
| Wullschlaegelia aphylla | (Sw.) Rchb.f. | Orchidaceae | 8 |
| Xanthium orientale | L. | Asteraceae | 8 |
| Xanthium spinosum | L. | Asteraceae | 8 |
| Ximenia americana | L. | Olacaceae | 8 |
| Xylopia brasiliensis | Spreng. | Annonaceae | 8 |
| Xylosma tweediana | (Clos) Eichlam | Salicaceae | 8 |
| Xylosma venosa | N.E.Br. | Salicaceae | 8 |
| Xyris jupicai | Rich. | Xyridaceae | 8 |
| Zannichellia palustris | L. | Potamogetonaceae | 8 |
| Zanthoxylum coco | Gillies ex Hook. & Arn. | Rutaceae | 8 |
| Zanthoxylum fagara | Sarg. | Rutaceae | 8 |
| Zanthoxylum petiolare | A.St.-Hil. & Tul. | Rutaceae | 8 |
| Zanthoxylum rhoifolium | Lam. | Rutaceae | 8 |
| Zapoteca formosa | (Kunth) H.M.Hern. | Fabaceae | 8 |
| Zephyranthes americana | (Hoffmanns.) Ravenna | Amaryllidaceae | 8 |
| Zephyranthes candida | (Lindl.) Herb. | Amaryllidaceae | 8 |
| Zephyranthes mesochloa | Herb. | Amaryllidaceae | 8 |
| Zephyranthes minima | Herb. | Amaryllidaceae | 8 |
| Zinnia peruviana | (L.) L. | Asteraceae | 8 |
| Zornia latifolia | Sm. | Fabaceae | 8 |
| Zornia reticulata | Sm. | Fabaceae | 8 |
| Abobra tenuifolia | Naudin | Cucurbitaceae | 7 |
| Adesmia muricata | (Jacq.) DC. | Fabaceae | 7 |
| Baccharis oxyodonta | DC. | Asteraceae | 7 |
| Blumenbachia latifolia | Cambess. | Loasaceae | 7 |
| Burmannia flava | Mart. | Burmanniaceae | 7 |
| Campomanesia aurea | O.Berg | Myrtaceae | 7 |
| Carex bonariensis | Desf. ex Poir. | Cyperaceae | 7 |
| Casearia aculeata | Jacq. | Salicaceae | 7 |
| Catasetum macrocarpum | Rich. ex Kunth | Orchidaceae | 7 |
| Cayaponia martiana | (Cogn.) Cogn. | Cucurbitaceae | 7 |
| Centrosema sagittatum | (Humb. & Bonpl. ex Willd.) Brandegee | Fabaceae | 7 |
| Christella hispidula | (Decne.) Holttum | Thelypteridaceae | 7 |
| Chrysanthellum indicum | DC. | Asteraceae | 7 |
| Croton hieronymi | Griseb. | Euphorbiaceae | 7 |
| Cuscuta xanthochortos | Mart. ex Engelm. | Convolvulaceae | 7 |
| Cyperus hortensis | (Salzm. ex Steud.) Dorr | Cyperaceae | 7 |
| Desmodium cuneatum | Hook. & Arn. | Fabaceae | 7 |
| Dinoseris salicifolia | Griseb. | Asteraceae | 7 |
| Eleocharis bonariensis | Nees | Cyperaceae | 7 |
| Ephedra triandra | Tul. | Ephedraceae | 7 |
| Eriochloa acuminata | (J.Presl) Kunth | Poaceae | 7 |
| Eryngium agavifolium | Griseb. | Apiaceae | 7 |
| Eryngium divaricatum | Hook. & Arn. | Apiaceae | 7 |
| Evolvulus convolvuloides | (Willd.) Stearn | Convolvulaceae | 7 |
| Fischeria stellata | (Vell.) E.Fourn. | Apocynaceae | 7 |
| Grindelia brachystephana | Griseb. | Asteraceae | 7 |
| Guarea macrophylla | Vahl | Meliaceae | 7 |
| Gymnocalycium mostii | (Gürke) Britton & Rose | Cactaceae | 7 |
| Gymnocalycium quehlianum | (F.Haage ex H.Quehl) Vaupel ex Hosseus | Cactaceae | 7 |
| Gyptis tanacetifolia | (Gillies ex Hook. & Arn.) D.J.N.Hind & Flann | Asteraceae | 7 |
| Hygrophila costata | Nees | Acanthaceae | 7 |
| Jaborosa kurtzii | Hunz. & Barboza | Solanaceae | 7 |
| Jacaranda micrantha | Cham. | Bignoniaceae | 7 |
| Jungia sellowii | Less. | Asteraceae | 7 |
| Lycium gilliesianum | Miers | Solanaceae | 7 |
| Mimosa bonplandii | Benth. | Fabaceae | 7 |
| Mimosa uraguensis | Hook. & Arn. | Fabaceae | 7 |
| Monteiroa glomerata | (Hook. & Arn.) Krapov. | Malvaceae | 7 |
| Morisonia salicifolia | (Griseb.) Christenh. & Byng | Capparaceae | 7 |
| Oldenlandia salzmannii | (DC.) Benth. & Hook.f. ex B.D.Jacks. | Rubiaceae | 7 |
| Olyra latifolia | L. | Poaceae | 7 |
| Ophioglossum nudicaule | L.f. | Ophioglossaceae | 7 |
| Passiflora tenuifila | Killip | Passifloraceae | 7 |
| Paullinia elegans | Cambess. | Sapindaceae | 7 |
| Persicaria meisneriana | (Cham. & Schltdl.) M.Gómez | Polygonaceae | 7 |
| Plectrocarpa tetracantha | Gillies ex Hook. & Arn. | Zygophyllaceae | 7 |
| Porophyllum lanceolatum | DC. | Asteraceae | 7 |
| Portulaca confertifolia | Hauman | Portulacaceae | 7 |
| Prestonia quinquangularis | (Jacq.) Spreng. | Apocynaceae | 7 |
| Pseudognaphalium cheiranthifolium | (Lam.) Hilliard & B.L.Burtt | Asteraceae | 7 |
| Pterocaulon angustifolium | DC. | Asteraceae | 7 |
| Rhabdadenia ragonesei | Woodson | Apocynaceae | 7 |
| Rubus urticifolius | Poir. | Rosaceae | 7 |
| Sicyos polyacanthos | Cogn. | Cucurbitaceae | 7 |
| Sinningia elatior | (Kunth) Chautems | Gesneriaceae | 7 |
| Sisyrinchium palmifolium | L. | Iridaceae | 7 |
| Sisyrinchium vaginatum | Spreng. | Iridaceae | 7 |
| Solanum stuckertii | Bitter | Solanaceae | 7 |
| Solanum symmetricum | Rusby | Solanaceae | 7 |
| Sphaeralcea australis | Speg. | Malvaceae | 7 |
| Staelia virgata | (Willd.) K.Schum. | Rubiaceae | 7 |
| Tillandsia andicola | Gillies ex Baker | Bromeliaceae | 7 |
| Tillandsia bandensis | Baker | Bromeliaceae | 7 |
| Tillandsia minutiflora | Donadio | Bromeliaceae | 7 |
| Tillandsia xiphioides | Ker Gawl. | Bromeliaceae | 7 |
| Tradescantia crassula | Link & Otto | Commelinaceae | 7 |
| Trichilia elegans | A.Juss. | Meliaceae | 7 |
| Trifolium polymorphum | Poir. | Fabaceae | 7 |
| Verbena intermedia | Gillies & Hook. | Verbenaceae | 7 |
| Zapoteca portoricensis | (Jacq.) H.M.Hern. | Fabaceae | 7 |
| Adiantum tetraphyllum | Humb. & Bonpl. ex Willd. | Pteridaceae | 6 |
| Alternanthera albida | (Moq.) Griseb. | Amaranthaceae | 6 |
| Araujia stormiana | Morong | Apocynaceae | 6 |
| Asclepias candida | Vell. | Apocynaceae | 6 |
| Ayenia cordobensis | Hieron. | Malvaceae | 6 |
| Ayenia lingulata | Griseb. | Malvaceae | 6 |
| Ayenia pedersenii | (Cristóbal) Christenh. & Byng | Malvaceae | 6 |
| Baccharis gnaphalioides | Spreng. | Asteraceae | 6 |
| Bacopa rotundifolia | (Michx.) Wettst. | Plantaginaceae | 6 |
| Billbergia zebrina | (Herb.) Lindl. | Bromeliaceae | 6 |
| Cabralea canjerana | (Vell.) Mart. | Meliaceae | 6 |
| Calea cymosa | Less. | Asteraceae | 6 |
| Campomanesia xanthocarpa | (Mart.) O.Berg | Myrtaceae | 6 |
| Canavalia brasiliensis | Mart. ex Benth. | Fabaceae | 6 |
| Carex firmicaulis | Kalela | Cyperaceae | 6 |
| Castilleja pumila | (Benth.) Wedd. | Orobanchaceae | 6 |
| Ceiba pubiflora | (A.St.-Hil.) K.Schum. | Malvaceae | 6 |
| Celtis spinosa | Spreng. | Cannabaceae | 6 |
| Chaptalia sinuata | Vent. ex Steud. | Asteraceae | 6 |
| Chevreulia acuminata | Less. | Asteraceae | 6 |
| Chloroluma gonocarpa | (Mart. & Eichler ex Miq.) Baill. ex Aubrév. | Sapotaceae | 6 |
| Commelina platyphylla | Klotzsch | Commelinaceae | 6 |
| Convolvulus laciniatus | Desr. | Convolvulaceae | 6 |
| Coutarea hexandra | (Jacq.) K.Schum. | Rubiaceae | 6 |
| Croton argenteus | L. | Euphorbiaceae | 6 |
| Cuphea calophylla | Cham. & Schltdl. | Lythraceae | 6 |
| Cuphea melvilla | Lindl. | Lythraceae | 6 |
| Cypella laeta | Ravenna | Iridaceae | 6 |
| Dianthera laevilinguis | (Nees) Lindau | Acanthaceae | 6 |
| Dicliptera scutellata | Griseb. | Acanthaceae | 6 |
| Diodia saponariifolia | (Cham. & Schltdl.) K.Schum. | Rubiaceae | 6 |
| Doryopteris triphylla | (Lam.) Christ | Pteridaceae | 6 |
| Euploca filiformis | (Lehm.) J.I.M.Melo & Semir | Heliotropiaceae | 6 |
| Funastrum gracile | (Decne.) Schltr. | Apocynaceae | 6 |
| Gelasine elongata | (Graham) Ravenna | Iridaceae | 6 |
| Grindelia cabrerae | Ariza | Asteraceae | 6 |
| Habenaria pumila | Poepp. | Orchidaceae | 6 |
| Hoffmannseggia trifoliata | Cav. | Fabaceae | 6 |
| Ilex theezans | Mart. | Aquifoliaceae | 6 |
| Jarava plumosa | (Spreng.) S.W.L.Jacobs & J.Everett | Poaceae | 6 |
| Junellia succulentifolia | (Kuntze) Moldenke | Verbenaceae | 6 |
| Lilaeopsis minor | (A.W.Hill) Pérez-Mor. | Apiaceae | 6 |
| Lobelia xalapensis | Kunth | Campanulaceae | 6 |
| Lycianthes repens | (Spreng.) Bitter | Solanaceae | 6 |
| Lycium elongatum | Miers | Solanaceae | 6 |
| Macroptilium gracile | (Poepp. ex Benth.) Urb. | Fabaceae | 6 |
| Magonia pubescens | A.St.-Hil. | Sapindaceae | 6 |
| Menodora intricata | Brandegee | Oleaceae | 6 |
| Microchloa kunthii | Desv. | Poaceae | 6 |
| Mitracarpus megapotamicus | (Spreng.) Kuntze | Rubiaceae | 6 |
| Neltuma humilis | (Gillies ex Hook.) C.E.Hughes & G.P.Lewis | Fabaceae | 6 |
| Nicotiana paa | Mart.Crov. | Solanaceae | 6 |
| Nissolia brasiliensis | (Vogel) T.M.Moura & Fort.-Perez | Fabaceae | 6 |
| Noticastrum argenteum | Cabrera | Asteraceae | 6 |
| Oenothera parodiana | Munz | Onagraceae | 6 |
| Parablechnum cordatum | (Desv.) Gasper & Salino | Blechnaceae | 6 |
| Parodia linkii | (Lehm.) R.Kiesling | Cactaceae | 6 |
| Passiflora chrysophylla | Chodat | Passifloraceae | 6 |
| Peperomia aceroana | C.DC. | Piperaceae | 6 |
| Peperomia hispidula | (Sw.) A.Dietr. | Piperaceae | 6 |
| Phalaris angusta | Nees ex Trin. | Poaceae | 6 |
| Picrosia cabreriana | A.G.Schulz | Asteraceae | 6 |
| Poa iridifolia | Hauman | Poaceae | 6 |
| Poa ligularis | Nees ex Steud. | Poaceae | 6 |
| Polystichum montevidense | (Spreng.) Rosenst. | Dryopteridaceae | 6 |
| Prescottia oligantha | (Sw.) Lindl. | Orchidaceae | 6 |
| Prockia crucis | P.Browne ex L. | Salicaceae | 6 |
| Pterocaulon cordobense | Kuntze | Asteraceae | 6 |
| Rubus erythroclados | Mart. ex Hook.f. | Rosaceae | 6 |
| Sageretia elegans | (Kunth) Brongn. | Rhamnaceae | 6 |
| Sanvitalia versicolor | Griseb. | Asteraceae | 6 |
| Schultesia guianensis | (Aubl.) Malme | Gentianaceae | 6 |
| Senecio ostenii | Mattf. | Asteraceae | 6 |
| Senegalia tucumanensis | (Griseb.) Seigler & Ebinger | Fabaceae | 6 |
| Senna pachyrrhiza | (L.Bravo) H.S.Irwin & Barneby | Fabaceae | 6 |
| Solanum corymbiflorum | (Sendtn.) Bohs | Solanaceae | 6 |
| Solanum hieronymi | Kuntze | Solanaceae | 6 |
| Soliva stolonifera | (Brot.) Loudon | Asteraceae | 6 |
| Sorocea bonplandii | (Baill.) W.C.Burger, Lanj. & Wess.Boer | Moraceae | 6 |
| Spathicarpa hastifolia | Hook. | Araceae | 6 |
| Sphaeralcea crispa | Hook. ex Baker f. | Malvaceae | 6 |
| Tagetes argentina | Cabrera | Asteraceae | 6 |
| Tarasa humilis | (Gillies ex Hook. & Arn.) Krapov. | Malvaceae | 6 |
| Tradescantia mundula | Kunth | Commelinaceae | 6 |
| Tragia volubilis | L. | Euphorbiaceae | 6 |
| Trichocline sinuata | (D.Don) Cabrera | Asteraceae | 6 |
| Tripogandra glandulosa | (Seub.) Rohweder | Commelinaceae | 6 |
| Verbena santiaguensis | (Covas & Schnack) Moldenke | Verbenaceae | 6 |
| Vernonanthura chamaedrys | (Less.) H.Rob. | Asteraceae | 6 |
| Achatocarpus praecox | Griseb. | Achatocarpaceae | 5 |
| Adesmia candida | Hook.f. | Fabaceae | 5 |
| Aeschynomene denticulata | Rudd | Fabaceae | 5 |
| Aeschynomene rudis | Benth. | Fabaceae | 5 |
| Aiouea amoena | (Nees & Mart.) R.Rohde | Lauraceae | 5 |
| Arachis villosa | Benth. | Fabaceae | 5 |
| Aristolochia macroura | Ortega | Aristolochiaceae | 5 |
| Asplenium balansae | (Baker) Sylvestre | Aspleniaceae | 5 |
| Asplenium serratum | L. | Aspleniaceae | 5 |
| Baccharis microdonta | DC. | Asteraceae | 5 |
| Baccharis tenella | Hook. & Arn. | Asteraceae | 5 |
| Bacopa salzmannii | (Benth.) Edwall | Plantaginaceae | 5 |
| Bauhinia bauhinioides | (Mart.) J.F.Macbr. | Fabaceae | 5 |
| Blechnum polypodioides | Raddi | Blechnaceae | 5 |
| Bothriochloa springfieldii | (Gould) Parodi | Poaceae | 5 |
| Bowlesia tropaeolifolia | Gillies & Hook. | Apiaceae | 5 |
| Calea pinnatifida | Banks ex Steud. | Asteraceae | 5 |
| Calibrachoa heterophylla | (Sendtn.) Wijsman | Solanaceae | 5 |
| Callaeum psilophyllum | (A.Juss.) D.M.Johnson | Malpighiaceae | 5 |
| Calliandra brevicaulis | Micheli | Fabaceae | 5 |
| Calliandra longipes | Benth. | Fabaceae | 5 |
| Canavalia ensiformis | (L.) DC. | Fabaceae | 5 |
| Caperonia cordata | A.St.-Hil. | Euphorbiaceae | 5 |
| Carex chilensis | Brongn. | Cyperaceae | 5 |
| Carex polysticha | Boeckeler | Cyperaceae | 5 |
| Carex rupicola | (Pedersen) G.A.Wheeler | Cyperaceae | 5 |
| Chamaecrista repens | (Vogel) H.S.Irwin & Barneby | Fabaceae | 5 |
| Citronella gongonha | (Mart.) R.A.Howard | Cardiopteridaceae | 5 |
| Cleome gigantea | L. | Cleomaceae | 5 |
| Condalia buxifolia | Reissek | Rhamnaceae | 5 |
| Cordia americana | (L.) Gottschling & J.S.Mill. | Cordiaceae | 5 |
| Cordia trichotoma | (Vell.) Steud. | Cordiaceae | 5 |
| Cortaderia rudiuscula | Stapf | Poaceae | 5 |
| Crotalaria maypurensis | Kunth | Fabaceae | 5 |
| Cuphea lysimachioides | Cham. & Schltdl. | Lythraceae | 5 |
| Cuphea tuberosa | Cham. & Schltdl. | Lythraceae | 5 |
| Cyclopogon apricus | (Lindl.) Schltr. | Orchidaceae | 5 |
| Cyclopogon congestus | (Vell.) Hoehne | Orchidaceae | 5 |
| Cyperus laxus | Lam. | Cyperaceae | 5 |
| Cyperus reflexus | Vahl | Cyperaceae | 5 |
| Denisophytum stuckertii | (Hassl.) Gagnon & G.P.Lewis | Fabaceae | 5 |
| Desmodium affine | Schltdl. | Fabaceae | 5 |
| Echinopepon racemosus | (Steud.) C.Jeffrey | Cucurbitaceae | 5 |
| Eleocharis flavescens | (Poir.) Urb. | Cyperaceae | 5 |
| Escallonia megapotamica | Spreng. | Escalloniaceae | 5 |
| Euphorbia klotzschii | Oudejans | Euphorbiaceae | 5 |
| Euploca campestris | (Griseb.) Diane & Hilger | Heliotropiaceae | 5 |
| Eupodium pittieri | (Maxon) Christenh. | Marattiaceae | 5 |
| Gaillardia cabrerae | Covas | Asteraceae | 5 |
| Galianthe centranthoides | (Cham. & Schltdl.) E.L.Cabral | Rubiaceae | 5 |
| Galianthe laxa | (Cham. & Schltdl.) E.L.Cabral | Rubiaceae | 5 |
| Gamochaeta falcata | (Lam.) Cabrera | Asteraceae | 5 |
| Gentiana gayi | Griseb. | Gentianaceae | 5 |
| Harrisia regelii | (Weing.) Borg | Cactaceae | 5 |
| Hippeastrum argentinum | (Pax) Hunz. | Amaryllidaceae | 5 |
| Ipomoea bonariensis | Hook. | Convolvulaceae | 5 |
| Isostigma peucedanifolium | (Spreng.) Less. | Asteraceae | 5 |
| Jatropha excisa | Griseb. | Euphorbiaceae | 5 |
| Junellia origenes | (Phil.) N.O'Leary & P.Peralta | Verbenaceae | 5 |
| Justicia floribunda | (J.J.Veitch) Wassh. | Acanthaceae | 5 |
| Lindsaea lancea | (L.) Bedd. | Lindsaeaceae | 5 |
| Linum selaginoides | Lam. | Linaceae | 5 |
| Lippia turnerifolia | Cham. | Verbenaceae | 5 |
| Lobelia aquatica | Cham. | Campanulaceae | 5 |
| Lonchocarpus nitidus | (Vogel) Benth. | Fabaceae | 5 |
| Lorentzianthus viscidus | (Hook. & Arn.) R.M.King & H.Rob. | Asteraceae | 5 |
| Lupinus lanatus | Benth. | Fabaceae | 5 |
| Manihot anisophylla | Müll.Arg. | Euphorbiaceae | 5 |
| Maxillaria picta | Hook. | Orchidaceae | 5 |
| Melochia anomala | Griseb. | Malvaceae | 5 |
| Melothria trilobata | Cogn. | Cucurbitaceae | 5 |
| Mimosa pilulifera | Benth. | Fabaceae | 5 |
| Mimosa rocae | Lorentz & Niederl. | Fabaceae | 5 |
| Mostacillastrum orbignyanum | (E.Fourn.) Al-Shehbaz | Brassicaceae | 5 |
| Myrcia oblongata | DC. | Myrtaceae | 5 |
| Nicotiana petunioides | (Griseb.) Millán | Solanaceae | 5 |
| Nierembergia tandilensis | (Kuntze) Cabrera | Solanaceae | 5 |
| Oxypetalum pannosum | Decne. | Apocynaceae | 5 |
| Pavonia glechomoides | A.St.-Hil. | Malvaceae | 5 |
| Pavonia missionum | Ekman | Malvaceae | 5 |
| Pavonia psilophylla | Ekman | Malvaceae | 5 |
| Persicaria hispida | (Kunth) M.Gómez | Polygonaceae | 5 |
| Phenax sonneratii | (Poir.) Wedd. | Urticaceae | 5 |
| Phyllanthus chacoensis | Morong | Phyllanthaceae | 5 |
| Pilea pubescens | Liebm. | Urticaceae | 5 |
| Plinia edulis | (Vell.) Sobral | Myrtaceae | 5 |
| Pseudabutilon virgatum | (Cav.) Fryxell | Malvaceae | 5 |
| Pseudalbizzia niopoides | (Spruce ex Benth.) E.J.M.Koenen & Duno | Fabaceae | 5 |
| Pseudechinolaena polystachya | (Kunth) Stapf | Poaceae | 5 |
| Pterocaulon purpurascens | Malme | Asteraceae | 5 |
| Ranunculus flagelliformis | Sm. | Ranunculaceae | 5 |
| Rhynchospora rugosa | (Vahl) Gale | Cyperaceae | 5 |
| Sarcomphalus joazeiro | (Mart.) Hauenschild | Rhamnaceae | 5 |
| Senecio leucostachys | Baker | Asteraceae | 5 |
| Senecio pinnatus | Poir. | Asteraceae | 5 |
| Senna birostris | (Dombey ex Vogel) H.S.Irwin & Barneby | Fabaceae | 5 |
| Sida glabra | Mill. | Malvaceae | 5 |
| Solanum malmeanum | Bitter | Solanaceae | 5 |
| Solanum tweedieanum | Hook. | Solanaceae | 5 |
| Sphaeralcea purpurata | (Lindl.) Krapov. | Malvaceae | 5 |
| Sporobolus rigens | (Trin.) É.Desv. | Poaceae | 5 |
| Stigmaphyllon jatrophifolium | A.Juss. | Malpighiaceae | 5 |
| Struthanthus uraguensis | (Hook. & Arn.) G.Don | Loranthaceae | 5 |
| Trichomanes anadromum | Rosenst. | Hymenophyllaceae | 5 |
| Urtica circularis | (Hicken) Sorarú | Urticaceae | 5 |
| Utricularia nervosa | Weber ex Benj. | Lentibulariaceae | 5 |
| Vachellia astringens | (Gillies ex Hook. & Arn.) Speg. | Fabaceae | 5 |
| Verbena gracilescens | (Cham.) Herter | Verbenaceae | 5 |
| Verbena nana | Moldenke | Verbenaceae | 5 |
| Vernonanthura tweedieana | (Baker) H.Rob. | Asteraceae | 5 |
| Vitex cymosa | Bertero ex Spreng. | Lamiaceae | 5 |
| Vriesea procera | (Mart. ex Schult. & Schult.f.) Wittm. | Bromeliaceae | 5 |
| Waltheria communis | A.St.-Hil. | Malvaceae | 5 |
| Abutilon terminale | (Cav.) A.St.-Hil. | Malvaceae | 4 |
| Adenocalymma marginatum | (Cham.) DC. | Bignoniaceae | 4 |
| Adenostemma brasilianum | (Pers.) Cass. | Asteraceae | 4 |
| Agrostis montevidensis | Spreng. ex Nees | Poaceae | 4 |
| Allagoptera campestris | (Mart.) Kuntze | Arecaceae | 4 |
| Amelichloa brachychaeta | (Godr.) Arriaga & Barkworth | Poaceae | 4 |
| Annona emarginata | (Schltdl.) H.Rainer | Annonaceae | 4 |
| Aphelandra longiflora | (Lindl.) Profice | Acanthaceae | 4 |
| Arachis burkartii | Handro | Fabaceae | 4 |
| Aristolochia esperanzae | Kuntze | Aristolochiaceae | 4 |
| Aristolochia stuckertii | Speg. | Aristolochiaceae | 4 |
| Athyrium dombeyi | Desv. | Athyriaceae | 4 |
| Ayenia eliae | Cristóbal | Malvaceae | 4 |
| Baccharis gilliesii | A.Gray | Asteraceae | 4 |
| Baccharis oblongifolia | Pers. | Asteraceae | 4 |
| Bouchea fluminensis | (Vell.) Moldenke | Verbenaceae | 4 |
| Bouteloua simplex | Lag. | Poaceae | 4 |
| Brachyclados lycioides | D.Don | Asteraceae | 4 |
| Campovassouria cruciata | (Vell.) R.M.King & H.Rob. | Asteraceae | 4 |
| Campylocentrum densiflorum | Cogn. | Orchidaceae | 4 |
| Campyloneurum austrobrasilianum | (Alston) de la Sota | Polypodiaceae | 4 |
| Carex brongniartii | Kunth | Cyperaceae | 4 |
| Cenchrus nervosus | (Nees) Kuntze | Poaceae | 4 |
| Cestrum mariquitense | Kunth | Solanaceae | 4 |
| Chaerophyllum andicola | (Kunth) K.F.Chung | Apiaceae | 4 |
| Chaetogastra nitida | (Graham) P.J.F.Guim. & Michelang. | Melastomataceae | 4 |
| Chaptalia runcinata | Kunth | Asteraceae | 4 |
| Chromolaena arnottiana | (Griseb.) R.M.King & H.Rob. | Asteraceae | 4 |
| Chromolaena christieana | (Baker) R.M.King & H.Rob. | Asteraceae | 4 |
| Chromolaena squarrulosa | (Hook. & Arn.) R.M.King & H.Rob. | Asteraceae | 4 |
| Clematis acapulcensis | Hook. & Arn. | Ranunculaceae | 4 |
| Corchorus orinocensis | Kunth | Malvaceae | 4 |
| Corymborkis flava | (Sw.) Kuntze | Orchidaceae | 4 |
| Ctenodon histrix | (Poir.) D.B.O.S.Cardoso, P.L.R.Moraes & H.C.Lima | Fabaceae | 4 |
| Cunila microcephala | Benth. | Lamiaceae | 4 |
| Cypella fucata | Ravenna | Iridaceae | 4 |
| Deinacanthon urbanianum | (Mez) Mez | Bromeliaceae | 4 |
| Desmodium distortum | (Aubl.) J.F.Macbr. | Fabaceae | 4 |
| Epistephium sclerophyllum | Lindl. | Orchidaceae | 4 |
| Eryngium megapotamicum | Malme | Apiaceae | 4 |
| Eryngium mesopotamicum | Pedersen | Apiaceae | 4 |
| Eubrachion ambiguum | (Hook. & Arn.) Engl. | Santalaceae | 4 |
| Fridericia truncata | (Sprague) L.G.Lohmann | Bignoniaceae | 4 |
| Gaga marginata | (Kunth) Fay W.Li & Windham | Pteridaceae | 4 |
| Galianthe fastigiata | Griseb. | Rubiaceae | 4 |
| Gamochaeta simplicicaulis | (Willd. ex Spreng.) Cabrera | Asteraceae | 4 |
| Glechon marifolia | Benth. | Lamiaceae | 4 |
| Grindelia aegialitis | Cabrera | Asteraceae | 4 |
| Grona adscendens | (Sw.) H.Ohashi & K.Ohashi | Fabaceae | 4 |
| Hatschbachiella tweedieana | (Hook. ex Arn.) R.M.King & H.Rob. | Asteraceae | 4 |
| Helanthium tenellum | (Mart. ex Schult.f.) Britton | Alismataceae | 4 |
| Heliotropium transalpinum | Vell. | Heliotropiaceae | 4 |
| Herissantia tiubae | (K.Schum.) Brizicky | Malvaceae | 4 |
| Heteranthera zosterifolia | Mart. | Pontederiaceae | 4 |
| Heteropterys dumetorum | (Griseb.) Nied. | Malpighiaceae | 4 |
| Hordeum muticum | J.Presl | Poaceae | 4 |
| Hypericum caprifoliatum | Cham. & Schltdl. | Hypericaceae | 4 |
| Ipomoea malvaeoides | Meisn. | Convolvulaceae | 4 |
| Isabelia virginalis | Barb.Rodr. | Orchidaceae | 4 |
| Jatropha hieronymi | Kuntze | Euphorbiaceae | 4 |
| Lepidaploa remotiflora | (Rich.) H.Rob. | Asteraceae | 4 |
| Leptotes unicolor | Barb.Rodr. | Orchidaceae | 4 |
| Lippia coarctata | Tronc. | Verbenaceae | 4 |
| Lygodium volubile | Sw. | Lygodiaceae | 4 |
| Lysimachia filiformis | (Cham. & Schltdl.) U.Manns & Anderb. | Primulaceae | 4 |
| Macroptilium arenarium | (Bacig.) S.I.Drewes & R.A.Palacios | Fabaceae | 4 |
| Macroptilium erythroloma | (Mart. ex Benth.) Urb. | Fabaceae | 4 |
| Melica sarmentosa | Nees | Poaceae | 4 |
| Menodora robusta | (Benth.) A.Gray | Oleaceae | 4 |
| Merostachys claussenii | Munro | Poaceae | 4 |
| Miconia cinerascens | Miq. | Melastomataceae | 4 |
| Morisonia retusa | (Griseb.) Christenh. & Byng | Capparaceae | 4 |
| Myracrodruon balansae | (Engl.) Santin | Anacardiaceae | 4 |
| Neltuma ruizlealii | (Burkart) C.E.Hughes & G.P.Lewis | Fabaceae | 4 |
| Neobartsia elongata | (Wedd.) Uribe-Convers & Tank | Orobanchaceae | 4 |
| Nicotiana langsdorffii | Weinm. | Solanaceae | 4 |
| Orthosia urceolata | E.Fourn. | Apocynaceae | 4 |
| Palicourea tenerior | (Cham.) Delprete & J.H.Kirkbr. | Rubiaceae | 4 |
| Pavonia sidifolia | Kunth | Malvaceae | 4 |
| Phoradendron dipterum | Eichler | Santalaceae | 4 |
| Phyllostylon rhamnoides | (J.Poiss.) Taub. | Ulmaceae | 4 |
| Phytolacca tetramera | Hauman | Phytolaccaceae | 4 |
| Plagiocheilus tanacetoides | Haenke ex DC. | Asteraceae | 4 |
| Podocoma hirsuta | Baker | Asteraceae | 4 |
| Porophyllum obscurum | (Spreng.) DC. | Asteraceae | 4 |
| Prosopanche bonacinae | Speg. | Aristolochiaceae | 4 |
| Quechualia fulta | (Griseb.) H.Rob. | Asteraceae | 4 |
| Rotala mexicana | Schltdl. & Cham. | Lythraceae | 4 |
| Rubus imperialis | Cham. & Schltdl. | Rosaceae | 4 |
| Rudgea parquioides | (Cham.) Müll.Arg. | Rubiaceae | 4 |
| Ruprechtia laxiflora | Meisn. | Polygonaceae | 4 |
| Sagittaria guayanensis | Kunth | Alismataceae | 4 |
| Salvinia auriculata | Aubl. | Salviniaceae | 4 |
| Schizachyrium condensatum | (Kunth) Nees | Poaceae | 4 |
| Senecio pulcher | Hook. & Arn. | Asteraceae | 4 |
| Senna subulata | (Griseb.) H.S.Irwin & Barneby | Fabaceae | 4 |
| Setaria macrostachya | Kunth | Poaceae | 4 |
| Sida dubia | A.St.-Hil. & Naudin | Malvaceae | 4 |
| Sidastrum paniculatum | (L.) Fryxell | Malvaceae | 4 |
| Solanum physalidicalyx | Bitter | Solanaceae | 4 |
| Sporobolus coarctatus | (Trin.) P.M.Peterson & Saarela | Poaceae | 4 |
| Steinchisma laxum | (Sw.) Zuloaga | Poaceae | 4 |
| Stenandrium mandioccanum | Nees | Acanthaceae | 4 |
| Strombocarpa reptans | (Benth.) A.Gray | Fabaceae | 4 |
| Styrax leprosus | Hook. & Arn. | Styracaceae | 4 |
| Tanaecium selloi | (Spreng.) L.G.Lohmann | Bignoniaceae | 4 |
| Tillandsia gilliesii | Baker | Bromeliaceae | 4 |
| Tillandsia pohliana | Mez | Bromeliaceae | 4 |
| Tradescantia tucumanensis | M.Pell. | Commelinaceae | 4 |
| Trichilia pallida | Sw. | Meliaceae | 4 |
| Trigonia nivea | Cambess. | Trigoniaceae | 4 |
| Trixis antimenorrhoea | (Schrank) Kuntze | Asteraceae | 4 |
| Urera aurantiaca | Wedd. | Urticaceae | 4 |
| Verbena dissecta | Willd. ex Spreng. | Verbenaceae | 4 |
| Verbena megapotamica | Spreng. | Verbenaceae | 4 |
| Verbesina subcordata | DC. | Asteraceae | 4 |
| Vicia pampicola | Burkart | Fabaceae | 4 |
| Xyris laxifolia | Mart. | Xyridaceae | 4 |
| Aa achalensis | Schltr. | Orchidaceae | 3 |
| Abatia angeliana | M.H.Alford | Salicaceae | 3 |
| Abutilon umbelliflorum | A.St.-Hil. | Malvaceae | 3 |
| Acanthocalycium spiniflorum | (K.Schum.) Backeb. | Cactaceae | 3 |
| Achyrocline flaccida | (Weinm.) DC. | Asteraceae | 3 |
| Acianthera hygrophila | (Barb.Rodr.) Pridgeon & M.W.Chase | Orchidaceae | 3 |
| Adiantum obliquum | Willd. | Pteridaceae | 3 |
| Andropogon tener | (Nees) Kunth | Poaceae | 3 |
| Annona nutans | (R.E.Fr.) R.E.Fr. | Annonaceae | 3 |
| Apodanthera sagittifolia | (Griseb.) Mart.Crov. | Cucurbitaceae | 3 |
| Aristida murina | Cav. | Poaceae | 3 |
| Aristolochia angustifolia | Cham. | Aristolochiaceae | 3 |
| Aspidosperma triternatum | Rojas Acosta | Apocynaceae | 3 |
| Aspilia pascalioides | Griseb. | Asteraceae | 3 |
| Asplenium sellowianum | (Hieron.) Hieron. | Aspleniaceae | 3 |
| Baccharis penningtonii | Heering | Asteraceae | 3 |
| Berroa gnaphalioides | Beauverd | Asteraceae | 3 |
| Bromus berteroanus | Colla | Poaceae | 3 |
| Caiophora cernua | (Griseb.) Urb. & Gilg ex Kurtz | Loasaceae | 3 |
| Calycophyllum multiflorum | Griseb. | Rubiaceae | 3 |
| Calydorea amabilis | (Ravenna) Goldblatt & Henrich | Iridaceae | 3 |
| Campomanesia guaviroba | (DC.) Bertoni | Myrtaceae | 3 |
| Capsicum baccatum | L. | Solanaceae | 3 |
| Carex uruguensis | Boeckeler | Cyperaceae | 3 |
| Cattleya cernua | (Lindl.) Van den Berg | Orchidaceae | 3 |
| Celtis chichape | (Wedd.) Miq. | Cannabaceae | 3 |
| Ceratopteris pteridoides | (Hook.) Hieron. | Pteridaceae | 3 |
| Chaptalia similis | R.E.Fr. | Asteraceae | 3 |
| Chevreulia sarmentosa | (Pers.) S.F.Blake | Asteraceae | 3 |
| Chloroleucon tenuiflorum | (Benth.) Barneby & J.W.Grimes | Fabaceae | 3 |
| Cleome titubans | Speg. | Cleomaceae | 3 |
| Clinopodium gilliesii | (Benth.) Kuntze | Lamiaceae | 3 |
| Corchorus hirtus | L. | Malvaceae | 3 |
| Criscia stricta | (Spreng.) Katinas | Asteraceae | 3 |
| Croton argentinus | Müll.Arg. | Euphorbiaceae | 3 |
| Cyathea atrovirens | (Langsd. & Fisch.) Domin | Cyatheaceae | 3 |
| Cyclanthera hystrix | Arn. | Cucurbitaceae | 3 |
| Cyperus byssaceus | Pereira-Silva | Cyperaceae | 3 |
| Cyperus rigens | J.Presl & C.Presl | Cyperaceae | 3 |
| Dianthera pectoralis | (Jacq.) J.F.Gmel. | Acanthaceae | 3 |
| Dimerostemma aspilioides | (Griseb.) M.D.Moraes | Asteraceae | 3 |
| Diplokeleba floribunda | N.E.Br. | Sapindaceae | 3 |
| Distimake macrocalyx | (Ruiz & Pav.) A.R.Simões & Staples | Convolvulaceae | 3 |
| Dyckia leptostachya | Baker | Bromeliaceae | 3 |
| Echinochloa polystachya | (Kunth) Hitchc. | Poaceae | 3 |
| Erythroxylum cuneifolium | (Mart.) O.E.Schulz | Erythroxylaceae | 3 |
| Eugenia uruguayensis | Cambess. | Myrtaceae | 3 |
| Euphorbia comosa | Vell. | Euphorbiaceae | 3 |
| Eustachys distichophylla | (Lag.) Nees | Poaceae | 3 |
| Galeandra styllomisantha | (Vell.) Hoehne | Orchidaceae | 3 |
| Geranium parodii | I.M.Johnst. | Geraniaceae | 3 |
| Gomesa paranensoides | M.W.Chase & N.H.Williams | Orchidaceae | 3 |
| Gomphrena mendocina | (Phil.) R.E.Fr. | Amaranthaceae | 3 |
| Gorgonidium vermicidum | (Speg.) Bogner & Nicolson | Araceae | 3 |
| Gymnocalycium andreae | (Boed.) Backeb. & F.M.Knuth | Cactaceae | 3 |
| Gymnocalycium reductum | (Link) Pfeiff. ex Mittler | Cactaceae | 3 |
| Gymnocalycium schroederianum | Osten | Cactaceae | 3 |
| Habenaria bractescens | Lindl. | Orchidaceae | 3 |
| Habenaria parviflora | Lindl. | Orchidaceae | 3 |
| Habenaria petalodes | Lindl. | Orchidaceae | 3 |
| Hedeoma multiflora | Benth. | Lamiaceae | 3 |
| Heliotropium paronychioides | A.DC. | Heliotropiaceae | 3 |
| Heterostachys ritteriana | (Moq.) Ung.-Sternb. | Chenopodiaceae | 3 |
| Hypochaeris megapotamica | Cabrera | Asteraceae | 3 |
| Hypochaeris microcephala | (Sch.Bip.) Cabrera | Asteraceae | 3 |
| Indigofera asperifolia | Bong. ex Benth. | Fabaceae | 3 |
| Indigofera parodiana | Burkart | Fabaceae | 3 |
| Ipheion sessile | (Phil.) Traub | Amaryllidaceae | 3 |
| Ipomoea descolei | O'Donell | Convolvulaceae | 3 |
| Jaumea linearifolia | DC. | Asteraceae | 3 |
| Kallstroemia tribuloides | (Mart.) Steud. | Zygophyllaceae | 3 |
| Lathyrus nervosus | Lam. | Fabaceae | 3 |
| Lathyrus subulatus | Lam. | Fabaceae | 3 |
| Lecanophora ameghinoi | (Speg.) Speg. | Malvaceae | 3 |
| Linum burkartii | Mildner | Linaceae | 3 |
| Lucilia nitens | Less. | Asteraceae | 3 |
| Lupinus aureonitens | Gillies ex Hook. & Arn. | Fabaceae | 3 |
| Lupinus heptaphyllus | (Vell.) Hassl. | Fabaceae | 3 |
| Manettia paraguariensis | Chodat | Rubiaceae | 3 |
| Maxillaria paranaensis | Barb.Rodr. | Orchidaceae | 3 |
| Melpomene peruviana | (Desv.) Reider & R.C.Moran | Polypodiaceae | 3 |
| Mikania hemisphaerica | Sch.Bip. ex Baker | Asteraceae | 3 |
| Mikania thapsoides | DC. | Asteraceae | 3 |
| Mimosa scabrella | Benth. | Fabaceae | 3 |
| Mulguraea ligustrina | (Lag.) N.O'Leary & P.Peralta | Verbenaceae | 3 |
| Myracrodruon urundeuva | Allemão | Anacardiaceae | 3 |
| Nama undulata | Kunth | Namaceae | 3 |
| Neltuma elata | (Burkart) C.E.Hughes & G.P.Lewis | Fabaceae | 3 |
| Nicotiana bonariensis | Lehm. | Solanaceae | 3 |
| Nierembergia ericoides | Miers | Solanaceae | 3 |
| Nothoscordum dialystemon | (Guagl.) Crosa | Amaryllidaceae | 3 |
| Nymphaea jamesoniana | Planch. | Nymphaeaceae | 3 |
| Ophioglossum reticulatum | L. | Ophioglossaceae | 3 |
| Oxypetalum macrolepis | (Hook. & Arn.) Decne. | Apocynaceae | 3 |
| Oxypetalum mosenii | (Malme) Malme | Apocynaceae | 3 |
| Panicum urvilleanum | Kunth | Poaceae | 3 |
| Pappostipa humilis | (Cav.) Romasch. | Poaceae | 3 |
| Paspalum malacophyllum | Trin. | Poaceae | 3 |
| Paspalum stellatum | Flüggé | Poaceae | 3 |
| Paullinia meliifolia | Juss. | Sapindaceae | 3 |
| Pavonia betonicifolia | C.Presl | Malvaceae | 3 |
| Pavonia distinguenda | A.St.-Hil. & Naudin | Malvaceae | 3 |
| Pavonia revoluta | Krapov. | Malvaceae | 3 |
| Pavonia xanthogloea | Ekman | Malvaceae | 3 |
| Pelexia bonariensis | (Lindl.) Schltr. | Orchidaceae | 3 |
| Peperomia barbarana | C.DC. | Piperaceae | 3 |
| Peperomia comarapana | C.DC. | Piperaceae | 3 |
| Phacelia artemisioides | Griseb. | Hydrophyllaceae | 3 |
| Phoradendron mucronatum | (DC.) Krug & Urb. | Santalaceae | 3 |
| Pilostyles blanchetii | (Gardner) R.Br. | Apodanthaceae | 3 |
| Piper regnellii | (Miq.) C.DC. | Piperaceae | 3 |
| Plectrocarpa bonariensis | (Griseb.) Christenh. & Byng | Zygophyllaceae | 3 |
| Plectrocarpa sarmientoi | (Lorentz ex Griseb.) Christenh. & Byng | Zygophyllaceae | 3 |
| Portulaca eruca | Hauman | Portulacaceae | 3 |
| Prosopidastrum angusticarpum | R.A.Palacios & Hoc | Fabaceae | 3 |
| Pterocaulon alopecuroides | (Lam.) DC. | Asteraceae | 3 |
| Raulinoreitzia tremula | (Hook. & Arn.) R.M.King & H.Rob. | Asteraceae | 3 |
| Rhynchosia burkartii | Fortunato | Fabaceae | 3 |
| Roupala montana | Aubl. | Proteaceae | 3 |
| Ruehssia macrophylla | (Humb. & Bonpl. ex Schult.) H.Karst. | Apocynaceae | 3 |
| Ruellia geminiflora | Kunth | Acanthaceae | 3 |
| Sacoila argentina | (Griseb.) Garay | Orchidaceae | 3 |
| Sagittaria rhombifolia | Cham. | Alismataceae | 3 |
| Schinus weinmanniifolia | Engl. | Anacardiaceae | 3 |
| Schnella microstachya | Raddi | Fabaceae | 3 |
| Scleria latifolia | Sw. | Cyperaceae | 3 |
| Senecio tweediei | Hook. & Arn. | Asteraceae | 3 |
| Senecio ventanensis | Cabrera | Asteraceae | 3 |
| Sida argentina | K.Schum. | Malvaceae | 3 |
| Sideroxylon obtusifolium | (Roem. & Schult.) T.D.Penn. | Sapotaceae | 3 |
| Sinningia tubiflora | (Hook.) Fritsch | Gesneriaceae | 3 |
| Sisyrinchium scariosum | I.M.Johnst. | Iridaceae | 3 |
| Solanum echegarayi | Hieron. | Solanaceae | 3 |
| Solanum endoadenium | Bitter | Solanaceae | 3 |
| Solanum euacanthum | Phil. | Solanaceae | 3 |
| Solanum palitans | C.V.Morton | Solanaceae | 3 |
| Solanum robustum | H.L.Wendl. | Solanaceae | 3 |
| Solanum uncinellum | Lindl. | Solanaceae | 3 |
| Sorghastrum pellitum | (Hack.) Parodi | Poaceae | 3 |
| Spergularia ramosa | Cambess. | Caryophyllaceae | 3 |
| Stemodia lanceolata | Benth. | Plantaginaceae | 3 |
| Stevia entreriensis | Hieron. | Asteraceae | 3 |
| Stylosanthes hippocampoides | Mohlenbr. | Fabaceae | 3 |
| Thalictrum decipiens | B.Boivin | Ranunculaceae | 3 |
| Tillandsia bergeri | Mez | Bromeliaceae | 3 |
| Tillandsia retorta | Griseb. ex Baker | Bromeliaceae | 3 |
| Turnera orientalis | (Urb.) Arbo | Passifloraceae | 3 |
| Utricularia myriocista | A.St.-Hil. & Girard | Lentibulariaceae | 3 |
| Zephyranthes filifolia | Kraenzl. | Amaryllidaceae | 3 |
| Zygostigma australe | (Cham. & Schltdl.) Griseb. | Gentianaceae | 3 |
Abildgaardia ovataflatspike sedge
Abutilon grandifoliumhairy Indian mallow
Acaena ovalifolia
Acaena pinnatifidaArgentinian biddy-biddy
Acalypha communis
Acalypha herzogiana
Acalypha poiretiiPoiret's copperleaf
Acanthocalycium rhodotrichum
Acanthospermum australeParaguayan starbur
Acanthospermum hispidumhispid starbur
Acanthostachys strobilacea
Acanthostyles buniifolius
Acanthosyris falcata
Acanthosyris spinescens
Acianthera pubescenshairy bonnet orchid
Acianthera sonderiana
Acicarpha tribuloidesmadam gorgon
Acmella decumbenscreeping spotflower
Acrocomia totaigrugru palm
Acrostichum danaeifoliuminland leatherfern
Adenaria floribunda
Adesmia corymbosa
Adesmia incana
Adiantopsis chlorophylla
Adiantopsis radiata
Adiantum chilense
Adiantum latifoliumbroadleaf maidenhair
Adiantum lorentzii
Adiantum macrophyllumlargeleaf maidenhair
Adiantum poiretii
Adiantum raddianumdelta maidenhair
Aechmea bromeliifolia
Aechmea calyculata
Aechmea distichantha
Aechmea recurvata
Aegiphila verticillata
Aeschynomene americanashyleaf
Aeschynomene montevidensis
Agalinis communis
Agalinis genistifolia
Agrostis perennansupland bentgrass
Allenrolfea patagonica
Allenrolfea vaginata
Allionia choisyiannual windmills
Allionia incarnataTrailing Windmills
Allophylus edulis
Allophylus guaraniticus
Allophylus laevigatus
