Psorothamnus emoryi (dyebush)

Plate 1 figs. a–h · 8 separate observations

Psorothamnus emoryi, photographed by paulexcoff — fig. a paulexcoff, CC BY-SA 4.0 / 2022-04-16 / obs. 189367626

Psorothamnus emoryi, photographed by Diana — fig. b Diana, CC BY 4.0 / obs. 168689870

Psorothamnus emoryi, photographed by nmoorhatch — fig. c nmoorhatch, CC BY 4.0 / obs. 168129361

Psorothamnus emoryi, photographed by desertnaturalist — fig. f desertnaturalist, CC BY 4.0 / obs. 70947855

Psorothamnus emoryi, photographed by George Raymond — fig. g George Raymond, CC0 1.0 / obs. 69389634

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 3 botanical countries

Native distribution of Psorothamnus emoryi, 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.

Region	TDWG code	Continent
Arizona	ARI	NORTHERN AMERICA
California	CAL
Mexico Northwest	MXN

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.

Flowering 519 in flower of 713 examined

57%

47%

68%

84%

100%

90%

80%

100%

97%

90%

84%

Proportion of examined Psorothamnus emoryi in flower, by month
Month	In flower	Examined	Share	95% interval
Jan	51	89	57%	47% to 67%
Feb	60	127	47%	39% to 56%
Mar	110	161	68%	61% to 75%
Apr	74	88	84%	75% to 90%
May	29	29	100%	88% to 100%
Jun	9	10	90%	60% to 98%
Jul	4	5	80%	38% to 96%
Aug	4	4	too few examined
Sep	12	12	100%	76% to 100%
Oct	35	36	97%	86% to 100%
Nov	55	61	90%	80% to 95%
Dec	76	91	84%	75% to 90%

Peak flowering in May. Each bar is the share of Psorothamnus emoryi observations in which someone actually recorded the reproductive state and found the plant in flower, not the raw number of flowering records. That distinction matters: people observe plants far more in spring than in winter, so a bare count of flowering records partly measures when people go outside. Dividing by the number examined removes that. 519 of 713 examined observations were in flower, every one of them research grade. The whisker on each bar is a 95% Wilson interval. One month has fewer than 5 examined observations, so no proportion is drawn for it. This is still a global aggregate and not a forecast for your garden: the same species flowers on different dates in different hemispheres. Where a species has fewer than 30 flowering records we do not draw this chart at all. Computed from 10.15468/dl.cgje2x.

Also published as 16 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.

Dalea emoryi A.Gray
Dalea juncea (Rydb.) Wiggins
Dalea tinctoria Brandegee
Dalea tinctoria var. arenaria Brandegee
Dalea tinctoria var. tinctoria
Parosela arenaria Standl.
Parosela dentata (Rydb.) Standl.
Parosela emoryi (A.Gray) A.Heller
Parosela emoryi var. arenaria I.M.Johnst.
Parosela emoryi var. juncea I.M.Johnst.
Parosela juncea (Rydb.) Standl.
Parosela tinctoria (Brandegee) Standl.
Psorothamnus arenarius (Brandegee) Rydb.
Psorothamnus dentatus Rydb.
Psorothamnus junceus Rydb.
Psorothamnus tinctorius (Brandegee) Rydb.

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.
Wikidata. common name (P1843), joined on the World Flora Online identifier (P7715). CC0. Retrieved 2026-07-13.
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.