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Purshia tridentata / Festuca campestris Shrub Grassland | NatureServe Biotics 2019
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Name: Purshia tridentata / Festuca campestris Shrub Grassland Reference: NatureServe Biotics 2019 Description: This association has been documented from Montana west of the Continental Divide and north of 47°N latitude; it has not been described from adjacent states or Canadian provinces. Stands occur in the 30-50 cm precipitation zone at elevations ranging 915-1525 m (3000-5000 feet), on confined granitic substrates with steep (&gt;35%), south- through east-facing slopes. This type occurs primarily as small patches to approaching large patch status, the dominant aspect of which is robust bunchgrasses. Shrub cover, contributed almost wholly by <i>Purshia tridentata</i>, generally does not exceed 20% and may be considerably less (approaching 5%) where browsing pressure from both domestic stock and wild ungulates has been intensive. <i>Pseudoroegneria spicata</i> and <i>Festuca idahoensis</i> are the dominant graminoids. <i>Festuca campestris</i> is also well represented and diagnostic for the type, indicative of the favorable moisture conditions which set this type apart from ~<i>Purshia tridentata / Pseudoroegneria spicata</i> Shrub Grassland (CEGL001495)$$ and ~<i>Purshia tridentata / Festuca idahoensis</i> Shrub Grassland (CEGL002674)$$, which typically occur on drier sites (or outside the geographic range of <i>Festuca campestris</i>). The forb component is dominated by <i>Balsamorhiza sagittata</i>. <i>Achillea millefolium, Collinsia parviflora, Lithospermum ruderale</i> and <i>Lomatium triternatum</i> are regularly present with lesser canopy cover.  Accession Code: urn:lsid:vegbank.org:commConcept:30403-{FE8B70D7-C608-4914-9B6A-6A5DE00BE6BB} Plot-observations of this Community Concept: 0
	Party Perspective according to: NatureServe (organization) Perspective from: 26-Nov-1997 to: ongoing
	status: accepted Community's Parent: Purshia tridentata - Artemisia tridentata Mesic Steppe & Shrubland Alliance This Community's Level: Association This Community's Children: [none]		Names:   UID: ELEMENT_GLOBAL.2.684484 NatureServe Explorer   Code: CEGL001494   Translated: Antelope Bitterbrush / Rough Fescue Shrub Grassland   Scientific: Purshia tridentata / Festuca campestris Shrub Grassland (convergence) and Synonyms: (similar) Purshia tridentata / Festuca campestris Shrub Herbaceous Vegetation (similar) CEGL001494 (similar) Purshia tridentata / Festuca campestris Shrub Herbaceous Vegetation