Poa secundaJ.Presl

Sandberg bluegrass

WFO wfo-0000893736 Accepted WFO 2026-06 8 photographs CC0 / CC BY

Plate 1 figs. a–h · 8 separate observations

Poa secunda, photographed by Cecelia Alexander
fig. a Cecelia Alexander, CC0 1.0 / 2022-06-10 / obs. 205000362
Poa secunda, photographed by Dominic Gentilcore
fig. b Dominic Gentilcore, CC BY 4.0 / obs. 135614088
Poa secunda, photographed by Caleb Catto
fig. c Caleb Catto, CC BY 4.0 / obs. 134042992
Poa secunda, photographed by Nina House
fig. d Nina House, CC BY 4.0 / obs. 172485685
Poa secunda, photographed by mark-groeneveld
fig. e mark-groeneveld, CC BY 4.0 / obs. 126677613
Poa secunda, photographed by John Brew
fig. f John Brew, CC BY 4.0 / obs. 107426462
Poa secunda, photographed by John Brew
fig. g John Brew, CC BY 4.0 / obs. 107426687
Poa secunda, photographed by David Anderson
fig. h David Anderson, CC BY 4.0 / obs. 63262972

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 31 botanical countries

Regions where Poa secunda is native: Alaska, Alberta, Arizona, British Columbia, California, Colorado, Idaho, Maine, Mexican Pacific Is., Mexico Northwest, Michigan, Minnesota, Montana, Nebraska, Nevada, New Mexico, North Dakota, Northwest Territories, Oklahoma, Ontario, Oregon, Québec, Saskatchewan, South Dakota, Utah, Washington, Wyoming, Yukon, Argentina South, Chile Central, Chile South AlaskaAlbertaArizonaBritish ColumbiaCaliforniaColoradoIdahoMaineMexico NorthwestMichiganMinnesotaMontanaNebraskaNevadaNew MexicoNorth DakotaNorthwest TerritoriesOklahomaOntarioOregonQuébecSaskatchewanSouth DakotaUtahWashingtonWyomingYukonArgentina SouthChile CentralChile South
Native distribution of Poa secunda, 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
Alaska ASK NORTHERN AMERICA
Alberta ABT
Arizona ARI
British Columbia BRC
California CAL
Colorado COL
Idaho IDA
Maine MAI
Mexican Pacific Is. MXI
Mexico Northwest MXN
Michigan MIC
Minnesota MIN
Montana MNT
Nebraska NEB
Nevada NEV
New Mexico NWM
North Dakota NDA
Northwest Territories NWT
Oklahoma OKL
Ontario ONT
Oregon ORE
Québec QUE
Saskatchewan SAS
South Dakota SDA
Utah UTA
Washington WAS
Wyoming WYO
Yukon YUK
Argentina South AGS SOUTHERN AMERICA
Chile Central CLC
Chile South CLS

Not drawn on the map: Mexican Pacific Is.. We hold no public-domain boundary for this region, so it is listed rather than guessed at.

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 58 in flower of 100 examined

Peak flowering in Apr. Each bar is the share of Poa secunda 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. 58 of 100 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 76 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.

  • Aira brevifolia F.Dietr.
  • Aira brevifolia Pursh
  • Aira missurica Spreng. ex B.D.Jacks.
  • Airopsis brevifolia (Pursh) Roem. & Schult.
  • Atropis californica Munro ex A.Gray
  • Atropis canbyi (Scribn.) Beal
  • Atropis laevis Beal
  • Atropis laevis var. rigida Beal
  • Atropis nevadensis (Vasey) Beal
  • Atropis pauciflora Thurb.
  • Atropis scabrella Thurb.
  • Atropis tenuifolia Thurb.
  • Atropis tenuifolia var. stenophylla Vasey ex Beal
  • Festuca patagonica Phil.
  • Festuca spaniantha Phil.
  • Glyceria canbyi Scribn.
  • Paneion buckleyanum (Nash) Lundell
  • Paneion buckleyanum var. maius Lundell
  • Paneion sandbergii (Vasey) Lunell
  • Panicularia nuttalliana Kuntze
  • Panicularia scabrella (Thurb.) Kuntze
  • Panicularia thurberiana Kuntze
  • Poa acutiglumis Scribn.
  • Poa alcea Piper

and 52 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.
  3. USDA PLANTS Database. common name, checklist symbol POSE. public domain. 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.