Eriocoma robusta(Vasey) Romasch.

sleepygrass

WFO wfo-1000032243 Accepted WFO 2026-06 3 photographs CC BY

Plate 1 figs. a–c · 1 observation

This species has been photographed under an open licence only 1 time, so some figures below are different views of the same plant, taken on the same day, rather than different individuals. They are usually different parts of it: the leaf, the flower, the bark.

Eriocoma robusta, photographed by CK2AZ
fig. a CK2AZ, CC BY 4.0 / 2020-10-20 / obs. 101456872
Eriocoma robusta, photographed by CK2AZ
fig. b CK2AZ, CC BY 4.0 / obs. 101456881
Eriocoma robusta, photographed by CK2AZ
fig. c CK2AZ, CC BY 4.0 / obs. 101456893

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.

The specimen a real sheet, in a real collection

Herbarium
Smithsonian, US National Herbarium
Accession
US 2013055
Filed as
Eriocoma robusta (Vasey) Romasch.
Det. by
Poaceae Reorganization Project
Collected
-. Stanford, -. Lauber & -- Taylor 1949-07-16
Origin
MX
The sheet
View the digitised specimen (CC0 1.0)

A real pressed plant, in a real collection, under the accession number above. Not an illustration of one. The holding institution does not serve this sheet’s image to third parties, so there is no photograph here. The record is real and the link goes to it. Where we hold no openly licensed sheet for a species this section is simply absent, and where a sheet never recorded who determined it, that field stays empty rather than being filled in. Roughly half of all herbarium sheets never recorded a determiner, which is ordinary.

Native range 9 botanical countries

Regions where Eriocoma robusta is native: Arizona, Colorado, Kansas, Mexico Northeast, Nebraska, New Mexico, South Dakota, Texas, Wyoming ArizonaColoradoKansasMexico NortheastNebraskaNew MexicoSouth DakotaTexasWyoming
Native distribution of Eriocoma robusta, 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
Colorado COL
Kansas KAN
Mexico Northeast MXE
Nebraska NEB
New Mexico NWM
South Dakota SDA
Texas TEX
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.

Also published as 4 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.

  • Achnatherum robustum (Vasey) Barkworth
  • Stipa robusta (Vasey) Scribn.
  • Stipa vaseyi Scribn.
  • Stipa viridula var. robusta Vasey

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 ACRO7. 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.