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Carex helleri - Eriogonum incanum - Raillardella argentea Herbaceous Vegetation | Western Ecology Working Group of...
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Name: Carex helleri - Eriogonum incanum - Raillardella argentea Herbaceous Vegetation Reference: Western Ecology Working Group of... Description: This herbaceous 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. This alpine herbaceous/grassland association grows in snow patches that often persist until late July. Elevation averages about 3200 m (10,500 feet). Slopes are gentle to moderately steep, and aspects are north to east. Stands are found on upper slopes and ridges with rapidly drained gravely loams or sandy loams derived from metamorphic parent material. This alpine grassland forms an open canopy of forbs and graminoids less than 0.5 m in height. Total cover is less than 50%. <i>Raillardella argentea</i> and <i>Eriogonum incanum</i> are the diagnostic forbs, though <i>Arenaria kingii</i> may be dominant in some stands. Other forbs that provide trace cover may include <i>Arabis platysperma, Castilleja nana, Cistanthe monosperma, Draba densifolia, Lupinus confertus, Penstemon heterodoxus</i>, and/or <i>Silene sargentii</i>. Perennial graminoids only provide a small portion of total cover with most species averaging about 1% cover. Diagnostic graminoid species include <i>Carex helleri, Carex breweri, Carex straminiformis</i>, and/or <i>Carex subnigricans</i>. Other graminoid associates may include <i>Trisetum spicatum, Achnatherum occidentale, Elymus elymoides</i>, and/or <i>Agoseris glauca</i>.  Accession Code: VB.CC.34058.CEGL003138 Plot-observations of this Community Concept: 0
	Party Perspective according to: NatureServe (organization) Perspective from: 17-Nov-2014 to: 01-May-2019
	status: accepted This Community's Level: association This Community's Children: [none]		Names:   UID: ELEMENT_GLOBAL.2.686138 NatureServe Explorer   Translated: Heller's Sedge - Frosted Buckwheat - Silky Raillardella Herbaceous Vegetation   Scientific: Carex helleri - Eriogonum incanum - Raillardella argentea Herbaceous Vegetation   Code: CEGL003138