Ridsdalea

Accepted species 31 Documented here 0 Family Rubiaceae

Accepted species 31 in this genus

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.

SpeciesAuthority Usable photographsPage
Ridsdalea sootepensis (Craib) J.T.Pereira 1 below the evidence gate
Ridsdalea alba K.Khamm. 0 below the evidence gate
Ridsdalea anisophylloides (Wernham) J.T.Pereira 0 below the evidence gate
Ridsdalea attopevensis (Pit.) J.T.Pereira 0 below the evidence gate
Ridsdalea daweishanensis (Y.M.Shui & W.H.Chen) J.T.Pereira 0 below the evidence gate
Ridsdalea eucodon (K.Schum.) J.T.Pereira 0 below the evidence gate
Ridsdalea forsteniana (Miq.) J.T.Pereira 0 below the evidence gate
Ridsdalea graciliflora (Merr.) J.T.Pereira 0 below the evidence gate
Ridsdalea grandis (Korth.) J.T.Pereira 0 below the evidence gate
Ridsdalea kampucheana (Tirveng.) J.T.Pereira 0 below the evidence gate
Ridsdalea kassamensis J.T.Pereira 0 below the evidence gate
Ridsdalea lagunensis (Merr.) J.T.Pereira 0 below the evidence gate
Ridsdalea leytensis (J.T.Pereira & Ridsdale) J.T.Pereira 0 below the evidence gate
Ridsdalea macromera (Lauterb. & K.Schum.) J.T.Pereira 0 below the evidence gate
Ridsdalea merrillii (Elmer) J.T.Pereira 0 below the evidence gate
Ridsdalea negrosensis (Merr.) J.T.Pereira 0 below the evidence gate
Ridsdalea nigrescens (Valeton) J.T.Pereira 0 below the evidence gate
Ridsdalea papuana J.T.Pereira 0 below the evidence gate
Ridsdalea pseudoternifolia (Valeton) J.T.Pereira 0 below the evidence gate
Ridsdalea puffiana J.T.Pereira 0 below the evidence gate
Ridsdalea pulcherrima (Kurz) J.T.Pereira 0 below the evidence gate
Ridsdalea quadrasii (Elmer) J.G.Chavez, Meve & Liede 0 below the evidence gate
Ridsdalea schoemannii (Teijsm. & Binn.) J.T.Pereira 0 below the evidence gate
Ridsdalea sundaensis J.T.Pereira 0 below the evidence gate
Ridsdalea thailandica (Tirveng.) J.T.Pereira 0 below the evidence gate
Ridsdalea uranthera (C.E.C.Fisch.) K.M.Wong 0 below the evidence gate
Ridsdalea uvarioides (Valeton) J.T.Pereira 0 below the evidence gate
Ridsdalea venalis (Bremek.) J.T.Pereira 0 below the evidence gate
Ridsdalea vidalii (Bremek.) J.T.Pereira 0 below the evidence gate
Ridsdalea vietnamensis (Tirveng.) J.T.Pereira 0 below the evidence gate
Ridsdalea wittii (Craib) J.T.Pereira 0 below the evidence gate

Why some species have no pagethe 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.

Sourcesevery claim on this page

  1. World Flora Online Plant List. Accepted names, authorities, classification. CC0. Retrieved 2026-07-12.
  2. iNaturalist. Photograph counts, restricted to CC0 / CC BY / CC BY-SA. Retrieved 2026-06-27.