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 |
|---|---|---|---|
| Radula complanata | (L.) Dumort. | 713 | documented |
| Radula bolanderi | Gottsche ex Steph. | 49 | documented |
| Radula marginata | Gottsche, Lindenb. & Nees | 21 | documented |
| Radula strangulata | Hook.f. & Taylor | 16 | documented |
| Radula grandis | Steph. | 9 | documented |
| Radula allisonii | Castle | 8 | documented |
| Radula buccinifera | (Hook.f. & Taylor) Gottsche, Lindenb. & Nees | 5 | documented |
| Radula obtusiloba | Steph. | 4 | documented |
| Radula lindenbergiana | Gottsche ex C.Hartm. | 3 | documented |
| Radula demissa | M.A.M.Renner | 2 | below the evidence gate |
| Radula physoloba | Mont. | 2 | below the evidence gate |
| Radula splendida | M.A.M.Renner & Devos | 2 | below the evidence gate |
| Radula acuminata | Steph. | 0 | below the evidence gate |
| Radula acuta | Mitt. | 0 | below the evidence gate |
| Radula acutangula | Steph. | 0 | below the evidence gate |
| Radula acutiloba | Steph. | 0 | below the evidence gate |
| Radula aguirrei | R.M.Schust. ex M.A.M.Renner | 0 | below the evidence gate |
| Radula amentulosa | Mitt. | 0 | below the evidence gate |
| Radula amoena | Herzog | 0 | below the evidence gate |
| Radula anceps | Sande Lac. | 0 | below the evidence gate |
| Radula aneurismalis | (Hook.f. & Taylor) Gottsche, Lindenb. & Nees | 0 | below the evidence gate |
| Radula angulata | Steph. | 0 | below the evidence gate |
| Radula anisotoma | M.A.M.Renner | 0 | below the evidence gate |
| Radula appressa | Mitt. | 0 | below the evidence gate |
| Radula aquilegia | (Hook.f. & Taylor) Gottsche, Lindenb. & Nees | 0 | below the evidence gate |
| Radula assamica | Steph. | 0 | below the evidence gate |
| Radula australiana | K.Yamada | 0 | below the evidence gate |
| Radula australis | Austin | 0 | below the evidence gate |
| Radula bahiensis | F.R.Oliveira-da-Silva, Ilk.-Borg. & Gradst. | 0 | below the evidence gate |
| Radula bischlerae | Gradst. & Ilk.-Borg. | 0 | below the evidence gate |
| Radula boninensis | Furuki & K.Yamada | 0 | below the evidence gate |
| Radula borneensis | Steph. | 0 | below the evidence gate |
| Radula brasilica | K.Yamada | 0 | below the evidence gate |
| Radula caduca | K.Yamada | 0 | below the evidence gate |
| Radula caledonica | Steph. | 0 | below the evidence gate |
| Radula camerunensis | Pócs & Döbbeler | 0 | below the evidence gate |
| Radula campanulata | Lindenb. & Gottsche | 0 | below the evidence gate |
| Radula carringtonii | J.B.Jack | 0 | below the evidence gate |
| Radula castlei | Grolle | 0 | below the evidence gate |
| Radula cathayana | Promma, M.A.M.Renner & R.L.Zhu | 0 | below the evidence gate |
| Radula cavifolia | Hampe ex Gottsche, Lindenb. & Nees | 0 | below the evidence gate |
| Radula ceylanica | K.Yamada | 0 | below the evidence gate |
| Radula cochabambaensis | K.Yamada | 0 | below the evidence gate |
| Radula conferta | Lindenb. & Gottsche | 0 | below the evidence gate |
| Radula constricta | Steph. | 0 | below the evidence gate |
| Radula contorturamea | J.J. Engel & Glenny | 0 | below the evidence gate |
| Radula cordata | Mitt. | 0 | below the evidence gate |
| Radula costaricensis | Gottsche | 0 | below the evidence gate |
| Radula crenulata | Schiffn. | 0 | below the evidence gate |
| Radula cubensis | K.Yamada | 0 | below the evidence gate |
| Radula curvilobula | M.L.So | 0 | below the evidence gate |
| Radula cuspidata | Steph. | 0 | below the evidence gate |
| Radula decora | Gottsche ex Steph. | 0 | below the evidence gate |
| Radula decurrens | Mitt. | 0 | below the evidence gate |
| Radula deflexilobula | Promma, L.N.Zhang & R.L.Zhu | 0 | below the evidence gate |
| Radula densifolia | Castle | 0 | below the evidence gate |
| Radula diaphana | K.I.Goebel | 0 | below the evidence gate |
| Radula diversifolia | Steph. | 0 | below the evidence gate |
| Radula dolabrata | K.Yamada | 0 | below the evidence gate |
| Radula ectophylla | Promma, M.A.M.Renner & R.L.Zhu | 0 | below the evidence gate |
| Radula eggersii | K.Yamada | 0 | below the evidence gate |
| Radula elliottii | Castle | 0 | below the evidence gate |
| Radula emarginata | K.Yamada & Piippo | 0 | below the evidence gate |
| Radula episcia | Spruce | 0 | below the evidence gate |
| Radula evansii | Castle | 0 | below the evidence gate |
| Radula evelynae | K.Yamada | 0 | below the evidence gate |
| Radula falcata | Steph. | 0 | below the evidence gate |
| Radula faurieana | Steph. | 0 | below the evidence gate |
| Radula fendleri | Gottsche ex Steph. | 0 | below the evidence gate |
| Radula fernandezana | Steph. | 0 | below the evidence gate |
| Radula fissifolia | Steph. | 0 | below the evidence gate |
| Radula flaccida | Lindenb. & Gottsche | 0 | below the evidence gate |
| Radula flavifolia | (Hook.f. & Taylor) Gottsche, Lindenb. & Nees | 0 | below the evidence gate |
| Radula floridana | Castle | 0 | below the evidence gate |
| Radula forficata | M.A.M.Renner | 0 | below the evidence gate |
| Radula formosa | (C.F.W.Meissn. ex Spreng.) Nees | 0 | below the evidence gate |
| Radula fujitae | Furuki | 0 | below the evidence gate |
| Radula fulvifolia | (Hook.f. & Taylor) Gottsche, Lindenb. & Nees | 0 | below the evidence gate |
| Radula gedena | Gottsche ex Steph. | 0 | below the evidence gate |
| Radula gradsteinii | K.Yamada | 0 | below the evidence gate |
| Radula grandifolia | Steph. | 0 | below the evidence gate |
| Radula grandilobula | Promma & Chantanaorr. | 0 | below the evidence gate |
| Radula grevilleana | Taylor | 0 | below the evidence gate |
| Radula grollei | K.Yamada & Piippo | 0 | below the evidence gate |
| Radula guyanensis | K.Yamada | 0 | below the evidence gate |
| Radula hainanensis | L.N.Zhang & R.L.Zhu | 0 | below the evidence gate |
| Radula hastata | Steph. | 0 | below the evidence gate |
| Radula hattorii | K.Yamada | 0 | below the evidence gate |
| Radula hawaiica | M.L.So | 0 | below the evidence gate |
| Radula hedingeri | K.I.Goebel | 0 | below the evidence gate |
| Radula helix | (Hook.f. & Taylor) Gottsche, Lindenb. & Nees | 0 | below the evidence gate |
| Radula hicksiae | K.Yamada | 0 | below the evidence gate |
| Radula holtii | Spruce | 0 | below the evidence gate |
| Radula husnotii | Castle | 0 | below the evidence gate |
| Radula ilkiuborgesiae | F.R.Oliveira-da-Silva & Gradst. | 0 | below the evidence gate |
| Radula imposita | M.A.M.Renner | 0 | below the evidence gate |
| Radula inflexa | Gottsche ex Steph. | 0 | below the evidence gate |
| Radula inouei | K.Yamada | 0 | below the evidence gate |
| Radula involvens | Spruce | 0 | below the evidence gate |
| Radula iwatsukiana | K.Yamada | 0 | below the evidence gate |
| Radula jamaicensis | Pearson | 0 | below the evidence gate |
| Radula jamesonii | Taylor | 0 | below the evidence gate |
| Radula japonica | Gottsche ex Steph. | 0 | below the evidence gate |
| Radula javanica | Gottsche | 0 | below the evidence gate |
| Radula jonesii | Bouman, Dirkse & K.Yamada | 0 | below the evidence gate |
| Radula jovetiana | K.Yamada | 0 | below the evidence gate |
| Radula juddii | K.Yamada | 0 | below the evidence gate |
| Radula kilgourii | M.A.M.Renner | 0 | below the evidence gate |
| Radula kinabaluensis | K.Yamada | 0 | below the evidence gate |
| Radula kitagawae | K.Yamada | 0 | below the evidence gate |
| Radula kojana | Steph. | 0 | below the evidence gate |
| Radula koponenii | K.Yamada & Piippo | 0 | below the evidence gate |
| Radula kurzii | Steph. | 0 | below the evidence gate |
| Radula lacerata | Steph. | 0 | below the evidence gate |
| Radula laxiramea | Steph. | 0 | below the evidence gate |
| Radula leiboldii | Steph. | 0 | below the evidence gate |
| Radula lewisii | K.Yamada | 0 | below the evidence gate |
| Radula ligula | Steph. | 0 | below the evidence gate |
| Radula lingulata | Gottsche | 0 | below the evidence gate |
| Radula longicarinata | F.R.Oliveira-da-Silva & Gradst. | 0 | below the evidence gate |
| Radula longiloba | K.Yamada | 0 | below the evidence gate |
| Radula longispica | Steph. | 0 | below the evidence gate |
| Radula loriana | Castle | 0 | below the evidence gate |
| Radula macrodonta | Stephani | 0 | below the evidence gate |
| Radula madagascariensis | Gottsche | 0 | below the evidence gate |
| Radula magna | F.R.Oliveira-da-Silva & Gradst. | 0 | below the evidence gate |
| Radula mammosa | Spruce | 0 | below the evidence gate |
| Radula marojezica | E.W.Jones | 0 | below the evidence gate |
| Radula mauiensis | M.L.So | 0 | below the evidence gate |
| Radula mexicana | Lindenb. & Gottsche | 0 | below the evidence gate |
| Radula microloba | Gottsche | 0 | below the evidence gate |
| Radula microlobula | Castle | 0 | below the evidence gate |
| Radula minutilobula | K.Yamada & Piippo | 0 | below the evidence gate |
| Radula mittenii | Steph. | 0 | below the evidence gate |
| Radula mizutanii | K.Yamada | 0 | below the evidence gate |
| Radula morobeana | K.Yamada & Piippo | 0 | below the evidence gate |
| Radula multiamentula | E.A.Hodgs. | 0 | below the evidence gate |
| Radula multiflora | Gottsche ex Schiffn. | 0 | below the evidence gate |
| Radula myriopoda | M.A.M.Renner | 0 | below the evidence gate |
| Radula neotropica | Castle | 0 | below the evidence gate |
| Radula nigra | Pearson | 0 | below the evidence gate |
| Radula nilgiriensis | Udar & Dh.Kumar | 0 | below the evidence gate |
| Radula norrisii | K.Yamada & Piippo | 0 | below the evidence gate |
| Radula notabilis | M.A.M.Renner | 0 | below the evidence gate |
| Radula novae-hollandiae | Hampe ex Lehm. | 0 | below the evidence gate |
| Radula novivrieseana | K.Yamada | 0 | below the evidence gate |
| Radula novocaledonica | Hürl. & K.Yamada | 0 | below the evidence gate |
| Radula novocaledoniensis | K.Yamada | 0 | below the evidence gate |
| Radula novoguineensis | K.Yamada & Piippo | 0 | below the evidence gate |
| Radula nudicaulis | Steph. | 0 | below the evidence gate |
| Radula nymanii | Steph. | 0 | below the evidence gate |
| Radula obconica | Sull. | 0 | below the evidence gate |
| Radula obscura | Mitt. | 0 | below the evidence gate |
| Radula oceania | Castle | 0 | below the evidence gate |
| Radula ocellata | K.Yamada | 0 | below the evidence gate |
| Radula okamurana | Steph. | 0 | below the evidence gate |
| Radula onraedtii | K.Yamada | 0 | below the evidence gate |
| Radula opaciuscula | (Spruce) Castle | 0 | below the evidence gate |
| Radula oreopsis | M.A.M.Renner | 0 | below the evidence gate |
| Radula ornata | E.A.Br. & Pócs | 0 | below the evidence gate |
| Radula ovalilobula | K.Yamada | 0 | below the evidence gate |
| Radula oyamensis | Steph. | 0 | below the evidence gate |
| Radula paganii | Castle | 0 | below the evidence gate |
| Radula pallens | (Sw.) Nees ex Mont. | 0 | below the evidence gate |
| Radula pandei | Udar & Dh.Kumar | 0 | below the evidence gate |
| Radula patens | K.Yamada | 0 | below the evidence gate |
| Radula peruviana | K.Yamada | 0 | below the evidence gate |
| Radula philippinensis | K.Yamada | 0 | below the evidence gate |
| Radula pinnata | Pócs | 0 | below the evidence gate |
| Radula pinnulata | Mitt. | 0 | below the evidence gate |
| Radula plicata | Mitt. | 0 | below the evidence gate |
| Radula pocsii | K.Yamada | 0 | below the evidence gate |
| Radula portoricensis | Steph. | 0 | below the evidence gate |
| Radula prolifera | Arnell | 0 | below the evidence gate |
| Radula protensa | Lindenb. | 0 | below the evidence gate |
| Radula pseudoflaccida | E.W.Jones | 0 | below the evidence gate |
| Radula pseudoscripta | M.A.M.Renner | 0 | below the evidence gate |
| Radula pseudostachya | Spruce | 0 | below the evidence gate |
| Radula psychosis | M.A.M.Renner | 0 | below the evidence gate |
| Radula pugioniformis | M.A.M.Renner | 0 | below the evidence gate |
| Radula pulchella | Mitt. ex Steph. | 0 | below the evidence gate |
| Radula punctata | Steph. | 0 | below the evidence gate |
| Radula pusilla | Spruce | 0 | below the evidence gate |
| Radula quadrata | Gottsche | 0 | below the evidence gate |
| Radula queenslandica | K.Yamada | 0 | below the evidence gate |
| Radula ratkowskyana | K.Yamada | 0 | below the evidence gate |
| Radula recubans | Taylor | 0 | below the evidence gate |
| Radula recurvilobula | K.Yamada | 0 | below the evidence gate |
| Radula reflexa | Nees & Mont. | 0 | below the evidence gate |
| Radula renneri | F.R.Oliveira-da-Silva, Ilk.-Borg. & Gradst. | 0 | below the evidence gate |
| Radula resupinatiramosa | Promma, M.A.M.Renner & R.L.Zhu | 0 | below the evidence gate |
| Radula retroflexa | Taylor | 0 | below the evidence gate |
| Radula rheophila | Promma & Chantanaorr. | 0 | below the evidence gate |
| Radula rhombiloba | Steph. | 0 | below the evidence gate |
| Radula robinsonii | Steph. | 0 | below the evidence gate |
| Radula rupicola | K.Yamada | 0 | below the evidence gate |
| Radula saccatiloba | Steph. | 0 | below the evidence gate |
| Radula sainsburyana | E.A.Hodgs. & Allison | 0 | below the evidence gate |
| Radula santacruziana | K.Yamada & Gradst. | 0 | below the evidence gate |
| Radula scariosa | Mitt. | 0 | below the evidence gate |
| Radula schofieldiana | K.Yamada | 0 | below the evidence gate |
| Radula sharpii | K.Yamada | 0 | below the evidence gate |
| Radula sinskeana | K.Yamada | 0 | below the evidence gate |
| Radula sinuata | Gottsche ex Steph. | 0 | below the evidence gate |
| Radula smithii | F.R.Oliveira-da-Silva, Ilk.-Borg. & Gradst. | 0 | below the evidence gate |
| Radula socorana | Gerola | 0 | below the evidence gate |
| Radula sonsonensis | Steph. | 0 | below the evidence gate |
| Radula squarrosa | K.Yamada | 0 | below the evidence gate |
| Radula stellatogemmipara | C.Gao & Y.Huan Wu | 0 | below the evidence gate |
| Radula stenocalyx | Mont. | 0 | below the evidence gate |
| Radula striata | Mitt. ex Steph. | 0 | below the evidence gate |
| Radula subacuminata | L.N.Zhang & R.L.Zhu | 0 | below the evidence gate |
| Radula subamentulosa | Promma, M.A.M.Renner & R.L.Zhu | 0 | below the evidence gate |
| Radula subinflata | Lindenb. & Gottsche | 0 | below the evidence gate |
| Radula subsquarrosa | S.W.Arnell | 0 | below the evidence gate |
| Radula sullivantii | Austin | 0 | below the evidence gate |
| Radula sumatrana | Steph. | 0 | below the evidence gate |
| Radula tabularis | Steph. | 0 | below the evidence gate |
| Radula tambuyukonensis | Promma, M.A.M.Renner & R.L.Zhu | 0 | below the evidence gate |
| Radula tasmanica | Steph. | 0 | below the evidence gate |
| Radula taylorii | Steph. | 0 | below the evidence gate |
| Radula tectiloba | Steph. | 0 | below the evidence gate |
| Radula tenera | Mitt. ex Steph. | 0 | below the evidence gate |
| Radula tenuis | K.Yamada | 0 | below the evidence gate |
| Radula thiersiae | K.Yamada | 0 | below the evidence gate |
| Radula tjibodensis | K.I.Goebel | 0 | below the evidence gate |
| Radula tokiensis | Steph. | 0 | below the evidence gate |
| Radula tonitrua | Pócs & M.A.M.Renner | 0 | below the evidence gate |
| Radula trapezoides | Promma, M.A.M.Renner & R.L.Zhu | 0 | below the evidence gate |
| Radula underwoodii | Castle | 0 | below the evidence gate |
| Radula uvifera | (Hook.f. & Taylor) Gottsche, Lindenb. & Nees | 0 | below the evidence gate |
| Radula vagans | Steph. | 0 | below the evidence gate |
| Radula van-zantenii | K.Yamada | 0 | below the evidence gate |
| Radula varilobula | Castle | 0 | below the evidence gate |
| Radula venezuelensis | K.Yamada | 0 | below the evidence gate |
| Radula ventricosa | Steph. | 0 | below the evidence gate |
| Radula verrucosa | K.Yamada | 0 | below the evidence gate |
| Radula vieillardii | Gottsche ex Steph. | 0 | below the evidence gate |
| Radula visianica | C.Massal. | 0 | below the evidence gate |
| Radula voluta | Taylor ex Gottsche, Lindenb. & Nees | 0 | below the evidence gate |
| Radula vrieseana | Sande Lac. | 0 | below the evidence gate |
| Radula weymouthiana | Steph. | 0 | below the evidence gate |
| Radula wichurae | Steph. | 0 | below the evidence gate |
| Radula wrightii | Castle | 0 | below the evidence gate |
| Radula xalapensis | Nees & Mont. | 0 | below the evidence gate |
| Radula yamadae | F.R.Oliveira-da-Silva & Ilk.-Borg. | 0 | below the evidence gate |
| Radula yangii | K.Yamada | 0 | below the evidence gate |
| Radula yangioides | Promma, M.A.M.Renner & R.L.Zhu | 0 | below the evidence gate |
| Radula yanoella | R.M.Schust. | 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.