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 |
|---|---|---|---|
| Arachnothryx leucophylla | (Kunth) Planch. | 29 | documented |
| Arachnothryx monteverdensis | (Lorence) Borhidi | 19 | documented |
| Arachnothryx buddleioides | (Benth.) Planch. | 10 | documented |
| Arachnothryx chiapensis | (Brandegee) Borhidi | 10 | documented |
| Arachnothryx calycosa | (Donn.Sm.) Borhidi | 7 | documented |
| Arachnothryx capitellata | (Hemsl.) Borhidi | 1 | below the evidence gate |
| Arachnothryx pyramidalis | (Lundell) Borhidi | 1 | below the evidence gate |
| Arachnothryx angustispica | Borhidi, E.Martínez & Ramos | 0 | below the evidence gate |
| Arachnothryx aspera | (Standl.) Borhidi | 0 | below the evidence gate |
| Arachnothryx atravesadensis | (Lorence) Borhidi | 0 | below the evidence gate |
| Arachnothryx axillaris | Torr.-Montúfar & H.Ochot. | 0 | below the evidence gate |
| Arachnothryx bertieroides | (Standl.) Borhidi | 0 | below the evidence gate |
| Arachnothryx bourgaei | (Standl.) Borhidi | 0 | below the evidence gate |
| Arachnothryx brachytyrsa | Borhidi | 0 | below the evidence gate |
| Arachnothryx brenesii | (Standl.) Borhidi | 0 | below the evidence gate |
| Arachnothryx calycophylla | Steyerm. | 0 | below the evidence gate |
| Arachnothryx caucana | (Standl. ex Steyerm.) Steyerm. | 0 | below the evidence gate |
| Arachnothryx chaconis | (Lorence) Borhidi | 0 | below the evidence gate |
| Arachnothryx chimalaparum | Lorence ex Borhidi | 0 | below the evidence gate |
| Arachnothryx chimboracensis | (Standl.) Steyerm. | 0 | below the evidence gate |
| Arachnothryx chiriquiana | (Lorence) Borhidi | 0 | below the evidence gate |
| Arachnothryx colombiana | (Rusby) Steyerm. | 0 | below the evidence gate |
| Arachnothryx costanensis | Steyerm. | 0 | below the evidence gate |
| Arachnothryx cupreiflora | (K.Schum. & K.Krause) Steyerm. | 0 | below the evidence gate |
| Arachnothryx darienensis | (Standl.) Borhidi | 0 | below the evidence gate |
| Arachnothryx discolor | (Kunth) Planch. | 0 | below the evidence gate |
| Arachnothryx dwyeri | (Lorence) Borhidi | 0 | below the evidence gate |
| Arachnothryx educta | (Standl. ex Steyerm.) Steyerm. | 0 | below the evidence gate |
| Arachnothryx euryphylla | (Standl.) Steyerm. | 0 | below the evidence gate |
| Arachnothryx evansii | (Lorence) Borhidi | 0 | below the evidence gate |
| Arachnothryx flocculosa | Borhidi | 0 | below the evidence gate |
| Arachnothryx floresolverae | Torr.-Montúfar & H.Ochot. | 0 | below the evidence gate |
| Arachnothryx fosbergii | Steyerm. | 0 | below the evidence gate |
| Arachnothryx garciae | Standl. ex Steyerm. | 0 | below the evidence gate |
| Arachnothryx ginetteae | (Lorence) Borhidi | 0 | below the evidence gate |
| Arachnothryx glabrata | (Standl.) Steyerm. | 0 | below the evidence gate |
| Arachnothryx gonzaleoides | (Standl.) Borhidi | 0 | below the evidence gate |
| Arachnothryx gracilis | (Hemsl.) Borhidi | 0 | below the evidence gate |
| Arachnothryx gracilispica | (Standl.) Borhidi | 0 | below the evidence gate |
| Arachnothryx guerrerensis | (Lorence) Borhidi | 0 | below the evidence gate |
| Arachnothryx guettardioides | Standl. ex Steyerm. | 0 | below the evidence gate |
| Arachnothryx heteranthera | (Brandegee) Borhidi | 0 | below the evidence gate |
| Arachnothryx hispidula | Griseb. | 0 | below the evidence gate |
| Arachnothryx hondurensis | (Donn.Sm.) Lorence | 0 | below the evidence gate |
| Arachnothryx jaliscensis | Borhidi & E.Martínez | 0 | below the evidence gate |
| Arachnothryx jurgensenii | (Hemsl.) Borhidi | 0 | below the evidence gate |
| Arachnothryx laniflora | (Benth.) Planch. | 0 | below the evidence gate |
| Arachnothryx latiloba | Borhidi | 0 | below the evidence gate |
| Arachnothryx lineolata | Borhidi | 0 | below the evidence gate |
| Arachnothryx linguiformis | (Hemsl.) Borhidi | 0 | below the evidence gate |
| Arachnothryx linguiloba | Borhidi & Diego | 0 | below the evidence gate |
| Arachnothryx lojensis | Steyerm. | 0 | below the evidence gate |
| Arachnothryx macrocalyx | (Standl. & Steyerm.) Borhidi | 0 | below the evidence gate |
| Arachnothryx manantlanensis | (Lorence) Borhidi | 0 | below the evidence gate |
| Arachnothryx megalantha | (Lorence) Lorence | 0 | below the evidence gate |
| Arachnothryx mexicana | (Turcz.) Borhidi | 0 | below the evidence gate |
| Arachnothryx michoacana | Borhidi | 0 | below the evidence gate |
| Arachnothryx monticola | Borhidi | 0 | below the evidence gate |
| Arachnothryx myriantha | (Standl. & Steyerm.) Borhidi | 0 | below the evidence gate |
| Arachnothryx nebulosa | (Standl.) Borhidi | 0 | below the evidence gate |
| Arachnothryx nelsonii | Lorence | 0 | below the evidence gate |
| Arachnothryx nitida | (Hemsl.) Borhidi | 0 | below the evidence gate |
| Arachnothryx ovandensis | (Lundell) Borhidi | 0 | below the evidence gate |
| Arachnothryx ovata | (Rusby) Steyerm. | 0 | below the evidence gate |
| Arachnothryx pansamalana | (Standl.) Borhidi | 0 | below the evidence gate |
| Arachnothryx pauciflora | Borhidi | 0 | below the evidence gate |
| Arachnothryx perezii | (Standl. ex Steyerm.) Steyerm. | 0 | below the evidence gate |
| Arachnothryx peruviana | (Standl.) Steyerm. | 0 | below the evidence gate |
| Arachnothryx povedae | (Lorence) Borhidi | 0 | below the evidence gate |
| Arachnothryx purpurea | (Lorence) Borhidi | 0 | below the evidence gate |
| Arachnothryx reflexa | (Benth.) Planch. | 0 | below the evidence gate |
| Arachnothryx rekoi | (Standl.) Borhidi | 0 | below the evidence gate |
| Arachnothryx ricoi | (Lorence) Borhidi | 0 | below the evidence gate |
| Arachnothryx rubens | (L.O.Williams) Borhidi | 0 | below the evidence gate |
| Arachnothryx rufescens | (B.L.Rob.) Borhidi | 0 | below the evidence gate |
| Arachnothryx rugulosa | (Standl.) Steyerm. | 0 | below the evidence gate |
| Arachnothryx rzedowskii | (Lorence) Borhidi | 0 | below the evidence gate |
| Arachnothryx sanchezii | Borhidi & Salas-Mor. | 0 | below the evidence gate |
| Arachnothryx scabra | (Hemsl.) Borhidi | 0 | below the evidence gate |
| Arachnothryx scoti | (Lorence) Borhidi | 0 | below the evidence gate |
| Arachnothryx secunda | (Standl.) Borhidi | 0 | below the evidence gate |
| Arachnothryx secundiflora | (B.L.Rob.) Borhidi | 0 | below the evidence gate |
| Arachnothryx septicidalis | (B.L.Rob.) Borhidi | 0 | below the evidence gate |
| Arachnothryx sessilis | Borhidi & G.Ortiz | 0 | below the evidence gate |
| Arachnothryx sinaloae | Borhidi | 0 | below the evidence gate |
| Arachnothryx skutchii | (Standl. & Steyerm.) Borhidi | 0 | below the evidence gate |
| Arachnothryx sousae | Borhidi | 0 | below the evidence gate |
| Arachnothryx spectabilis | (Steyerm.) Rova, Delprete & B.Bremer | 0 | below the evidence gate |
| Arachnothryx stachyoidea | (Donn.Sm.) Borhidi | 0 | below the evidence gate |
| Arachnothryx subglabra | Borhidi & N.C.Jiménez | 0 | below the evidence gate |
| Arachnothryx tacanensis | (Lundell) Borhidi | 0 | below the evidence gate |
| Arachnothryx tayloriae | (Lorence) Borhidi | 0 | below the evidence gate |
| Arachnothryx tenorioi | (Lorence) Borhidi | 0 | below the evidence gate |
| Arachnothryx tenuisepala | Borhidi | 0 | below the evidence gate |
| Arachnothryx thiemei | (Donn.Sm.) Borhidi | 0 | below the evidence gate |
| Arachnothryx torresii | (Standl.) Borhidi | 0 | below the evidence gate |
| Arachnothryx tuxtlensis | (Lorence & Cast.-Campos) Borhidi | 0 | below the evidence gate |
| Arachnothryx uxpanapensis | (Lorence & Cast.-Campos) Borhidi | 0 | below the evidence gate |
| Arachnothryx venezuelensis | Steyerm. | 0 | below the evidence gate |
| Arachnothryx villosa | (Hemsl.) Borhidi | 0 | below the evidence gate |
| Arachnothryx wendtii | (Lorence & Cast.-Campos) Borhidi | 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.