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Hesperostipa comata - Achnatherum hymenoides Grassland | NatureServe Biotics 2019
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Name: Hesperostipa comata - Achnatherum hymenoides Grassland Reference: NatureServe Biotics 2019 Description: This grassland association has been described from western Colorado, northeastern Utah and south-central Wyoming. Stands develop on benches, plateaus and ridges ranging in elevation from 1550 to 2750 m (5085-9015 feet). The stands reported from northwestern Colorado resulted from burning sagebrush shrublands on sandy soils. Slopes are gentle to moderately steep and may be oriented to any aspect. Soils tend to be well-drained, deep and sandy, although they may be derived from a variety of sources. The unvegetated ground surface is mostly covered by litter and bare ground. This grassland occurs in small to medium-sized patches, often in sagebrush shrublands that have burned. Total vegetation cover often does not exceed 40% and may be as low as 20%. <i>Hesperostipa comata</i> and <i>Achnatherum hymenoides</i> codominate the vegetation, and <i>Pascopyrum smithii</i> and <i>Elymus elymoides</i> are common secondary species. Forbs have moderate diversity but are inconsistent among sites; common species include <i>Phlox hoodii, Eriogonum flavum</i>, and <i>Sphaeralcea coccinea</i>. Scattered shrubs are often present, including <i>Artemisia tridentata ssp. wyomingensis, Krascheninnikovia lanata, Gutierrezia sarothrae</i>, and <i>Ericameria nauseosa</i>.  Accession Code: urn:lsid:vegbank.org:commConcept:30612-{0774F859-F3A2-4332-9A9D-F6C9092EEFCA} Plot-observations of this Community Concept: 0
	Party Perspective according to: NatureServe (organization) Perspective from: 29-Aug-2005 to: ongoing
	status: accepted Community's Parent: Hesperostipa comata Grassland Alliance This Community's Level: Association This Community's Children: [none]		Names:   UID: ELEMENT_GLOBAL.2.685209 NatureServe Explorer   Code: CEGL001703   Translated: Needle-and-Thread - Indian Ricegrass Grassland   Common: Needle-and-Thread - Indian Ricegrass Mixedgrass Prairie   Scientific: Hesperostipa comata - Achnatherum hymenoides Grassland (convergence) and Synonyms: (similar) Hesperostipa comata - Achnatherum hymenoides Herbaceous Vegetation (similar) CEGL001703 (similar) Hesperostipa comata - Achnatherum hymenoides Herbaceous Vegetation