| Abildgaardia ovata | (Burm.f.) Kral | Cyperaceae | 8 |
| Abutilon grandifolium | (Willd.) Sweet | Malvaceae | 8 |
| Acalypha communis | Müll.Arg. | Euphorbiaceae | 8 |
| Acanthocalycium rhodotrichum | (K.Schum.) Schlumpb. | Cactaceae | 8 |
| Acanthospermum australe | (Loefl.) Kuntze | Asteraceae | 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 |
| Adesmia incana | Vogel | Fabaceae | 8 |
| Adiantopsis chlorophylla | (Sw.) Fée | Pteridaceae | 8 |
| Adiantum poiretii | Wikstr. | Pteridaceae | 8 |
| Adiantum raddianum | C.Presl | Pteridaceae | 8 |
| Aechmea distichantha | Lem. | Bromeliaceae | 8 |
| Aechmea recurvata | (Klotzsch) L.B.Sm. | Bromeliaceae | 8 |
| Aeschynomene montevidensis | Vogel | Fabaceae | 8 |
| Agalinis communis | (Cham. & Schltdl.) D'Arcy | Orobanchaceae | 8 |
| Agalinis genistifolia | (Cham. & Schltdl.) D'Arcy | Orobanchaceae | 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 |
| Aloysia gratissima | (Gillies & Hook.) Tronc. | Verbenaceae | 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 viridis | L. | Amaranthaceae | 8 |
| Amauropelta argentina | (Hieron.) Salino & T.E.Almeida | Thelypteridaceae | 8 |
| Ambrosia tenuifolia | Spreng. | Asteraceae | 8 |
| Ammannia auriculata | Willd. | Lythraceae | 8 |
| Amphilophium carolinae | (Lindl.) L.G.Lohmann | Bignoniaceae | 8 |
| Amphilophium crucigerum | (L.) L.G.Lohmann | Bignoniaceae | 8 |
| Anchietea pyrifolia | (Mart.) G.Don | Violaceae | 8 |
| Anemia phyllitidis | (L.) Sw. | Anemiaceae | 8 |
| Anemia tomentosa | (Savigny) Sw. | Anemiaceae | 8 |
| Anemone decapetala | Ard. | Ranunculaceae | 8 |
| Angelonia integerrima | Spreng. | Plantaginaceae | 8 |
| Anoda cristata | (L.) Schltdl. | Malvaceae | 8 |
| Anredera cordifolia | (Ten.) Steenis | Basellaceae | 8 |
| Apium prostratum | Labill. ex Vent. | Apiaceae | 8 |
| Aquarius grandiflorus | (Cham. & Schltdl.) Christenh. & Byng | Alismataceae | 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 |
| Argemone subfusiformis | Ownbey | Papaveraceae | 8 |
| Aristolochia fimbriata | Cham. | Aristolochiaceae | 8 |
| Aristolochia triangularis | Cham. | Aristolochiaceae | 8 |
| Asclepias mellodora | A.St.-Hil. | Apocynaceae | 8 |
| Aspidosperma quebracho-blanco | Schltdl. | Apocynaceae | 8 |
| Asplenium monanthes | L. | Aspleniaceae | 8 |
| Asplenium resiliens | Kunze | Aspleniaceae | 8 |
| Asplenium serra | Langsd. & Fisch. | Aspleniaceae | 8 |
| Aster squamatus | (Spreng.) Hieron. | Asteraceae | 8 |
| Avenella flexuosa | (L.) Drejer | Poaceae | 8 |
| Avicennia schaueriana | Stapf & Leechm. ex Moldenke | Acanthaceae | 8 |
| Axonopus compressus | (Sw.) P.Beauv. | Poaceae | 8 |
| Axonopus fissifolius | (Raddi) Kuhlm. | Poaceae | 8 |
| Ayenia urticifolia | (K.Schum.) Christenh. & Byng | Malvaceae | 8 |
| Azolla filiculoides | Lam. | Salviniaceae | 8 |
| Baccharis aliena | (Spreng.) Joch.Müll. | Asteraceae | 8 |
| Baccharis anomala | DC. | 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 patens | Baker | Asteraceae | 8 |
| Baccharis phyteumoides | DC. | Asteraceae | 8 |
| Baccharis punctulata | DC. | Asteraceae | 8 |
| Baccharis sagittalis | DC. | Asteraceae | 8 |
| Baccharis salicifolia | (Ruiz & Pav.) Pers. | Asteraceae | 8 |
| Baccharis spicata | (Lam.) Baill. | Asteraceae | 8 |
| Baccharis vulneraria | Baker | Asteraceae | 8 |
| Bacopa monnieri | (L.) Wettst. | Plantaginaceae | 8 |
| Bauhinia forficata | Link | Fabaceae | 8 |
| Begonia cucullata | Willd. | Begoniaceae | 8 |
| Berberis laurina | Thunb. | 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 |
| Bignonia callistegioides | Cham. | Bignoniaceae | 8 |
| Billbergia nutans | H.Wendl. ex Regel | Bromeliaceae | 8 |
| Bipinnula penicillata | (Rchb.f.) Cisternas & Salazar | Orchidaceae | 8 |
| Blepharocalyx salicifolius | (Kunth) O.Berg | Myrtaceae | 8 |
| Blumenbachia insignis | Schrad. | Loasaceae | 8 |
| Boehmeria cylindrica | (L.) Sw. | Urticaceae | 8 |
| Boerhavia diffusa | L. | Nyctaginaceae | 8 |
| Bolboschoenus robustus | (Pursh) Soják | Cyperaceae | 8 |
| Bothriochloa barbinodis | (Lag.) Herter | Poaceae | 8 |
| Bothriochloa laguroides | (DC.) Herter | Poaceae | 8 |
| Bothriochloa torreyana | (Steud.) Scrivanti & Anton | Poaceae | 8 |
| Botrypus virginianus | (L.) Michx. | Ophioglossaceae | 8 |
| Bouchetia anomala | (Miers) Britton & Rusby | Solanaceae | 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 |
| Bromelia antiacantha | Bertol. | Bromeliaceae | 8 |
| Bromus catharticus | Vahl | Poaceae | 8 |
| Brunfelsia australis | Benth. | Solanaceae | 8 |
| Buchnera pusilla | Kunth | Orobanchaceae | 8 |
| Buddleja stachyoides | Cham. & Schltdl. | Scrophulariaceae | 8 |
| Butia odorata | (Barb.Rodr.) Noblick | Arecaceae | 8 |
| Butia yatay | (Mart.) Becc. | Arecaceae | 8 |
| Cabomba caroliniana | A.Gray | Cabombaceae | 8 |
| Calceolaria parviflora | Gillies ex Benth. | 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 |
| Callitriche heterophylla | Pursh | Plantaginaceae | 8 |
| Calycera crassifolia | (Miers) Hicken | Calyceraceae | 8 |
| Calydorea charruana | Deble | Iridaceae | 8 |
| Calyptocarpus brasiliensis | (Nees & Mart.) B.L.Turner | Asteraceae | 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 |
| 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 |
| Cardiospermum grandiflorum | Sw. | Sapindaceae | 8 |
| Cardiospermum halicacabum | L. | Sapindaceae | 8 |
| Carex aureolensis | Steud. | Cyperaceae | 8 |
| Casearia decandra | Jacq. | Salicaceae | 8 |
| Casearia sylvestris | Sw. | Salicaceae | 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 |
| Cedrela fissilis | Vell. | Meliaceae | 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 |
| Centrosema virginianum | (L.) Benth. | Fabaceae | 8 |
| Cephalanthus glabratus | (Spreng.) K.Schum. | Rubiaceae | 8 |
| Ceratophyllum demersum | L. | Ceratophyllaceae | 8 |
| Cereus aethiops | Haw. | Cactaceae | 8 |
| Cereus hildmannianus | K.Schum. | Cactaceae | 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 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 |
| Chenopodium retusum | (Moq.) Juss. ex Moq. | Chenopodiaceae | 8 |
| Chiropetalum griseum | Griseb. | Euphorbiaceae | 8 |
| Chloraea membranacea | Lindl. | Orchidaceae | 8 |
| Chromolaena hirsuta | (Hook. & Arn.) R.M.King & H.Rob. | Asteraceae | 8 |
| Chromolaena laevigata | (Lam.) R.M.King & H.Rob. | Asteraceae | 8 |
| Chrysolaena flexuosa | (Sims) H.Rob. | Asteraceae | 8 |
| Cicendia quadrangularis | (Lam.) Griseb. | Gentianaceae | 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 |
| 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 |
| Cochliasanthus caracalla | (L.) Trew | Fabaceae | 8 |
| Coleataenia prionitis | (Nees) Soreng | Poaceae | 8 |
| Colletia paradoxa | (Spreng.) Escal. | Rhamnaceae | 8 |
| Colletia spinosissima | J.F.Gmel. | Rhamnaceae | 8 |
| Combretum fruticosum | (Loefl.) Stuntz | Combretaceae | 8 |
| Commelina erecta | L. | Commelinaceae | 8 |
| Convolvulus bonariensis | Cav. | Convolvulaceae | 8 |
| Convolvulus crenatifolius | Ruiz & Pav. | Convolvulaceae | 8 |
| Convolvulus hermanniae | L'Hér. | Convolvulaceae | 8 |
| Cortaderia selloana | (Schult. & Schult.f.) Asch. & Graebn. | Poaceae | 8 |
| Craniolaria integrifolia | Cham. | Martyniaceae | 8 |
| Crassula connata | A.Berger | Crassulaceae | 8 |
| Cressa truxillensis | Kunth | Convolvulaceae | 8 |
| Crotalaria incana | L. | Fabaceae | 8 |
| Crotalaria micans | Link | Fabaceae | 8 |
| Croton bonplandianus | Baill. | Euphorbiaceae | 8 |
| Croton lanatus | Lam. | Euphorbiaceae | 8 |
| Croton subpannosus | Griseb. | Euphorbiaceae | 8 |
| Croton urucurana | Baill. | Euphorbiaceae | 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 |
| 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 herbertii | (Lindl.) Herb. | Iridaceae | 8 |
| Cyperus aggregatus | (Willd.) Endl. | Cyperaceae | 8 |
| Cyperus articulatus | L. | 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 giganteus | Vahl | Cyperaceae | 8 |
| Cyperus lanceolatus | Poir. | Cyperaceae | 8 |
| Cyperus luzulae | (L.) Retz. | Cyperaceae | 8 |
| Cyperus meyenianus | Kunth | Cyperaceae | 8 |
| Cyperus odoratus | L. | Cyperaceae | 8 |
| Cyperus polystachyos | Rottb. | Cyperaceae | 8 |
| Cyperus prolixus | 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 |
| Dalechampia scandens | L. | Euphorbiaceae | 8 |
| Daphnopsis racemosa | Griseb. | Thymelaeaceae | 8 |
| Daucus pusillus | Michx. | Apiaceae | 8 |
| Descurainia erodiifolia | (Phil.) Reiche | Brassicaceae | 8 |
| Desmanthus acuminatus | Benth. | Fabaceae | 8 |
| Desmanthus pernambucanus | (L.) Thell. | Fabaceae | 8 |
| Desmanthus virgatus | (L.) Willd. | Fabaceae | 8 |
| Desmodium incanum | (Sw.) DC. | Fabaceae | 8 |
| Desmodium uncinatum | (Jacq.) DC. | Fabaceae | 8 |
| Dianthera comata | L. | Acanthaceae | 8 |
| Dichondra microcalyx | (Hallier f.) Fabris | Convolvulaceae | 8 |
| Dichondra sericea | Sw. | Convolvulaceae | 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 |
| Discaria americana | Gillies & Hook. | Rhamnaceae | 8 |
| Distichlis spicata | (L.) Greene | Poaceae | 8 |
| Distimake dissectus | (Jacq.) A.R.Simões & Staples | Convolvulaceae | 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 capillaris | Poir. | Droseraceae | 8 |
| Dysphania ambrosioides | (L.) Mosyakin & Clemants | Chenopodiaceae | 8 |
| Dysphania multifida | (L.) Mosyakin & Clemants | Chenopodiaceae | 8 |
| Echinopsis oxygona | (Link) Zucc. ex Pfeiff. | Cactaceae | 8 |
| Eclipta elliptica | DC. | Asteraceae | 8 |
| Eclipta prostrata | (L.) L. | Asteraceae | 8 |
| Elaphoglossum gayanum | (Fée) T.Moore | Dryopteridaceae | 8 |
| Elatine brachysperma | A.Gray | Elatinaceae | 8 |
| Eleocharis elegans | (Kunth) Roem. & Schult. | Cyperaceae | 8 |
| Eleocharis macrostachya | Britton | Cyperaceae | 8 |
| Eleocharis montana | (Kunth) Roem. & Schult. | Cyperaceae | 8 |
| Eleocharis montevidensis | Kunth | Cyperaceae | 8 |
| Elephantopus mollis | Kunth | Asteraceae | 8 |
| Eleusine tristachya | (Lam.) Lam. | Poaceae | 8 |
| Elionurus muticus | (Spreng.) Kuntze | Poaceae | 8 |
| Elodea densa | (Planch.) Casp. | Hydrocharitaceae | 8 |
| Enterolobium contortisiliquum | (Vell.) Morong | Fabaceae | 8 |
| Enydra sessilis | DC. | Asteraceae | 8 |
| Ephedra tweedieana | C.A.Mey. | Ephedraceae | 8 |
| Epilobium hirtigerum | A.Cunn. | Onagraceae | 8 |
| Epiphyllum phyllanthus | (L.) Haw. | Cactaceae | 8 |
| Equisetum giganteum | L. | Equisetaceae | 8 |
| Eragrostis hypnoides | (Lam.) Britton, Sterns & Poggenb. | Poaceae | 8 |
| Erechtites hieraciifolius | (L.) Raf. ex DC. | Asteraceae | 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 |
| 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 sanguisorba | Cham. & Schltdl. | Apiaceae | 8 |
| Eryngium serra | Cham. & Schltdl. | Apiaceae | 8 |
| Erythrina crista-galli | L. | Fabaceae | 8 |
| Erythrostemon gilliesii | (Hook.) Klotzsch | Fabaceae | 8 |
| Escallonia bifida | Link & Otto | Escalloniaceae | 8 |
| Eugenia involucrata | DC. | Myrtaceae | 8 |
| Eugenia myrcianthes | Nied. | Myrtaceae | 8 |
| Eugenia uniflora | L. | Myrtaceae | 8 |
| Euphorbia heterophylla | L. | Euphorbiaceae | 8 |
| Euphorbia hypericifolia | L. | Euphorbiaceae | 8 |
| Euphorbia hyssopifolia | L. | Euphorbiaceae | 8 |
| Euphorbia portulacoides | L. | Euphorbiaceae | 8 |
| Euphorbia potentilloides | Boiss. | Euphorbiaceae | 8 |
| Euphorbia serpens | Kunth | Euphorbiaceae | 8 |
| Euploca procumbens | (Mill.) Diane & Hilger | Heliotropiaceae | 8 |
| Eustachys caribaea | (Spreng.) Herter | Poaceae | 8 |
| Eustachys petraea | (Sw.) Desv. | Poaceae | 8 |
| Evolvulus alsinoides | (L.) L. | Convolvulaceae | 8 |
| Evolvulus arizonicus | A.Gray | Convolvulaceae | 8 |
| Evolvulus sericeus | Sw. | Convolvulaceae | 8 |
| Exostigma notobellidiastrum | (Griseb.) G.Sancho | Asteraceae | 8 |
| Facelis retusa | (Lam.) Sch.Bip. | Asteraceae | 8 |
| Feijoa sellowiana | (O.Berg) O.Berg | Myrtaceae | 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 |
| Flaveria bidentis | (L.) Kuntze | Asteraceae | 8 |
| Funastrum clausum | (Jacq.) Schltr. | Apocynaceae | 8 |
| Gaillardia megapotamica | Baker | Asteraceae | 8 |
| Galactia striata | (Jacq.) Urb. | Fabaceae | 8 |
| Galianthe brasiliensis | (Spreng.) E.L.Cabral & Bacigalupo | Rubiaceae | 8 |
| Galinsoga parviflora | Cav. | 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 |
| Gamochaeta purpurea | (L.) Cabrera | Asteraceae | 8 |
| Geoffroea decorticans | (Gillies ex Hook. & Arn.) Burkart | Fabaceae | 8 |
| Gilia laciniata | Ruiz & Pav. | Polemoniaceae | 8 |
| Gleditsia amorphoides | (Griseb.) Taub. | Fabaceae | 8 |
| Gleichenella pectinata | (Willd.) Ching | Gleicheniaceae | 8 |
| Glinus radiatus | (Ruiz & Pav.) Rohrb. | Molluginaceae | 8 |
| Gomesa bifolia | (Sims) M.W.Chase & N.H.Williams | Orchidaceae | 8 |
| Gomphrena celosioides | Mart. | Amaranthaceae | 8 |
| Gomphrena elegans | Mart. | Amaranthaceae | 8 |
| Gomphrena perennis | L. | Amaranthaceae | 8 |
| Gomphrena pulchella | Mart. | Amaranthaceae | 8 |
| Gratiola peruviana | L. | Plantaginaceae | 8 |
| Grazielia serrata | (Spreng.) R.M.King & H.Rob. | Asteraceae | 8 |
| Grindelia pulchella | Dunal | Asteraceae | 8 |
| Grindelia scorzonerifolia | Hook. & Arn. | Asteraceae | 8 |
| Guadua trinii | (Nees) Rupr. | Poaceae | 8 |
| Guettarda uruguensis | Cham. & Schltdl. | Rubiaceae | 8 |
| Gymnocoronis spilanthoides | DC. | Asteraceae | 8 |
| Habenaria gourlieana | Gillies ex Lindl. | Orchidaceae | 8 |
| Habenaria repens | Nutt. | Orchidaceae | 8 |
| Habranthus gracilifolius | Herb. | Amaryllidaceae | 8 |
| Habranthus robustus | Herb. | Amaryllidaceae | 8 |
| Habranthus tubispathus | (L'Hér.) Traub | Amaryllidaceae | 8 |
| Halerpestes cymbalaria | Greene | Ranunculaceae | 8 |
| Harrisia tortuosa | (J.Forbes) Britton & Rose | Cactaceae | 8 |
| Heimia salicifolia | Link | Lythraceae | 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 |
| Herbertia lahue | (Molina) Goldblatt | Iridaceae | 8 |
| Herbertia pulchella | Sweet | Iridaceae | 8 |
| Heteropterys glabra | Hook. & Arn. | Malpighiaceae | 8 |
| Hibiscus striatus | Cav. | Malvaceae | 8 |
| Hippeastrum petiolatum | Pax | Amaryllidaceae | 8 |
| Holocheilus hieracioides | (D.Don) Cabrera | Asteraceae | 8 |
| Hydrocharis laevigata | (Humb. & Bonpl. ex Willd.) Byng & Christenh. | Hydrocharitaceae | 8 |
| Hydrocotyle bonariensis | Comm. ex Lam. | 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 |
| Hyptis lappacea | Benth. | Lamiaceae | 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 uraguensis | Hook. & Arn. | Fabaceae | 8 |
| Ipheion uniflorum | (Graham) Raf. | Amaryllidaceae | 8 |
| Ipomoea alba | L. | Convolvulaceae | 8 |
| Ipomoea grandifolia | (Dammer) 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 purpurea | (L.) Roth | Convolvulaceae | 8 |
| Iresine diffusa | Humb. & Bonpl. ex Willd. | Amaranthaceae | 8 |
| Isolepis cernua | (Vahl) Roem. & Schult. | Cyperaceae | 8 |
| Jaborosa integrifolia | Lam. | Solanaceae | 8 |
| Jaborosa runcinata | Lam. | Solanaceae | 8 |
| Jaegeria hirta | (Lag.) Less. | Asteraceae | 8 |
| Janusia guaranitica | (A.St.-Hil.) A.Juss. | Malpighiaceae | 8 |
| Jatropha curcas | L. | 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 kraussii | Hochst. | Juncaceae | 8 |
| Juncus microcephalus | Kunth | Juncaceae | 8 |
| Jungia floribunda | Less. | Asteraceae | 8 |
| Justicia brasiliana | Roth | Acanthaceae | 8 |
| Krapovickasia flavescens | (Cav.) Fryxell | Malvaceae | 8 |
| Labatia gardneriana | (A.DC.) Alves-Araújo | Sapotaceae | 8 |
| Labatia salicifolia | Mart. | Sapotaceae | 8 |
| Lantana fucata | Lindl. | Verbenaceae | 8 |
| Lantana grisebachii | Stuck. ex Seckt | Verbenaceae | 8 |
| Lantana horrida | Kunth | Verbenaceae | 8 |
| Lantana montevidensis | (Spreng.) Briq. | Verbenaceae | 8 |
| Lathyrus magellanicus | Lam. | Fabaceae | 8 |
| Leersia hexandra | Sw. | Poaceae | 8 |
| Lemna gibba | L. | Araceae | 8 |
| Lemna minuta | Kunth | Araceae | 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 |
| Leptospron adenanthum | (G.Mey.) A.Delgado | Fabaceae | 8 |
| Lepuropetalon spathulatum | Elliott | Celastraceae | 8 |
| Lessingianthus rubricaulis | (Humb. & Bonpl.) H.Rob. | Asteraceae | 8 |
| Ligaria cuneifolia | (Ruiz & Pav.) Tiegh. | Loranthaceae | 8 |
| Lilaeopsis carolinensis | J.M.Coult. & Rose | Apiaceae | 8 |
| Limonium brasiliense | (Boiss.) Kuntze | Plumbaginaceae | 8 |
| Lindernia dubia | (L.) Pennell | Linderniaceae | 8 |
| Lippia alba | (Mill.) N.E.Br. ex Britton & P.Wilson | Verbenaceae | 8 |
| Lithraea brasiliensis | Marchand | Anacardiaceae | 8 |
| Lithraea molleoides | (Vell.) Engl. | Anacardiaceae | 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 leptocarpa | (Nutt.) H.Hara | Onagraceae | 8 |
| Ludwigia longifolia | (DC.) H.Hara | Onagraceae | 8 |
| Ludwigia major | (Micheli) Ramamoorthy | Onagraceae | 8 |
| Ludwigia multinervia | (Hook. & Arn.) Ramamoorthy | 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 |
| Lycium boerhaviifolium | L.f. | Solanaceae | 8 |
| Lycium cestroides | Schltdl. | Solanaceae | 8 |
| Lycium vimineum | Miers | Solanaceae | 8 |
| Lycopodiella alopecuroides | (L.) Cranfill | Lycopodiaceae | 8 |
| Lysimachia amoena | (Sol. ex Gaertn.) Hassemer, Funez & R.Trevis. | Primulaceae | 8 |
| Lythrum maritimum | Kunth | Lythraceae | 8 |
| Macroptilium lathyroides | (L.) Urb. | Fabaceae | 8 |
| Macroptilium prostratum | (Benth.) Urb. | Fabaceae | 8 |
| Malvastrum coromandelianum | (L.) Garcke | Malvaceae | 8 |
| Malvella leprosa | (Ortega) Krapov. | Malvaceae | 8 |
| Mandevilla coccinea | Woodson | Apocynaceae | 8 |
| Mandevilla petraea | (A.St.-Hil.) Pichon | Apocynaceae | 8 |
| Manettia cordifolia | Mart. | Rubiaceae | 8 |
| Manihot grahamii | Hook. | Euphorbiaceae | 8 |
| Margyricarpus pinnatus | (Lam.) Kuntze | Rosaceae | 8 |
| Mayaca fluviatilis | Aubl. | Mayacaceae | 8 |
| Mayaca sellowiana | Kunth | Mayacaceae | 8 |
| Maytenus ilicifolia | Mart. ex Reissek | 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 |
| Menodora integrifolia | (Cham. & Schltdl.) Steud. | Oleaceae | 8 |
| Mentzelia albescens | (Gillies ex Arn.) Benth. & Hook.f. ex Griseb. | Loasaceae | 8 |
| Miconia australis | (Cham.) R.Goldenb. | Melastomataceae | 8 |
| Miconia hyemalis | A.St.-Hil. & Naudin ex Naudin | 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 |
| Mikania cordifolia | (L.f.) Willd. | Asteraceae | 8 |
| Mikania micrantha | Kunth | Asteraceae | 8 |
| Mikania periplocifolia | Hook. & Arn. | Asteraceae | 8 |
| Mimosa bimucronata | (DC.) Kuntze | 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 |
| 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 wrightii | A.Gray | Polygalaceae | 8 |
| Montia fontana | L. | Montiaceae | 8 |
| Muehlenbeckia sagittifolia | (Ortega) Meisn. | Polygonaceae | 8 |
| Muhlenbergia schreberi | J.F.Gmel. | Poaceae | 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 |
| 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 |
| 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 |
| Myrsine parvifolia | A.DC. | Primulaceae | 8 |
| Najas guadalupensis | (Spreng.) Magnus | Hydrocharitaceae | 8 |
| Nanogalactia heterophylla | (Gillies ex Hook.) L.P.Queiroz | Fabaceae | 8 |
| Nassella neesiana | (Trin. & Rupr.) 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 nigra | (Griseb.) C.E.Hughes & G.P.Lewis | Fabaceae | 8 |
| Neoblechnum brasiliense | (Desv.) Gasper & V.A.O.Dittrich | Blechnaceae | 8 |
| Neptunia pubescens | Benth. | Fabaceae | 8 |
| Nicotiana alata | Link & Otto | Solanaceae | 8 |
| Nicotiana glauca | Graham | Solanaceae | 8 |
| Nicotiana longiflora | Cav. | Solanaceae | 8 |
| Nierembergia aristata | D.Don | Solanaceae | 8 |
| Nierembergia calycina | Hook. | Solanaceae | 8 |
| Nierembergia linariifolia | Graham | Solanaceae | 8 |
| Nierembergia rivularis | Miers | Solanaceae | 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 |
| 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 rosea | Aiton | Onagraceae | 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 monacantha | (Willd.) Haw. | Cactaceae | 8 |
| Opuntia retrorsa | Speg. | Cactaceae | 8 |
| Opuntia sulphurea | Gillies ex Salm-Dyck | Cactaceae | 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 hispidula | Zucc. | Oxalidaceae | 8 |
| Oxalis niederleinii | R.Knuth | Oxalidaceae | 8 |
| Oxalis perdicaria | (Molina) Bertero | Oxalidaceae | 8 |
| Oxalis sellowiana | Zucc. | Oxalidaceae | 8 |
| Oxypetalum arnottianum | H.Buek | Apocynaceae | 8 |
| Oxypetalum coccineum | Griseb. | Apocynaceae | 8 |
| Oxypetalum solanoides | Hook. & Arn. | Apocynaceae | 8 |
| Palhinhaea cernua | (L.) Vasc. & Franco | Lycopodiaceae | 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 |
| Parapiptadenia rigida | (Benth.) Brenan | Fabaceae | 8 |
| Parietaria floridana | Nutt. | Urticaceae | 8 |
| Parkinsonia aculeata | L. | Fabaceae | 8 |
| Parodia mammulosa | (Lem.) N.P.Taylor | Cactaceae | 8 |
| Parodia ottonis | (Lehm.) N.P.Taylor | Cactaceae | 8 |
| Parodia scopa | (Spreng.) N.P.Taylor | Cactaceae | 8 |
| Parthenium hysterophorus | L. | Asteraceae | 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 capsularis | L. | Passifloraceae | 8 |
| Passiflora foetida | L. | Passifloraceae | 8 |
| Passiflora misera | Kunth | Passifloraceae | 8 |
| Passiflora suberosa | L. | Passifloraceae | 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 |
| Peltophorum dubium | (Spreng.) Taub. | Fabaceae | 8 |
| Peperomia catharinae | Miq. | Piperaceae | 8 |
| Peperomia increscens | Miq. | Piperaceae | 8 |
| Peperomia tetraphylla | (G.Forst.) Hook. & Arn. | Piperaceae | 8 |
| Perezia multiflora | (Bonpl.) 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 |
| Pharus lappulaceus | Aubl. | Poaceae | 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 dioica | L. | Phytolaccaceae | 8 |
| Picradeniopsis multiflora | (Hook. & Arn.) B.G.Baldwin | Asteraceae | 8 |
| Picrosia longifolia | D.Don | Asteraceae | 8 |
| Pilularia americana | A.Br. | Marsileaceae | 8 |
| Pistia stratiotes | L. | Araceae | 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 tomentosa | Lam. | Plantaginaceae | 8 |
| Pleopeltis hirsutissima | (Raddi) de la Sota | Polypodiaceae | 8 |
| Pleopeltis lepidopteris | (Langsd. & Fisch.) 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 |
| Podocoma hieraciifolia | (Poir.) Cass. | Asteraceae | 8 |
| Poikilacanthus glandulosus | (Nees) Ariza | Acanthaceae | 8 |
| Poikilacanthus tweedieanus | (Nees) Lindau | Acanthaceae | 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 |
| Potamogeton illinoensis | Morong | Potamogetonaceae | 8 |
| Potamogeton pusillus | L. | Potamogetonaceae | 8 |
| Pristimera celastroides | (Kunth) A.C.Sm. | Celastraceae | 8 |
| Proserpinaca palustris | L. | Haloragaceae | 8 |
| Pseudalbizzia inundata | (Mart.) E.J.M.Koenen & Duno | Fabaceae | 8 |
| Pseudognaphalium gaudichaudianum | (DC.) Anderb. | Asteraceae | 8 |
| Psidium cattleyanum | Sabine | Myrtaceae | 8 |
| Psidium salutare | (Kunth) O.Berg | Myrtaceae | 8 |
| Psilotum nudum | (L.) P.Beauv. | Psilotaceae | 8 |
| Psychotria carthagenensis | Jacq. | Rubiaceae | 8 |
| Pteridium esculentum | (G.Forst.) Cockayne | Dennstaedtiaceae | 8 |
| Pteris deflexa | Link | Pteridaceae | 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 |
| Quillaja lancifolia | D.Don | Quillajaceae | 8 |
| Ranunculus apiifolius | Pers. | Ranunculaceae | 8 |
| Ranunculus platensis | Spreng. | Ranunculaceae | 8 |
| Rhipsalis floccosa | Salm-Dyck ex Pfeiff. | Cactaceae | 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 |
| 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 |
| Ruellia angustiflora | (Nees) Lindau ex Rambo | Acanthaceae | 8 |
| Ruellia morongii | Britton | Acanthaceae | 8 |
| Ruellia simplex | C.Wright | Acanthaceae | 8 |
| Rumohra adiantiformis | (G.Forst.) Ching | Dryopteridaceae | 8 |
| Ruprechtia salicifolia | (Cham. & Schltdl.) C.A.Mey. | Polygonaceae | 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 |
| Salpichroa origanifolia | (Lam.) Baill. | Solanaceae | 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 |
| Sambucus australis | Cham. & Schltdl. | Viburnaceae | 8 |
| Samolus parviflorus | Raf. | Primulaceae | 8 |
| Sapium glandulosum | (L.) Morong | Euphorbiaceae | 8 |
| Sapium haematospermum | Müll.Arg. | Euphorbiaceae | 8 |
| Schaefferia argentinensis | Speg. | Celastraceae | 8 |
| Schinus engleri | F.A.Barkley | Anacardiaceae | 8 |
| Schinus johnstonii | F.A.Barkley | Anacardiaceae | 8 |
| Schinus longifolia | Speg. | Anacardiaceae | 8 |
| Schinus molle | L. | 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 |
| Schoenus nigricans | L. | Cyperaceae | 8 |
| Scleria distans | Poir. | 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 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 heterotrichius | DC. | Asteraceae | 8 |
| Senecio icoglossus | DC. | Asteraceae | 8 |
| Senecio platensis | Arechav. | Asteraceae | 8 |
| Senecio selloi | DC. | 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 corymbosa | (Lam.) H.S.Irwin & Barneby | Fabaceae | 8 |
| Senna hirsuta | (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 |
| Serjania meridionalis | Cambess. | Sapindaceae | 8 |
| Sesbania punicea | (Cav.) Benth. | Fabaceae | 8 |
| Sesbania virgata | (Cav.) Poir. | Fabaceae | 8 |
| Sesuvium portulacastrum | (L.) L. | Aizoaceae | 8 |
| Setaria parviflora | (Poir.) Kerguélen | Poaceae | 8 |
| Sicyos malvifolius | Griseb. | Cucurbitaceae | 8 |
| Sida cordifolia | L. | Malvaceae | 8 |
| Sida spinosa | L. | Malvaceae | 8 |
| Sinningia allagophylla | (Mart.) Wiehler | Gesneriaceae | 8 |
| Sinningia sellovii | (Mart.) Wiehler | Gesneriaceae | 8 |
| Siphocampylus verticillatus | (Cham.) G.Don | Campanulaceae | 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 atropurpureum | Schrank | Solanaceae | 8 |
| Solanum bonariense | L. | Solanaceae | 8 |
| Solanum chacoense | Bitter | Solanaceae | 8 |
| Solanum chenopodioides | Lam. | Solanaceae | 8 |
| Solanum commersonii | Poir. | Solanaceae | 8 |
| Solanum elaeagnifolium | Cav. | Solanaceae | 8 |
| Solanum glaucophyllum | Desf. | Solanaceae | 8 |
| Solanum juvenale | Thell. | Solanaceae | 8 |
| Solanum laxum | Spreng. | Solanaceae | 8 |
| Solanum mauritianum | Scop. | Solanaceae | 8 |
| Solanum pseudocapsicum | L. | Solanaceae | 8 |
| Solanum sanctae-catharinae | Dunal | Solanaceae | 8 |
| Solanum sarrachoides | Sendtn. | Solanaceae | 8 |
| Solanum sisymbriifolium | Lam. | Solanaceae | 8 |
| Solanum viarum | Dunal | 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 villosa | (Pers.) Cambess. | Caryophyllaceae | 8 |
| Spermacoce dasycephala | (Cham. & Schltdl.) Delprete | Rubiaceae | 8 |
| Spermacoce prostrata | Aubl. | Rubiaceae | 8 |
| Spermacoce remota | Lam. | Rubiaceae | 8 |
| Spermacoce verticillata | L. | Rubiaceae | 8 |
| Sphaeralcea bonariensis | (Cav.) Griseb. | 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 |
| 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 |
| Sticherus bifidus | (Willd.) Ching | Gleicheniaceae | 8 |
| Stigmaphyllon bonariense | (Hook. & Arn.) C.E.Anderson | Malpighiaceae | 8 |
| Stylosanthes guianensis | (Aubl.) Sw. | Fabaceae | 8 |
| Syagrus romanzoffiana | (Cham.) Glassman | Arecaceae | 8 |
| Symplocos uniflora | (Pohl) Benth. | Symplocaceae | 8 |
| Tabernaemontana catharinensis | A.DC. | Apocynaceae | 8 |
| Tagetes minuta | L. | Asteraceae | 8 |
| Talinum paniculatum | (Jacq.) Gaertn. | Talinaceae | 8 |
| Tarenaya houtteana | (Schltdl.) Soares Neto & Roalson | Cleomaceae | 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 multiflora | Horkel ex Körn. | Marantaceae | 8 |
| Thelesperma megapotamicum | (Spreng.) Kuntze | Asteraceae | 8 |
| Tillandsia aeranthos | (Loisel.) Desf. | 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 recurvata | (L.) L. | Bromeliaceae | 8 |
| Tillandsia recurvifolia | Hook. | Bromeliaceae | 8 |
| Tillandsia stricta | Sol. ex Ker Gawl. | 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 fluminensis | Vell. | Commelinaceae | 8 |
| Trichocentrum pumilum | (Lindl.) M.W.Chase & N.H.Williams | Orchidaceae | 8 |
| Trichogalium latoramosum | (Clos) Kadereit & Schneew. | Rubiaceae | 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 |
| Tropaeolum pentaphyllum | Lam. | Tropaeolaceae | 8 |
| Turnera sidoides | L. | Passifloraceae | 8 |
| Typha domingensis | Pers. | Typhaceae | 8 |
| Urochloa platyphylla | (Munro ex C.Wright) R.D.Webster | Poaceae | 8 |
| Urolepis hecatantha | (DC.) R.M.King & H.Rob. | Asteraceae | 8 |
| Urvillea uniloba | Radlk. | Sapindaceae | 8 |
| Utricularia gibba | L. | Lentibulariaceae | 8 |
| Utricularia laxa | A.St.-Hil. & Girard | Lentibulariaceae | 8 |
| Utricularia platensis | Speg. | Lentibulariaceae | 8 |
| Utricularia subulata | L. | Lentibulariaceae | 8 |
| Utricularia tricolor | A.St.-Hil. | Lentibulariaceae | 8 |
| Vachellia caven | (Molina) Seigler & Ebinger | Fabaceae | 8 |
| Vachellia farnesiana | (L.) Wight & Arn. | Fabaceae | 8 |
| Valeriana scandens | L. | Caprifoliaceae | 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 incompta | P.W.Michael | Verbenaceae | 8 |
| Verbena litoralis | Kunth | Verbenaceae | 8 |
| Verbena montevidensis | Spreng. | 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 |
| Vernonanthura montevidensis | (Spreng.) H.Rob. | Asteraceae | 8 |
| Vernonanthura nudiflora | (Less.) H.Rob. | Asteraceae | 8 |
| Vernonia incana | Less. | Asteraceae | 8 |
| Veronica peregrina | L. | Plantaginaceae | 8 |
| Vigna luteola | (Jacq.) Benth. | Fabaceae | 8 |
| Vitex megapotamica | (Spreng.) Moldenke | Lamiaceae | 8 |
| Viviania albiflora | (Cambess.) Reiche | Francoaceae | 8 |
| Wahlenbergia linarioides | (Lam.) A.DC. | Campanulaceae | 8 |
| Wedelia glauca | (Ortega) Hoffm. | Asteraceae | 8 |
| Wolffia brasiliensis | Wedd. | Araceae | 8 |
| Wolffia columbiana | H.Karst. | Araceae | 8 |
| Xanthium orientale | L. | Asteraceae | 8 |
| Xanthium spinosum | L. | Asteraceae | 8 |
| Xylosma tweediana | (Clos) Eichlam | Salicaceae | 8 |
| Xylosma venosa | N.E.Br. | Salicaceae | 8 |
| Xyris jupicai | Rich. | Xyridaceae | 8 |
| Zanthoxylum fagara | Sarg. | Rutaceae | 8 |
| Zanthoxylum rhoifolium | Lam. | Rutaceae | 8 |
| Zephyranthes americana | (Hoffmanns.) Ravenna | Amaryllidaceae | 8 |
| Zephyranthes candida | (Lindl.) Herb. | Amaryllidaceae | 8 |
| Zephyranthes mesochloa | Herb. | Amaryllidaceae | 8 |
| Zephyranthes minima | Herb. | Amaryllidaceae | 8 |
| Zornia latifolia | Sm. | Fabaceae | 8 |
| Zornia reticulata | Sm. | Fabaceae | 8 |
| Abobra tenuifolia | Naudin | Cucurbitaceae | 7 |
| Adesmia muricata | (Jacq.) DC. | Fabaceae | 7 |
| Azara uruguayensis | (Speg.) Sleumer | Salicaceae | 7 |
| Baccharis oxyodonta | DC. | Asteraceae | 7 |
| Blumenbachia latifolia | Cambess. | Loasaceae | 7 |
| Campomanesia aurea | O.Berg | Myrtaceae | 7 |
| Carex bonariensis | Desf. ex Poir. | Cyperaceae | 7 |
| Cayaponia martiana | (Cogn.) Cogn. | Cucurbitaceae | 7 |
| Christella hispidula | (Decne.) Holttum | Thelypteridaceae | 7 |
| Cuphea lindmaniana | Koehne ex Bacig. | Lythraceae | 7 |
| Cuscuta xanthochortos | Mart. ex Engelm. | Convolvulaceae | 7 |
| Cyperus hortensis | (Salzm. ex Steud.) Dorr | Cyperaceae | 7 |
| Desmodium cuneatum | Hook. & Arn. | Fabaceae | 7 |
| Desmodium subsericeum | Malme | Fabaceae | 7 |
| Eleocharis bonariensis | Nees | Cyperaceae | 7 |
| Eryngium divaricatum | Hook. & Arn. | Apiaceae | 7 |
| Guarea macrophylla | Vahl | Meliaceae | 7 |
| Gyptis tanacetifolia | (Gillies ex Hook. & Arn.) D.J.N.Hind & Flann | Asteraceae | 7 |
| Hygrophila costata | Nees | Acanthaceae | 7 |
| Mikania involucrata | Hook. & Arn. | Asteraceae | 7 |
| Mimosa bonplandii | Benth. | Fabaceae | 7 |
| Mimosa ramulosa | Benth. | Fabaceae | 7 |
| Mimosa uraguensis | Hook. & Arn. | Fabaceae | 7 |
| Monteiroa glomerata | (Hook. & Arn.) Krapov. | Malvaceae | 7 |
| Oldenlandia salzmannii | (DC.) Benth. & Hook.f. ex B.D.Jacks. | Rubiaceae | 7 |
| Ophioglossum nudicaule | L.f. | Ophioglossaceae | 7 |
| Paullinia elegans | Cambess. | Sapindaceae | 7 |
| Persicaria meisneriana | (Cham. & Schltdl.) M.Gómez | Polygonaceae | 7 |
| Pseudognaphalium cheiranthifolium | (Lam.) Hilliard & B.L.Burtt | Asteraceae | 7 |
| Pterocaulon angustifolium | DC. | Asteraceae | 7 |
| Sicyos polyacanthos | Cogn. | Cucurbitaceae | 7 |
| Sinningia elatior | (Kunth) Chautems | Gesneriaceae | 7 |
| Sisyrinchium palmifolium | L. | Iridaceae | 7 |
| Sisyrinchium vaginatum | Spreng. | Iridaceae | 7 |
| Tillandsia bandensis | Baker | Bromeliaceae | 7 |
| Tillandsia xiphioides | Ker Gawl. | Bromeliaceae | 7 |
| Tradescantia crassula | Link & Otto | Commelinaceae | 7 |
| Trichilia elegans | A.Juss. | Meliaceae | 7 |
| Trichocline catharinensis | Cabrera | Asteraceae | 7 |
| Trifolium polymorphum | Poir. | Fabaceae | 7 |
| Verbena intermedia | Gillies & Hook. | Verbenaceae | 7 |
| Asclepias candida | Vell. | Apocynaceae | 6 |
| Baccharis gnaphalioides | Spreng. | Asteraceae | 6 |
| Billbergia zebrina | (Herb.) Lindl. | Bromeliaceae | 6 |
| Calea cymosa | Less. | Asteraceae | 6 |
| Campomanesia xanthocarpa | (Mart.) O.Berg | Myrtaceae | 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 |
| Croton argenteus | L. | Euphorbiaceae | 6 |
| Cypella laeta | Ravenna | Iridaceae | 6 |
| Dianthera laevilinguis | (Nees) Lindau | Acanthaceae | 6 |
| Doryopteris triphylla | (Lam.) Christ | Pteridaceae | 6 |
| Euploca filiformis | (Lehm.) J.I.M.Melo & Semir | Heliotropiaceae | 6 |
| Gelasine elongata | (Graham) Ravenna | Iridaceae | 6 |
| Jarava plumosa | (Spreng.) S.W.L.Jacobs & J.Everett | Poaceae | 6 |
| Lilaeopsis minor | (A.W.Hill) Pérez-Mor. | Apiaceae | 6 |
| Mimosa dutrae | Malme | Fabaceae | 6 |
| Mitracarpus megapotamicus | (Spreng.) Kuntze | Rubiaceae | 6 |
| Oenothera parodiana | Munz | Onagraceae | 6 |
| Parodia linkii | (Lehm.) R.Kiesling | Cactaceae | 6 |
| Passiflora chrysophylla | Chodat | Passifloraceae | 6 |
| Peperomia hispidula | (Sw.) A.Dietr. | Piperaceae | 6 |
| Phalaris angusta | Nees ex Trin. | 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 |
| Senecio ostenii | Mattf. | Asteraceae | 6 |
| Senegalia tucumanensis | (Griseb.) Seigler & Ebinger | Fabaceae | 6 |
| Soliva stolonifera | (Brot.) Loudon | Asteraceae | 6 |
| Spathicarpa hastifolia | Hook. | Araceae | 6 |
| Tradescantia mundula | Kunth | Commelinaceae | 6 |
| Tragia volubilis | L. | Euphorbiaceae | 6 |
| Tripogandra glandulosa | (Seub.) Rohweder | Commelinaceae | 6 |
| Trixis lessingii | DC. | Asteraceae | 6 |
| Vittaria graminifolia | Kaulf. | Pteridaceae | 6 |
| Achatocarpus praecox | Griseb. | Achatocarpaceae | 5 |
| Aeschynomene denticulata | Rudd | Fabaceae | 5 |
| Aeschynomene rudis | Benth. | Fabaceae | 5 |
| Arachis villosa | Benth. | Fabaceae | 5 |
| Aristolochia macroura | Ortega | Aristolochiaceae | 5 |
| Baccharis microdonta | DC. | Asteraceae | 5 |
| Callaeum psilophyllum | (A.Juss.) D.M.Johnson | Malpighiaceae | 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 |
| Condalia buxifolia | Reissek | Rhamnaceae | 5 |
| Cordia americana | (L.) Gottschling & J.S.Mill. | Cordiaceae | 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 reflexus | Vahl | Cyperaceae | 5 |
| Desmodium affine | Schltdl. | Fabaceae | 5 |
| Eleocharis flavescens | (Poir.) Urb. | Cyperaceae | 5 |
| Escallonia megapotamica | Spreng. | Escalloniaceae | 5 |
| Euphorbia klotzschii | Oudejans | Euphorbiaceae | 5 |
| Galeandra beyrichii | Rchb.f. | Orchidaceae | 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 |
| Harrisia regelii | (Weing.) Borg | Cactaceae | 5 |
| Herbertia quareimana | Ravenna | Iridaceae | 5 |
| Ipomoea bonariensis | Hook. | Convolvulaceae | 5 |
| Isostigma peucedanifolium | (Spreng.) Less. | Asteraceae | 5 |
| Linum selaginoides | Lam. | Linaceae | 5 |
| Lippia turnerifolia | Cham. | Verbenaceae | 5 |
| Lonchocarpus nitidus | (Vogel) Benth. | Fabaceae | 5 |
| Lupinus lanatus | Benth. | Fabaceae | 5 |
| Melothria trilobata | Cogn. | Cucurbitaceae | 5 |
| Mimosa pilulifera | Benth. | Fabaceae | 5 |
| Mimosa rocae | Lorentz & Niederl. | Fabaceae | 5 |
| Myrceugenia myrtoides | O.Berg | Myrtaceae | 5 |
| Oxypetalum pannosum | Decne. | Apocynaceae | 5 |
| Pavonia glechomoides | A.St.-Hil. | Malvaceae | 5 |
| Pseudechinolaena polystachya | (Kunth) Stapf | Poaceae | 5 |
| Ranunculus flagelliformis | Sm. | Ranunculaceae | 5 |
| Rhynchospora rugosa | (Vahl) Gale | Cyperaceae | 5 |
| Senecio pinnatus | Poir. | Asteraceae | 5 |
| Sida glabra | Mill. | Malvaceae | 5 |
| Solanum malmeanum | Bitter | Solanaceae | 5 |
| Solanum tweedieanum | Hook. | Solanaceae | 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 |
| Vachellia astringens | (Gillies ex Hook. & Arn.) Speg. | Fabaceae | 5 |
| Verbena gracilescens | (Cham.) Herter | Verbenaceae | 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 |
| Annona emarginata | (Schltdl.) H.Rainer | Annonaceae | 4 |
| Arachis burkartii | Handro | Fabaceae | 4 |
| Aristolochia stuckertii | Speg. | Aristolochiaceae | 4 |
| Baccharis psiadioides | (Less.) Joch.Müll. | Asteraceae | 4 |
| Campovassouria cruciata | (Vell.) R.M.King & H.Rob. | Asteraceae | 4 |
| Campylocentrum densiflorum | Cogn. | Orchidaceae | 4 |
| Carex brongniartii | Kunth | Cyperaceae | 4 |
| Cenchrus nervosus | (Nees) Kuntze | Poaceae | 4 |
| Chaetogastra nitida | (Graham) P.J.F.Guim. & Michelang. | Melastomataceae | 4 |
| Chaptalia runcinata | Kunth | Asteraceae | 4 |
| Chromolaena squarrulosa | (Hook. & Arn.) R.M.King & H.Rob. | Asteraceae | 4 |
| Clematis acapulcensis | Hook. & Arn. | Ranunculaceae | 4 |
| Corchorus orinocensis | Kunth | Malvaceae | 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 |
| Diposis saniculifolia | (Lam.) DC. | Apiaceae | 4 |
| Eryngium megapotamicum | Malme | Apiaceae | 4 |
| Eryngium mesopotamicum | Pedersen | Apiaceae | 4 |
| Eubrachion ambiguum | (Hook. & Arn.) Engl. | Santalaceae | 4 |
| Galianthe fastigiata | Griseb. | Rubiaceae | 4 |
| Gamochaeta simplicicaulis | (Willd. ex Spreng.) Cabrera | Asteraceae | 4 |
| Glechon marifolia | Benth. | Lamiaceae | 4 |
| Hatschbachiella tweedieana | (Hook. ex Arn.) R.M.King & H.Rob. | Asteraceae | 4 |
| Heliotropium transalpinum | Vell. | Heliotropiaceae | 4 |
| Heteranthera zosterifolia | Mart. | Pontederiaceae | 4 |
| Heteropterys dumetorum | (Griseb.) Nied. | Malpighiaceae | 4 |
| Ipomoea malvaeoides | Meisn. | Convolvulaceae | 4 |
| Lippia coarctata | Tronc. | Verbenaceae | 4 |
| Lysimachia filiformis | (Cham. & Schltdl.) U.Manns & Anderb. | Primulaceae | 4 |
| Macroptilium erythroloma | (Mart. ex Benth.) Urb. | Fabaceae | 4 |
| Melica sarmentosa | Nees | Poaceae | 4 |
| Noticastrum malmei | Zardini | Asteraceae | 4 |
| Oxypetalum nigricans | (Decne.) Liede & Meve | Apocynaceae | 4 |
| Podocoma hirsuta | Baker | Asteraceae | 4 |
| Porophyllum obscurum | (Spreng.) DC. | Asteraceae | 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 |
| Sida dubia | A.St.-Hil. & Naudin | Malvaceae | 4 |
| Sporobolus coarctatus | (Trin.) P.M.Peterson & Saarela | Poaceae | 4 |
| Steinchisma laxum | (Sw.) Zuloaga | Poaceae | 4 |
| Styrax leprosus | Hook. & Arn. | Styracaceae | 4 |
| Trixis antimenorrhoea | (Schrank) Kuntze | Asteraceae | 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 |
| Abutilon umbelliflorum | A.St.-Hil. | Malvaceae | 3 |
| Achyrocline flaccida | (Weinm.) DC. | Asteraceae | 3 |
| Acianthera hygrophila | (Barb.Rodr.) Pridgeon & M.W.Chase | Orchidaceae | 3 |
| Andropogon tener | (Nees) Kunth | Poaceae | 3 |
| Aristida murina | Cav. | Poaceae | 3 |
| Aristolochia angustifolia | Cham. | Aristolochiaceae | 3 |
| Aspilia pascalioides | Griseb. | Asteraceae | 3 |
| Asplenium sellowianum | (Hieron.) Hieron. | Aspleniaceae | 3 |
| Baccharis penningtonii | Heering | Asteraceae | 3 |
| Baccharis subtropicalis | G.Heiden | Asteraceae | 3 |
| Berroa gnaphalioides | Beauverd | Asteraceae | 3 |
| Calydorea amabilis | (Ravenna) Goldblatt & Henrich | Iridaceae | 3 |
| Capsicum baccatum | L. | Solanaceae | 3 |
| Carex uruguensis | Boeckeler | Cyperaceae | 3 |
| Celtis chichape | (Wedd.) Miq. | Cannabaceae | 3 |
| Chevreulia sarmentosa | (Pers.) S.F.Blake | Asteraceae | 3 |
| Cleome titubans | Speg. | Cleomaceae | 3 |
| Criscia stricta | (Spreng.) Katinas | Asteraceae | 3 |
| Croton nitrariifolius | Baill. | 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 |
| Echinochloa polystachya | (Kunth) Hitchc. | Poaceae | 3 |
| Eugenia uruguayensis | Cambess. | Myrtaceae | 3 |
| Eustachys distichophylla | (Lag.) Nees | Poaceae | 3 |
| Ficus cestrifolia | Schott ex Spreng. | Moraceae | 3 |
| Gymnocalycium reductum | (Link) Pfeiff. ex Mittler | Cactaceae | 3 |
| Gymnocalycium schroederianum | Osten | Cactaceae | 3 |
| Habenaria bractescens | Lindl. | Orchidaceae | 3 |
| Habenaria parviflora | Lindl. | Orchidaceae | 3 |
| Hedeoma multiflora | Benth. | Lamiaceae | 3 |
| Hypericum cavernicola | L.B.Sm. | Hypericaceae | 3 |
| Hypochaeris megapotamica | Cabrera | Asteraceae | 3 |
| Hypochaeris microcephala | (Sch.Bip.) Cabrera | Asteraceae | 3 |
| Indigofera asperifolia | Bong. ex Benth. | Fabaceae | 3 |
| Ipheion sessile | (Phil.) Traub | Amaryllidaceae | 3 |
| Jaumea linearifolia | DC. | Asteraceae | 3 |
| Lathyrus nervosus | Lam. | Fabaceae | 3 |
| Lathyrus subulatus | Lam. | Fabaceae | 3 |
| Linum burkartii | Mildner | Linaceae | 3 |
| Lucilia nitens | Less. | Asteraceae | 3 |
| Lupinus heptaphyllus | (Vell.) Hassl. | Fabaceae | 3 |
| Manettia paraguariensis | Chodat | Rubiaceae | 3 |
| Mikania thapsoides | DC. | Asteraceae | 3 |
| Nicotiana bonariensis | Lehm. | Solanaceae | 3 |
| Nothoscordum dialystemon | (Guagl.) Crosa | Amaryllidaceae | 3 |
| Oxypetalum coeruleum | (D.Don ex Sweet) Decne. | Apocynaceae | 3 |
| Oxypetalum macrolepis | (Hook. & Arn.) Decne. | Apocynaceae | 3 |
| Oxypetalum tomentosum | Wight ex Hook. & Arn. | Apocynaceae | 3 |
| Paspalum stellatum | Flüggé | Poaceae | 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 comarapana | C.DC. | Piperaceae | 3 |
| Phacelia artemisioides | Griseb. | Hydrophyllaceae | 3 |
| Pilostyles blanchetii | (Gardner) R.Br. | Apodanthaceae | 3 |
| Pterocaulon alopecuroides | (Lam.) DC. | Asteraceae | 3 |
| Raulinoreitzia tremula | (Hook. & Arn.) R.M.King & H.Rob. | Asteraceae | 3 |
| Rhynchosia reticulata | (Sw.) DC. | Fabaceae | 3 |
| Schinus weinmanniifolia | Engl. | Anacardiaceae | 3 |
| Senecio tweediei | Hook. & Arn. | Asteraceae | 3 |
| Sinningia tubiflora | (Hook.) Fritsch | Gesneriaceae | 3 |
| Sisyrinchium scariosum | I.M.Johnst. | Iridaceae | 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 |
| Trichocline incana | Cass. | Asteraceae | 3 |
| Trichogalium ericoides | (Lam.) Kadereit & Schneew. | Rubiaceae | 3 |
| Zephyranthes filifolia | Kraenzl. | Amaryllidaceae | 3 |
| Zygostigma australe | (Cham. & Schltdl.) Griseb. | Gentianaceae | 3 |