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 |
|---|---|---|---|
| Hackelia virginiana | (L.) I.M.Johnst. | 1,099 | documented |
| Hackelia micrantha | (Eastw.) J.L.Gentry | 115 | documented |
| Hackelia patens | I.M.Johnst. | 97 | documented |
| Hackelia deflexa | (Wahlenb.) Opiz | 92 | documented |
| Hackelia latifolia | (R.Br.) Dimon & M.A.M.Renner | 61 | documented |
| Hackelia suaveolens | (R.Br.) Dimon & M.A.M.Renner | 59 | documented |
| Hackelia velutina | I.M.Johnst. | 55 | documented |
| Hackelia floribunda | (Lehm.) I.M.Johnst. | 52 | documented |
| Hackelia mundula | (Jeps.) Ferris | 50 | documented |
| Hackelia brevicula | (Jeps.) J.L.Gentry | 30 | documented |
| Hackelia californica | I.M.Johnst. | 15 | documented |
| Hackelia nervosa | (Kellogg) I.M.Johnst. | 12 | documented |
| Hackelia cusickii | Brand | 11 | documented |
| Hackelia mexicana | (Schltdl. & Cham.) I.M.Johnst. | 7 | documented |
| Hackelia bella | I.M.Johnst. | 6 | documented |
| Hackelia besseyi | (Rydb.) J.L.Gentry | 6 | documented |
| Hackelia cinerea | I.M.Johnst. | 6 | documented |
| Hackelia sharsmithii | I.M.Johnst. | 6 | documented |
| Hackelia uncinata | (Royle ex Benth.) C.E.C.Fisch. | 6 | documented |
| Hackelia amethystina | J.T.Howell | 5 | documented |
| Hackelia diffusa | I.M.Johnst. | 5 | documented |
| Hackelia taylorii | Harrod, Malmquist & R.L.Carr | 2 | below the evidence gate |
| Hackelia pinetorum | I.M.Johnst. | 1 | below the evidence gate |
| Hackelia andicola | (K.Krause) Brand | 0 | below the evidence gate |
| Hackelia bhutanica | R.R.Mill | 0 | below the evidence gate |
| Hackelia brachytuba | (Diels) I.M.Johnst. | 0 | below the evidence gate |
| Hackelia ciliata | (Douglas ex Lehm.) I.M.Johnst. | 0 | below the evidence gate |
| Hackelia cronquistii | J.L.Gentry | 0 | below the evidence gate |
| Hackelia davisii | Cronquist | 0 | below the evidence gate |
| Hackelia difformis | (Y.S.Lian & J.Q.Wang) Riedl | 0 | below the evidence gate |
| Hackelia gracilenta | I.M.Johnst. | 0 | below the evidence gate |
| Hackelia heliocarpa | (Brand) Brand | 0 | below the evidence gate |
| Hackelia hendersonii | (Piper) Brand | 0 | below the evidence gate |
| Hackelia hintoniorum | (B.L.Turner) Sutorý | 0 | below the evidence gate |
| Hackelia hirsuta | (Wooton & Standl.) I.M.Johnst. | 0 | below the evidence gate |
| Hackelia hispida | I.M.Johnst. | 0 | below the evidence gate |
| Hackelia ibapensis | L.M.Shultz & J.Shultz | 0 | below the evidence gate |
| Hackelia leonotis | I.M.Johnst. | 0 | below the evidence gate |
| Hackelia meeboldii | Brand | 0 | below the evidence gate |
| Hackelia murgabica | Czukav. | 0 | below the evidence gate |
| Hackelia obtusifolia | R.R.Mill | 0 | below the evidence gate |
| Hackelia ophiobia | R.L.Carr | 0 | below the evidence gate |
| Hackelia parviflora | (K.Krause) Brand | 0 | below the evidence gate |
| Hackelia popovii | Czukav. | 0 | below the evidence gate |
| Hackelia rattanii | Brand | 0 | below the evidence gate |
| Hackelia revoluta | (Ruiz & Pav.) I.M.Johnst. | 0 | below the evidence gate |
| Hackelia scaberrima | Brand | 0 | below the evidence gate |
| Hackelia sessilifructa | (Y.S.Lian & J.Q.Wang) Ovczinnikova | 0 | below the evidence gate |
| Hackelia setosa | (Piper) I.M.Johnst. | 0 | below the evidence gate |
| Hackelia skutchii | I.M.Johnst. | 0 | below the evidence gate |
| Hackelia stewartii | I.M.Johnst. | 0 | below the evidence gate |
| Hackelia stricta | I.M.Johnst. | 0 | below the evidence gate |
| Hackelia ursina | I.M.Johnst. | 0 | below the evidence gate |
| Hackelia venusta | H.St.John | 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.