Diodia

Accepted species 18 Documented here 2 Family Rubiaceae

Accepted species 18 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
Diodia virginiana L. 1,363 documented
Diodia saponariifolia (Cham. & Schltdl.) K.Schum. 6 documented
Diodia aulacosperma K.Schum. 0 below the evidence gate
Diodia barbata (Poir.) DC. 0 below the evidence gate
Diodia barbigera Hook. & Arn. 0 below the evidence gate
Diodia discolor DC. 0 below the evidence gate
Diodia flavescens Hiern 0 below the evidence gate
Diodia kuntzei K.Schum. 0 below the evidence gate
Diodia macrophylla K.Schum. 0 below the evidence gate
Diodia microcarpa K.Schum. ex Glaziou 0 below the evidence gate
Diodia mitens Bello 0 below the evidence gate
Diodia othonii Rizzini 0 below the evidence gate
Diodia paludosa Kuntze 0 below the evidence gate
Diodia perforata Urb. 0 below the evidence gate
Diodia rubricosa Hiern 0 below the evidence gate
Diodia saponarioides C.Presl 0 below the evidence gate
Diodia simplex Sw. 0 below the evidence gate
Diodia verticillata Vahl 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.