Every accepted species in the genus is listed. A name links to its page when we hold at least three commercially licensed photographs of it. Where we do not, the row shows how many we actually found, which is usually none.
| Species | Authority | Usable photographs | Page |
|---|---|---|---|
| Porella navicularis | (Lehm. & Lindenb.) Pfeiff. | 470 | documented |
| Porella platyphylla | (L.) Pfeiff. | 422 | documented |
| Porella pinnata | L. | 36 | documented |
| Porella cordaeana | (Huebener) Moore | 34 | documented |
| Porella roellii | Steph. | 21 | documented |
| Porella obtusata | (Taylor) Trevis. | 8 | documented |
| Porella arboris-vitae | (With.) Grolle | 7 | documented |
| Porella atroviridis | Glenny & M.A.M. Renner | 6 | documented |
| Porella bolanderi | (Austin) Pearson | 4 | documented |
| Porella amoena | (Colenso) W.Martin | 2 | below the evidence gate |
| Porella abyssinica | (Nees) Trevis. | 0 | below the evidence gate |
| Porella acutifolia | (Lehm. & Lindenb.) Trevis. | 0 | below the evidence gate |
| Porella andica | (Gottsche) Hässel | 0 | below the evidence gate |
| Porella baueri | (Schiffn.) C.E.O.Jensen | 0 | below the evidence gate |
| Porella biedermannii | Frank Müll. | 0 | below the evidence gate |
| Porella borellii | (Gola) Parihar | 0 | below the evidence gate |
| Porella brachiata | (Taylor) Spruce | 0 | below the evidence gate |
| Porella brasiliensis | (Raddi) Schiffn. | 0 | below the evidence gate |
| Porella caespitans | (Steph.) P.Syd. | 0 | below the evidence gate |
| Porella campylophylla | (Lehm. & Lindenb.) Trevis. | 0 | below the evidence gate |
| Porella canariensis | (F.Weber) Underw. | 0 | below the evidence gate |
| Porella capehorniensis | Swails | 0 | below the evidence gate |
| Porella capensis | (Gottsche) Mitt. | 0 | below the evidence gate |
| Porella caucasica | Steph. | 0 | below the evidence gate |
| Porella chenii | S.Hatt. | 0 | below the evidence gate |
| Porella chilensis | (Lehm. & Lindenb.) Trevis. | 0 | below the evidence gate |
| Porella chinensis | (Steph.) P.Syd. | 0 | below the evidence gate |
| Porella chulii | H.M.Bum, Seung J.Park, Bakalin & S.S.Choi | 0 | below the evidence gate |
| Porella circinnata | Lindb. | 0 | below the evidence gate |
| Porella crawfordii | Steph. | 0 | below the evidence gate |
| Porella crispata | (Hook.) Trevis. | 0 | below the evidence gate |
| Porella cucullistipula | Steph. | 0 | below the evidence gate |
| Porella densifolia | (Steph.) P.Syd. | 0 | below the evidence gate |
| Porella elegantula | (Mont.) E.A.Hodgs. | 0 | below the evidence gate |
| Porella fauriei | (Steph.) S.Hatt. | 0 | below the evidence gate |
| Porella fengii | P.C.Chen & S.Hatt. | 0 | below the evidence gate |
| Porella geheebii | (Steph.) S.Hatt. | 0 | below the evidence gate |
| Porella gracillima | Mitt. | 0 | below the evidence gate |
| Porella grandifolia | (Steph.) S.Hatt. | 0 | below the evidence gate |
| Porella grandiloba | Lindb. | 0 | below the evidence gate |
| Porella grollei | S.Hatt. | 0 | below the evidence gate |
| Porella handelii | S.Hatt. | 0 | below the evidence gate |
| Porella hattorii | Udar & Shaheen | 0 | below the evidence gate |
| Porella heilingensis | C.Gao & Aur | 0 | below the evidence gate |
| Porella hoeana | S.Hatt. | 0 | below the evidence gate |
| Porella imbricata | Lour. | 0 | below the evidence gate |
| Porella inaequalis | (Gottsche ex Steph.) Perss. | 0 | below the evidence gate |
| Porella japonica | (Sande Lac.) Mitt. | 0 | below the evidence gate |
| Porella javanica | (Gottsche ex Steph.) Inoue | 0 | below the evidence gate |
| Porella koreana | H.M.Bum, Seung J.Park, Bakalin & S.S.Choi | 0 | below the evidence gate |
| Porella latifolia | J.X.Luo & C.Li | 0 | below the evidence gate |
| Porella leiboldii | (Lehm.) Trevis. | 0 | below the evidence gate |
| Porella longifolia | (Steph.) S.Hatt. | 0 | below the evidence gate |
| Porella madagascariensis | (Nees & Mont.) Trevis. | 0 | below the evidence gate |
| Porella mattirolii | (Gola) S.W.Arnell | 0 | below the evidence gate |
| Porella maxima | (Steph.) M.L.So | 0 | below the evidence gate |
| Porella mexicana | (Hampe ex Gottsche, Lindenb. & Nees) Trevis. | 0 | below the evidence gate |
| Porella montantii | (Steph.) E.W.Jones | 0 | below the evidence gate |
| Porella nitens | (Steph.) P.Syd. | 0 | below the evidence gate |
| Porella oblongifolia | S.Hatt. | 0 | below the evidence gate |
| Porella obtusiloba | S.Hatt. | 0 | below the evidence gate |
| Porella pacifica | M.A.M. Renner | 0 | below the evidence gate |
| Porella perrottetiana | (Mont.) Trevis. | 0 | below the evidence gate |
| Porella planifolia | J.X.Luo | 0 | below the evidence gate |
| Porella platyphylloidea | (Schwein.) Lindb. | 0 | below the evidence gate |
| Porella plicata | J.X.Luo | 0 | below the evidence gate |
| Porella plumosa | (Mitt.) Parihar | 0 | below the evidence gate |
| Porella prolixa | (Gottsche ex Steph.) E.W.Jones | 0 | below the evidence gate |
| Porella pulcherrima | Herzog & S.Hatt. | 0 | below the evidence gate |
| Porella recurveloba | Y.Jia & Qiang He | 0 | below the evidence gate |
| Porella reflexa | (Lehm. & Lindenb.) Trevis. | 0 | below the evidence gate |
| Porella revoluta | (Lehm. & Lindenb.) Trevis. | 0 | below the evidence gate |
| Porella robusta | M.A.M. Renner & Glenny | 0 | below the evidence gate |
| Porella saccata | M.L.So | 0 | below the evidence gate |
| Porella sichuanensis | S.Hatt. & K.C.Chang | 0 | below the evidence gate |
| Porella spinulosa | (Steph.) S.Hatt. | 0 | below the evidence gate |
| Porella squamulifera | (Taylor) Trevis. | 0 | below the evidence gate |
| Porella stephaniana | (C.Massal.) S.Hatt. | 0 | below the evidence gate |
| Porella subdentata | (Mitt.) Steph. | 0 | below the evidence gate |
| Porella subobtusa | (Steph.) S.Hatt. | 0 | below the evidence gate |
| Porella subsquarrosa | (Nees & Mont.) Trevis. | 0 | below the evidence gate |
| Porella swailsii | Grolle | 0 | below the evidence gate |
| Porella swartziana | (F.Weber) Trevis. | 0 | below the evidence gate |
| Porella triquetra | (Steph.) E.W.Jones | 0 | below the evidence gate |
| Porella truncata | J.X.Luo | 0 | below the evidence gate |
| Porella ulophylla | (Steph.) S.Hatt. | 0 | below the evidence gate |
| Porella undatorevoluta | J.X.Luo | 0 | below the evidence gate |
| Porella urceolata | S.Hatt. | 0 | below the evidence gate |
| Porella vallis-gratiae | (Gottsche ex Steph.) S.W.Arnell | 0 | below the evidence gate |
| Porella variabilis | (Kashyap & R.S.Chopra) Parihar | 0 | below the evidence gate |
| Porella vernicosa | Lindb. | 0 | below the evidence gate |
| Porella viridissima | (Mitt.) Grolle | 0 | below the evidence gate |
| Porella wataugensis | (Sull.) Underw. ex M.Howe | 0 | below the evidence gate |
This site is commercial, so it can only publish photographs licensed for commercial use. Roughly three quarters of the photographs on iNaturalist are CC BY-NC, which excludes them. A species needs at least three usable photographs before we will build it a page, because a page with one picture and no traits tells you nothing you could not get from a search result, and generating hundreds of thousands of those is precisely the practice that got the previous version of this site deleted.
So the species above without a link are not errors and they are not omissions. They are real, accepted plants that we cannot yet document to the standard we hold ourselves to, and the count in the photographs column is exactly how far short we fall.