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Achnatherum richardsonii
Achnatherum richardsonii (Link) Barkworth
Richardson's Needlegrass
Poaceae (Grass Family)
Synonym(s): Stipa richardsonii
USDA Symbol: ACRI8
USDA Native Status: L48 (N), AK (I), CAN (N)
From the Image Gallery
Plant Characteristics
Duration: PerennialHabit: Grass/Grass-like
Root Type: Fibrous
Leaf Arrangement: Alternate
Leaf Complexity: Simple
Leaf Venation: Parallel
Inflorescence: Spikelet
Fruit Type: Caryopsis
Size Notes: Up to about 3 feet tall.
Bloom Information
Bloom Color: White , Green , BrownBloom Time: Jul , Aug , Sep
Bloom Notes: The florets (flowers) of grasses are usually minute and thus inconspicuous.
Distribution
USA: CO , ID , MT , SD , WA , WYCanada: BC
Native Habitat: Prairie/Meadow/Field
Growing Conditions
Light Requirement: SunSoil Moisture: Moist
Benefit
Attracts: BirdsLarval Host: The Grass Family is an essential larval food for most branded skippers and most of the satyrs.
National Wetland Indicator Status
Region: | AGCP | AK | AW | CB | EMP | GP | HI | MW | NCNE | WMVE |
Status: | FACU | UPL | FACU | UPL |
Web Reference
Webref 38 - Flora of North America (2019) Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.Webref 23 - Southwest Environmental Information Network (2009) SEINet - Arizona Chapter
Additional resources
USDA: Find Achnatherum richardsonii in USDA PlantsFNA: Find Achnatherum richardsonii in the Flora of North America (if available)
Google: Search Google for Achnatherum richardsonii
Metadata
Record Modified: 2022-10-31Research By: TWC Staff