Grindelia ciliata (Spanish gold)

Plate 1 figs. a–h · 8 separate observations

Grindelia ciliata, photographed by Annika Lindqvist — fig. a Annika Lindqvist, CC BY 4.0 / 2022-05-01 / obs. 195051769

Grindelia ciliata, photographed by Nathan May — fig. b Nathan May, CC BY 4.0 / obs. 161128632

Grindelia ciliata, photographed by Clay — fig. c Clay, CC BY 4.0 / obs. 158150256

Grindelia ciliata, photographed by Jay Pruett — fig. d Jay Pruett, CC BY 4.0 / obs. 157081578

Grindelia ciliata, photographed by E. Millman — fig. h E. Millman, CC BY 4.0 / obs. 155609242

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 14 botanical countries

Native distribution of Grindelia ciliata, 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
Arkansas	ARK
California	CAL
Colorado	COL
Illinois	ILL
Iowa	IOW
Kansas	KAN
Louisiana	LOU
Michigan	MIC
Missouri	MSO
Nebraska	NEB
New Mexico	NWM
Oklahoma	OKL
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.

Flowering 277 in flower of 395 examined

26%

86%

97%

71%

Proportion of examined Grindelia ciliata in flower, by month
Month	In flower	Examined	Share	95% interval
Jan	0	3	too few examined
Feb	1	1	too few examined
Mar	0	2	too few examined
Apr	0	4	too few examined
May	0	16	0%	0% to 19%
Jun	2	33	6%	2% to 20%
Jul	10	38	26%	15% to 42%
Aug	89	104	86%	78% to 91%
Sep	145	149	97%	93% to 99%
Oct	29	41	71%	56% to 82%
Nov	1	2	too few examined
Dec	0	2	too few examined

Peak flowering in Sep. Each bar is the share of Grindelia ciliata 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. 277 of 395 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 5 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.

Aster ciliatus (Nutt.) Kuntze
Donia ciliata Nutt.
Grindelia papposa G.L.Nesom & Y.B.Suh
Haplopappus ciliatus DC.
Prionopsis ciliata (Nutt.) Nutt.

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.