Richardia tricocca(Torr. & A.Gray) Standl.

prairie Mexican clover

WFO wfo-0000296706 Accepted WFO 2026-06 8 photographs CC BY

Plate 1 figs. a–h · 8 separate observations

Richardia tricocca, photographed by Alison Northup
fig. a Alison Northup, CC BY 4.0 / 2018-09-23 / obs. 25455209
Richardia tricocca, photographed by Sam Kieschnick
fig. b Sam Kieschnick, CC BY 4.0 / obs. 11405651
Richardia tricocca, photographed by Brooke Smith
fig. c Brooke Smith, CC BY 4.0 / obs. 133029486
Richardia tricocca, photographed by Tyler Cannon
fig. d Tyler Cannon, CC BY 4.0 / obs. 93517186
Richardia tricocca, photographed by Sam Kieschnick
fig. e Sam Kieschnick, CC BY 4.0 / obs. 168904892
Richardia tricocca, photographed by Sam Kieschnick
fig. f Sam Kieschnick, CC BY 4.0 / obs. 128052420
Richardia tricocca, photographed by Sam Kieschnick
fig. g Sam Kieschnick, CC BY 4.0 / obs. 88895779
Richardia tricocca, photographed by Alison Northup
fig. h Alison Northup, CC BY 4.0 / obs. 10250257

Every figure is a research-grade observation under CC0, CC BY or CC BY-SA, rehosted with the photographer’s name, the licence and the observation it came from. Photographs under a NonCommercial licence are excluded from this site and are never stored, which costs us a great many pictures and is not negotiable.

Native range 6 botanical countries

Regions where Richardia tricocca is native: Louisiana, Mexico Central, Mexico Gulf, Mexico Northeast, Mexico Southwest, Texas LouisianaMexico CentralMexico GulfMexico NortheastMexico SouthwestTexas
Native distribution of Richardia tricocca, after Kew’s World Checklist of Vascular Plants. Introduced, extinct and doubtful records are excluded, so this is where the plant is from, not everywhere it now grows.
RegionTDWG codeContinent
Louisiana LOU NORTHERN AMERICA
Mexico Central MXC
Mexico Gulf MXG
Mexico Northeast MXE
Mexico Southwest MXS
Texas TEX

Region boundaries approximated from Natural Earth (public domain) and mapped to TDWG World Geographical Scheme for Recording Plant Distributions (WGSRPD) level-3 botanical countries (Brummitt 2001). Indicative, not the official WGSRPD geometry.

Also published as 9 synonyms

A synonym is not an error. It is a record of botanists disagreeing, in print, about where this plant belongs. Each of these was somebody’s considered answer.

  • Crusea allococca A.Gray
  • Crusea tricocca (Torr. & A.Gray) A.Heller
  • Diodia tetracocca (M.Martens & Galeotti) Hemsl.
  • Diodia tricocca Torr. & A.Gray
  • Oldenlandia depressa Sessé & Moc.
  • Richardsonia tetracocca (M.Martens & Galeotti) K.Schum. ex Loes.
  • Richardsonia tetracocca var. calvescens Loes.
  • Richardsonia tricocca (Torr. & A.Gray) K.Schum. ex Loes.
  • Spermacoce tetracocca M.Martens & Galeotti

Sourcesevery claim on this page

  1. World Flora Online Plant List. accepted name, authority, classification. CC0. Retrieved 2026-07-12.
  2. iNaturalist. photographs and flowering annotations, CC0 / CC BY / CC BY-SA only. per photograph. Retrieved 2026-06-27.
  3. Wikidata. common name (P1843), joined on the World Flora Online identifier (P7715). CC0. Retrieved 2026-07-13.
  4. Kew, World Checklist of Vascular Plants (WCVP v16). native distribution by TDWG level-3 botanical country, and life form. CC BY 3.0. Retrieved 2026-06-04.

We publish what we can source and we say so when we cannot. This page has no care advice and no toxicity claim, because we do not yet have those from a source we can cite.