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Podistera nevadensis - Elymus elymoides - Erigeron pygmaeus Alpine Fell-field | NatureServe Biotics 2019
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Name: Podistera nevadensis - Elymus elymoides - Erigeron pygmaeus Alpine Fell-field Reference: NatureServe Biotics 2019 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. Stands of this alpine association occur on talus slopes and ridgelines at between 3500 and 3810 m (11,500-12,500 feet) elevation. Slopes are moderate to steep. Aspects are south and west, and sites are probably free of snow early in the season followed by a long, droughty summer. Soils are well-drained and gravelly with significant talus, scree, or cobble. This sparse alpine herbaceous vegetation is characterized by a low (&lt;0.5 m) open canopy of forbs and graminoids. <i>Podistera nevadensis</i> is a diagnostic forb, occurring in 75% of stands. <i>Elymus elymoides ssp. californicus</i> is also diagnostic and one of the most common graminoids. Other common forb associates may include <i>Phlox pulvinata, Eriogonum ovalifolium, Selaginella watsonii, Draba densifolia, Astragalus kentrophyta</i>, and/or <i>Erigeron pygmaeus</i>. Graminoids present commonly include <i>Festuca brachyphylla ssp. brachyphylla</i> and/or <i>Poa glauca ssp. rupicola</i>.  Accession Code: urn:lsid:vegbank.org:commConcept:32371-{2D72CCC3-9CE1-4CAA-9FAC-810BE679A934} Plot-observations of this Community Concept: 0
	Party Perspective according to: NatureServe (organization) Perspective from: 06-Apr-2012 to: ongoing
	status: accepted Community's Parent: Phlox covillei - Ericameria discoidea Alpine Fell-field Alliance This Community's Level: Association This Community's Children: [none]		Names:   UID: ELEMENT_GLOBAL.2.685369 NatureServe Explorer   Code: CEGL003489   Translated: Sierran Woodroot - Squirreltail - Pygmy Fleabane Alpine Fell-field   Scientific: Podistera nevadensis - Elymus elymoides - Erigeron pygmaeus Alpine Fell-field (convergence) and Synonyms: (similar) Podistera nevadensis - Elymus elymoides - Erigeron pygmaeus Herbaceous Vegetation