Eurybia conspicua (western showy aster)

Plate 1 figs. a–h · 8 separate observations

Eurybia conspicua, photographed by Shane Johnson — fig. a Shane Johnson, CC0 1.0 / 2022-05-25 / obs. 202463184

Eurybia conspicua, photographed by Braden J. Judson — fig. c Braden J. Judson, CC0 1.0 / obs. 202303653

Eurybia conspicua, photographed by Matt Lavin — fig. d Matt Lavin, CC BY 4.0 / obs. 177269445

Eurybia conspicua, photographed by Kathlin Simpkins — fig. e Kathlin Simpkins, CC0 1.0 / obs. 156015503

Eurybia conspicua, photographed by Eric Lamb — fig. f Eric Lamb, CC BY 4.0 / obs. 174402799

Eurybia conspicua, photographed by allan5519 — fig. g allan5519, CC BY 4.0 / obs. 181028457

Eurybia conspicua, photographed by Troy McConaghy — fig. h Troy McConaghy, CC0 1.0 / obs. 98609856

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 10 botanical countries

Native distribution of Eurybia conspicua, 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
Alberta	ABT	NORTHERN AMERICA
British Columbia	BRC
Idaho	IDA
Manitoba	MAN
Montana	MNT
Oregon	ORE
Saskatchewan	SAS
South Dakota	SDA
Washington	WAS
Wyoming	WYO

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 257 in flower of 414 examined

58%

84%

87%

54%

Proportion of examined Eurybia conspicua in flower, by month
Month	In flower	Examined	Share	95% interval
Jan	0	0	too few examined
Feb	0	0	too few examined
Mar	0	0	too few examined
Apr	0	1	too few examined
May	0	17	0%	0% to 18%
Jun	1	36	3%	0% to 14%
Jul	93	161	58%	50% to 65%
Aug	115	137	84%	77% to 89%
Sep	41	47	87%	75% to 94%
Oct	7	13	54%	29% to 77%
Nov	0	2	too few examined
Dec	0	0	too few examined

Peak flowering in Sep. Each bar is the share of Eurybia conspicua 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. 257 of 414 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 2 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 conspicuus Lindl.
Aster forwoodii S.Watson

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.