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Purshia tridentata / Artemisia frigida / Hesperostipa comata Shrubland | NatureServe Biotics 2019
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Name: Purshia tridentata / Artemisia frigida / Hesperostipa comata Shrubland Reference: NatureServe Biotics 2019 Description: This shrubland association is described from north-central Colorado, along the eastern slopes of the northern Front Range, on the Arapaho-Roosevelt National Forest. Best developed examples are in the Cache La Poudre River drainage in a narrowly restricted latitudinal range. Sites where this association is found are steep to very steep (30-55%) mountain slopes with southerly aspects from 1770-2350 m (5800-7700 feet) elevation and are too xeric to support coniferous woodland. Parent materials are colluvium of schist and gneiss origins which have developed into soils classified as Entisols. These soils are poorly developed, coarse-textured and rocky, with loamy and sandy textures. There is typically a shallow A horizon over a cambic B horizon over rocky C horizons. The soil surface is also moderately rocky. The broad-leaved, semi-evergreen shrub <i>Purshia tridentata</i> averages 30% cover in this shrubland association, with heights of 1-2 m. Other shrubs are poorly represented. <i>Artemisia frigida</i> is present in all stands, averaging 4% cover. The herbaceous layer is moderately dense to relatively sparse and dominated by the 0.5-m tall perennial bunchgrass <i>Hesperostipa comata</i>. Other important species present in lesser amounts include perennial grasses <i>Bouteloua gracilis</i> and <i>Elymus albicans</i>, and the perennial forbs <i>Heterotheca villosa, Eriogonum umbellatum, Helianthus pumilus</i>, and <i>Scutellaria brittonii</i>.  Accession Code: urn:lsid:vegbank.org:commConcept:29964-{6D1F806E-1F37-4EDF-9546-DC3043EA1A33} Plot-observations of this Community Concept: 0
	Party Perspective according to: NatureServe (organization) Perspective from: 04-Aug-2005 to: ongoing
	status: accepted Community's Parent: Purshia tridentata - Ribes cereum Shrubland Alliance This Community's Level: Association This Community's Children: [none]		Names:   UID: ELEMENT_GLOBAL.2.687443 NatureServe Explorer   Code: CEGL001055   Translated: Antelope Bitterbrush / Prairie Sagewort / Needle-and-Thread Shrubland   Scientific: Purshia tridentata / Artemisia frigida / Hesperostipa comata Shrubland (convergence) and Synonyms: (similar) CEGL001055 (similar) Purshia tridentata / Artemisia frigida / Hesperostipa comata Shrubland (similar) Purshia tridentata / Artemisia frigida / Hesperostipa comata Shrubland