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Calamagrostis purpurascens - Leptodactylon pungens Herbaceous Vegetation | Western Ecology Working Group of...
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Name: Calamagrostis purpurascens - Leptodactylon pungens 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 association grows in a fairly wide variety of xeric alpine habitats at elevations ranging from 2900-3230 m (9500-10,600 feet). Slopes can be moderate to fairly steep, and aspects are highly variable. Some stands grow in seasonally saturated soils in convex basins, while others are on xeric lower to middle slopes. Soils are rocky, well-drained and derived from metamorphic parent materials, but range in texture from sands to silt loams. This highly diverse herbaceous association is characterized by an intermittent canopy of graminoids and forbs with <i>Calamagrostis purpurascens</i> an important species. <i>Leptodactylon pungens</i> is diagnostic for this association, and its preferred habitat is well-drained rocky sites. <i>Elymus elymoides</i> is a fairly frequent graminoid associate, but at least 13 other graminoids have been recorded in stands at low cover values and frequencies. Traces of cover may be provided by the graminoids <i>Carex exserta, Achnatherum pinetorum, Calamagrostis canadensis, Carex heteroneura, Carex leporinella, Carex subnigricans, Festuca</i> spp., and/or <i>Poa</i> spp. The most important forbs are <i>Penstemon davidsonii, Ericameria discoidea, Minuartia nuttallii</i>, and traces of <i>Castilleja nana, Eriogonum ovalifolium</i>, and/or <i>Potentilla gracilis</i>. A few, scattered, emergent shrubs may be present, including krummholz <i>Pinus albicaulis</i> and/or <i>Salix planifolia</i>.  Accession Code: VB.CC.34398.CEGL008658 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.2.688315 NatureServe Explorer   Translated: Purple Reedgrass - Granite Prickly-phlox Herbaceous Vegetation   Scientific: Calamagrostis purpurascens - Leptodactylon pungens Herbaceous Vegetation   Code: CEGL008658