Bouteloua barbataLag.

sixweeks grama

WFO wfo-0000853868 Accepted WFO 2026-06 8 photographs CC0 / CC BY

Plate 1 figs. a–h · 8 separate observations

Bouteloua barbata, photographed by Bobby McCabe
fig. a Bobby McCabe, CC BY 4.0 / 2022-03-28 / obs. 185103337
Bouteloua barbata, photographed by Rachel Stringham
fig. b Rachel Stringham, CC BY 4.0 / obs. 161747737
Bouteloua barbata, photographed by Daniel McNair
fig. c Daniel McNair, CC BY 4.0 / obs. 153602935
Bouteloua barbata, photographed by Karla M. Benítez
fig. d Karla M. Benítez, CC BY 4.0 / obs. 154277973
Bouteloua barbata, photographed by Bobby McCabe
fig. e Bobby McCabe, CC BY 4.0 / obs. 145909327
Bouteloua barbata, photographed by johnyochum
fig. f johnyochum, CC BY 4.0 / obs. 91037819
Bouteloua barbata, photographed by Cleveland Powell
fig. g Cleveland Powell, CC BY 4.0 / obs. 80195449
Bouteloua barbata, photographed by Cecelia Alexander
fig. h Cecelia Alexander, CC0 1.0 / obs. 11481244

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 16 botanical countries

Regions where Bouteloua barbata is native: Arizona, California, Colorado, Kansas, Mexico Northeast, Mexico Northwest, Mexico Southwest, Montana, Nevada, New Mexico, Oklahoma, Oregon, Texas, Utah, Argentina Northeast, Argentina Northwest ArizonaCaliforniaColoradoKansasMexico NortheastMexico NorthwestMexico SouthwestMontanaNevadaNew MexicoOklahomaOregonTexasUtahArgentina NortheastArgentina Northwest
Native distribution of Bouteloua barbata, 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
Kansas KAN
Mexico Northeast MXE
Mexico Northwest MXN
Mexico Southwest MXS
Montana MNT
Nevada NEV
New Mexico NWM
Oklahoma OKL
Oregon ORE
Texas TEX
Utah UTA
Argentina Northeast AGE SOUTHERN AMERICA
Argentina Northwest AGW

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 23 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.

  • Actinochloa barbata (Lag.) Roem. & Schult.
  • Bouteloua arenosa Vasey
  • Bouteloua barbata var. arenosa (Vasey) Beetle
  • Bouteloua barbata var. major (Vasey) Govaerts
  • Bouteloua barbata var. rothrockii (Vasey) Gould
  • Bouteloua barbata var. sonorae (Griffiths) Gould
  • Bouteloua micrantha Scribn. & Merr.
  • Bouteloua microstachya (E.Fourn.) L.H.Dewey ex J.M.Coult.
  • Bouteloua polystachya (Benth.) Torr.
  • Bouteloua polystachya var. major Vasey
  • Bouteloua pumila Buckley
  • Bouteloua rothrockii Vasey
  • Bouteloua sonorae Griffiths
  • Chondrosum barbatum (Lag.) Clayton
  • Chondrosum barbatum var. rothrockii (Vasey) R.B.Shaw & Wipff
  • Chondrosum exile E.Fourn. ex Hemsl.
  • Chondrosum microstachyum E.Fourn.
  • Chondrosum polystachyum Benth.
  • Chondrosum rothrockii (Vasey) Wipff
  • Chondrosum sonorae (Griffiths) Wipff
  • Chondrosum subscorpioides Müll.Hal.
  • Erucaria tetrastachya Cerv.
  • Eutriana barbata (Lag.) Kunth

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.