Corethrogyne filaginifolia(Hook. & Arn.) Nutt.

California Aster

WFO wfo-0000012365 Accepted WFO 2026-06 8 photographs CC0 / CC BY

Plate 1 figs. a–h

Corethrogyne filaginifolia, photographed by Cricket Raspet
fig. a Cricket Raspet, CC BY 4.0 / 2022-06-06 / obs. 204036530
Corethrogyne filaginifolia, photographed by velodrome
fig. b velodrome, CC BY 4.0 / obs. 202593280
Corethrogyne filaginifolia, photographed by joergmlpts
fig. c joergmlpts, CC BY 4.0 / obs. 203961147
Corethrogyne filaginifolia, photographed by James C. Davis
fig. d James C. Davis, CC BY-SA 4.0 / obs. 197154313
Corethrogyne filaginifolia, photographed by Amthinkia
fig. e Amthinkia, CC0 1.0 / obs. 182172569
Corethrogyne filaginifolia, photographed by Henrik Kibak
fig. f Henrik Kibak, CC BY 4.0 / obs. 195355197
Corethrogyne filaginifolia, photographed by elonicera
fig. g elonicera, CC0 1.0 / obs. 181797545
Corethrogyne filaginifolia, photographed by Dan Horowitz
fig. h Dan Horowitz, CC0 1.0 / obs. 187053736

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 = 2,452 observations

Peak flowering in Aug, from 2,452 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 64 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 attenuatus (Howell) M.Peck
  • Aster filaginifolius Hook. & Arn.
  • Aster incanus (Lindl.) A.Gray
  • Aster tomentellus Hook. & Arn.
  • Corethrogyne brevicula Greene
  • Corethrogyne caespitosa Greene
  • Corethrogyne californica DC.
  • Corethrogyne californica var. californica
  • Corethrogyne californica var. incana (Lindl.) Kuntze
  • Corethrogyne californica var. leucophylla (Lindl. ex DC.) Kuntze
  • Corethrogyne californica var. lyonii S.F.Blake
  • Corethrogyne californica var. obovata (Benth.) Kuntze
  • Corethrogyne californica var. recurva Kuntze
  • Corethrogyne californica var. rigida (Benth.) Kuntze
  • Corethrogyne californica var. spathulata (A.Gray) Kuntze
  • Corethrogyne californica var. tomentella (Hook. & Arn.) Kuntze
  • Corethrogyne californica var. virgata (Benth.) Kuntze
  • Corethrogyne filaginifolia var. bernardina (Abrams) H.M.Hall
  • Corethrogyne filaginifolia var. californica (DC.) Saroyan
  • Corethrogyne filaginifolia var. filaginifolia
  • Corethrogyne filaginifolia var. glomerata H.M.Hall
  • Corethrogyne filaginifolia var. hamiltonensis D.D.Keck
  • Corethrogyne filaginifolia var. incana (Nutt.) Canby
  • Corethrogyne filaginifolia var. latifolia H.M.Hall

and 40 more.

Sourcesevery claim on this page

  1. World Flora Online Plant List. accepted name, authority, classification. CC0. Retrieved 2026-07-12.
  2. 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.