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Achnatherum nelsonii ssp. nelsonii

Achnatherum nelsonii (Scribn.) Barkworth ssp. nelsonii

Columbia Needlegrass, Mountain Needle Grass

Poaceae (Grass family)

Synonym(s): Stipa columbiana var. nelsonii, Stipa nelsonii, Stipa occidentalis var. nelsonii, Stipa williamsii


USDA Native Status: L48 (N), CAN (N)


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Plant Characteristics

Duration: Perennial
Habit: Grass/Grass-like
Fruit Type: Caryopsis
Size Notes: Up to about 6 feet tall.

Bloom Information

Bloom Color: Green , Purple , Brown
Bloom Time: Jun , Jul , Aug , Sep


USA: AZ , CO , ID , MT , NV , UT , WY
Canada: SK
Native Habitat: Meadows and open woodlands, from sagebrush steppe and pinyon-juniper woodlands to subalpine forests.

Web Reference

Webref 30 - Calflora (2018) Calflora
Webref 32 - Grasses of Canada, the U.S., and Mexico - North America north of Mexico (all countries, provinces, states, territories) (2019) Open Herbarium (

Additional resources

USDA: Find Achnatherum nelsonii ssp. nelsonii in USDA Plants
FNA: Find Achnatherum nelsonii ssp. nelsonii in the Flora of North America (if available)
Google: Search Google for Achnatherum nelsonii ssp. nelsonii


Record Modified: 0000-00-00
Research By: CBR

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