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Purshia tridentata - Artemisia tridentata / Achnatherum hymenoides Shrubland | NatureServe Biotics 2019
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Name: Purshia tridentata - Artemisia tridentata / Achnatherum hymenoides Shrubland Reference: NatureServe Biotics 2019 Description: This shrubland association is currently only known from Yosemite National Park in California, and the following description is based on occurrences there. Additional information will be added as it becomes available. Stands of this association are found between 1980 and 2380 m (6500-7800 feet) elevation on northeast to southeast aspects. Slopes vary from flat to somewhat steep, and stands prefer lower slope positions. Soils are sand to sandy loam, usually derived from granitic rock. This vegetation is characterized by an open to intermittent short-shrub canopy between 0.5-1 m in height. <i>Artemisia tridentata</i> and <i>Purshia tridentata</i> codominate, with trace amounts of <i>Chrysothamnus viscidiflorus</i> and <i>Prunus andersonii</i> often present. The herbaceous layer is sparse and dominated by graminoids. <i>Achnatherum hymenoides</i> is characteristic. Two forbs, <i>Gayophytum ramosissimum</i> and <i>Lupinus argenteus</i>, are often present in trace amounts. <i>Bromus tectorum</i> (exotic) is the most common graminoid. Other common graminoids in order of declining importance include <i>Elymus elymoides, Leymus cinereus</i>, and/or <i>Achnatherum speciosum</i>.  Accession Code: urn:lsid:vegbank.org:commConcept:32360-{6ADDF063-3572-4E9D-A18A-4839782BAF26} Plot-observations of this Community Concept: 0
	Party Perspective according to: NatureServe (organization) Perspective from: 06-May-2010 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.2.687207 NatureServe Explorer   Code: CEGL003478   Translated: Antelope Bitterbrush - Big Sagebrush / Indian Ricegrass Shrubland   Scientific: Purshia tridentata - Artemisia tridentata / Achnatherum hymenoides Shrubland (convergence) and Synonyms: (similar) Purshia tridentata - Artemisia tridentata / Achnatherum hymenoides Shrubland