Purshia tridentata (Antelope Bitterbrush)

Plate 1 figs. a–h

Purshia tridentata, photographed by James H. Thomas — fig. a James H. Thomas, CC BY 4.0 / 2022-06-05 / obs. 204255740

Purshia tridentata, photographed by Casey H. Richart — fig. b Casey H. Richart, CC BY 4.0 / obs. 202614820

Purshia tridentata, photographed by Cecelia Alexander — fig. c Cecelia Alexander, CC0 1.0 / obs. 204517512

Purshia tridentata, photographed by Shane Johnson — fig. d Shane Johnson, CC0 1.0 / obs. 202333630

Purshia tridentata, photographed by Garth Harwood — fig. e Garth Harwood, CC BY 4.0 / obs. 205047986

Purshia tridentata, photographed by Annika Lindqvist — fig. h Annika Lindqvist, CC BY 4.0 / obs. 203620124

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.

Flowering n = 1,227 observations

175

592

399

Flowering observations of Purshia tridentata by month
Month	Observations
Jan	0
Feb	0
Mar	18
Apr	175
May	592
Jun	399
Jul	34
Aug	5
Sep	2
Oct	0
Nov	1
Dec	1

Peak flowering in May, from 1,227 community-annotated observations worldwide. This is a global aggregate, not a forecast for your garden: the same species flowers on different dates in different hemispheres, and citizen-science records cluster near cities, at weekends, and in spring. Where a species has fewer than 30 annotated records we do not draw this chart at all.

Also published as 4 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.

Kunzia tridentata (Pursh) Spreng.
Purshia tigarea F.Dietr.
Purshia tridentata var. tridentata
Tigarea tridentata Pursh

Sourcesevery claim on this page

World Flora Online Plant List. accepted name, authority, classification. CC0. Retrieved 2026-07-12.
iNaturalist. photographs and flowering annotations, CC0 / CC BY / CC BY-SA only. per photograph. Retrieved 2026-06-27.

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