Xanthisma gracile(Nutt.) D.R.Morgan & R.L.Hartm.

Annual BristleweedAnnual bristleweedslender goldenweed

WFO wfo-0000062808 Accepted WFO 2026-06 8 photographs CC BY / CC BY-SA

Plate 1 figs. a–h · 8 separate observations

Xanthisma gracile, photographed by lejones417
fig. a lejones417, CC BY-SA 4.0 / 2021-10-20 / obs. 164830868
Xanthisma gracile, photographed by Bobby McCabe
fig. b Bobby McCabe, CC BY 4.0 / obs. 160584044
Xanthisma gracile, photographed by Brian Finzel
fig. c Brian Finzel, CC BY-SA 4.0 / obs. 173805756
Xanthisma gracile, photographed by Alexis López Hernández
fig. d Alexis López Hernández, CC BY 4.0 / obs. 95255885
Xanthisma gracile, photographed by Alexis López Hernández
fig. e Alexis López Hernández, CC BY 4.0 / obs. 96830404
Xanthisma gracile, photographed by Alexis López Hernández
fig. f Alexis López Hernández, CC BY 4.0 / obs. 96830309
Xanthisma gracile, photographed by Jared Shorma
fig. g Jared Shorma, CC BY 4.0 / obs. 53911520
Xanthisma gracile, photographed by CK2AZ
fig. h CK2AZ, CC BY 4.0 / obs. 27191016

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 9 botanical countries

Regions where Xanthisma gracile is native: Arizona, California, Colorado, Mexico Northeast, Mexico Northwest, Nevada, New Mexico, Texas, Utah ArizonaCaliforniaColoradoMexico NortheastMexico NorthwestNevadaNew MexicoTexasUtah
Native distribution of Xanthisma gracile, 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.
RegionTDWG codeContinent
Arizona ARI NORTHERN AMERICA
California CAL
Colorado COL
Mexico Northeast MXE
Mexico Northwest MXN
Nevada NEV
New Mexico NWM
Texas TEX
Utah UTA

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.

Also published as 7 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 dieteria Kuntze
  • Dieteria gracilis Nutt.
  • Eriocarpum gracile (Nutt.) Greene
  • Haplopappus gracilis A.Gray
  • Haplopappus ravenii R.C.Jacks.
  • Machaeranthera gracilis (Nutt.) Shinners
  • Sideranthus gracilis (Nutt.) A.Nelson

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.
  3. Wikidata. common name (P1843), joined on the World Flora Online identifier (P7715). CC0. Retrieved 2026-07-13.
  4. 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.