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 |
|---|---|---|---|
| Trigonostemon fragilis | (Gagnep.) Airy Shaw | 6 | documented |
| Trigonostemon adenocalyx | Gagnep. | 0 | below the evidence gate |
| Trigonostemon angustifolius | Merr. | 0 | below the evidence gate |
| Trigonostemon apetalogyne | Airy Shaw | 0 | below the evidence gate |
| Trigonostemon aurantiacus | (Kurz ex Teijsm. & Binn.) Boerl. | 0 | below the evidence gate |
| Trigonostemon balgooyi | R.Y.Yu & Welzen | 0 | below the evidence gate |
| Trigonostemon beccarii | Ridl. | 0 | below the evidence gate |
| Trigonostemon bonianus | Gagnep. | 0 | below the evidence gate |
| Trigonostemon borneensis | Merr. | 0 | below the evidence gate |
| Trigonostemon capillipes | (Hook.f.) Airy Shaw | 0 | below the evidence gate |
| Trigonostemon capitellatum | Gagnep. | 0 | below the evidence gate |
| Trigonostemon cherrieri | Veillon | 0 | below the evidence gate |
| Trigonostemon detritiferus | R.I.Milne | 0 | below the evidence gate |
| Trigonostemon diffusus | Merr. | 0 | below the evidence gate |
| Trigonostemon diplopetalus | Thwaites | 0 | below the evidence gate |
| Trigonostemon dipteranthus | Airy Shaw | 0 | below the evidence gate |
| Trigonostemon eberhardtii | Gagnep. | 0 | below the evidence gate |
| Trigonostemon filiformis | Quisumb. | 0 | below the evidence gate |
| Trigonostemon flavidus | Gagnep. | 0 | below the evidence gate |
| Trigonostemon hartleyi | Airy Shaw | 0 | below the evidence gate |
| Trigonostemon heteranthus | Wight | 0 | below the evidence gate |
| Trigonostemon inopinatus | Airy Shaw | 0 | below the evidence gate |
| Trigonostemon kerrii | Craib | 0 | below the evidence gate |
| Trigonostemon laevigatus | Müll.Arg. | 0 | below the evidence gate |
| Trigonostemon lanceolatus | Pax | 0 | below the evidence gate |
| Trigonostemon lii | Y.T.Chang | 0 | below the evidence gate |
| Trigonostemon longifolius | Baill. ex Müll.Arg. | 0 | below the evidence gate |
| Trigonostemon longifolius | Baill. | 0 | below the evidence gate |
| Trigonostemon longipes | (Merr.) Merr. | 0 | below the evidence gate |
| Trigonostemon lychnos | (R.I.Milne) R.Y.Yu & Welzen | 0 | below the evidence gate |
| Trigonostemon magnificus | R.I.Milne | 0 | below the evidence gate |
| Trigonostemon malaccanus | Müll.Arg. | 0 | below the evidence gate |
| Trigonostemon matanginsu | R.Milne | 0 | below the evidence gate |
| Trigonostemon merrillii | Elmer | 0 | below the evidence gate |
| Trigonostemon montanus | R.Y.Yu & Welzen | 0 | below the evidence gate |
| Trigonostemon murtonii | Craib | 0 | below the evidence gate |
| Trigonostemon nemoralis | Thwaites | 0 | below the evidence gate |
| Trigonostemon oblongifolius | Merr. | 0 | below the evidence gate |
| Trigonostemon pachyphyllus | Airy Shaw | 0 | below the evidence gate |
| Trigonostemon palustris | R.Y.Yu & Welzen | 0 | below the evidence gate |
| Trigonostemon pentandrus | Pax & K.Hoffm. | 0 | below the evidence gate |
| Trigonostemon philippinensis | Stapf | 0 | below the evidence gate |
| Trigonostemon polyanthus | Merr. | 0 | below the evidence gate |
| Trigonostemon praetervisus | Airy Shaw | 0 | below the evidence gate |
| Trigonostemon quocensis | Gagnep. | 0 | below the evidence gate |
| Trigonostemon reidioides | (Kurz) Craib | 0 | below the evidence gate |
| Trigonostemon rufescens | Jabl. | 0 | below the evidence gate |
| Trigonostemon sandakanensis | Jabl. | 0 | below the evidence gate |
| Trigonostemon scopulatus | R.Y.Yu & Welzen | 0 | below the evidence gate |
| Trigonostemon semperflorens | (Roxb.) Müll.Arg. | 0 | below the evidence gate |
| Trigonostemon serratus | Blume | 0 | below the evidence gate |
| Trigonostemon sinclairii | Jabl. | 0 | below the evidence gate |
| Trigonostemon tuberculatus | F.Du & Ju He | 0 | below the evidence gate |
| Trigonostemon verticillatus | Pac | 0 | below the evidence gate |
| Trigonostemon victoriae | R.Y.Yu & Welzen | 0 | below the evidence gate |
| Trigonostemon villosus | Hook.f. | 0 | below the evidence gate |
| Trigonostemon viridissimus | (Kurz) Airy Shaw | 0 | below the evidence gate |
| Trigonostemon voratus | Croizat | 0 | below the evidence gate |
| Trigonostemon wetriifolius | Airy Shaw & Ng | 0 | below the evidence gate |
| Trigonostemon whiteanus | (Croizat) Airy Shaw | 0 | below the evidence gate |
| Trigonostemon wildeorum | R.Y.Yu & Welzen | 0 | below the evidence gate |
| Trigonostemon xyphophylloides | (Croizat) L.K.Dai & T.L.Wu | 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.