Townsendia hookeri (Hooker's Townsend daisy)

Plate 1 figs. a–h · 8 separate observations

Townsendia hookeri, photographed by Caleb Catto — fig. a Caleb Catto, CC BY 4.0 / 2022-05-11 / obs. 197478149

Townsendia hookeri, photographed by Jared Shorma — fig. b Jared Shorma, CC BY 4.0 / obs. 185112595

Townsendia hookeri, photographed by Peter L Achuff — fig. g Peter L Achuff, CC BY 4.0 / obs. 130455459

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 13 botanical countries

Native distribution of Townsendia hookeri, 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
Alaska	ASK	NORTHERN AMERICA
Alberta	ABT
British Columbia	BRC
Colorado	COL
Idaho	IDA
Montana	MNT
Nebraska	NEB
North Dakota	NDA
Saskatchewan	SAS
South Dakota	SDA
Utah	UTA
Wyoming	WYO
Yukon	YUK

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 256 in flower of 320 examined

83%

81%

88%

43%

Proportion of examined Townsendia hookeri in flower, by month
Month	In flower	Examined	Share	95% interval
Jan	0	10	0%	0% to 28%
Feb	10	12	83%	55% to 95%
Mar	88	109	81%	72% to 87%
Apr	78	89	88%	79% to 93%
May	76	86	88%	80% to 94%
Jun	3	7	43%	16% to 75%
Jul	1	4	too few examined
Aug	0	0	too few examined
Sep	0	1	too few examined
Oct	0	0	too few examined
Nov	0	1	too few examined
Dec	0	1	too few examined

Peak flowering in May. Each bar is the share of Townsendia hookeri 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. 256 of 320 examined observations were in flower, every one of them research grade. The whisker on each bar is a 95% Wilson interval. 6 months have fewer than 5 examined observations, so no proportion is drawn for them. 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 1 synonym

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.

Townsendia nuttallii Dorn

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.