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Geum rossii - Sibbaldia procumbens Alpine Snowbed | NatureServe Biotics 2019
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Name: Geum rossii - Sibbaldia procumbens Alpine Snowbed Reference: NatureServe Biotics 2019 Description: This vegetation association has been described from alpine snowbanks of the Front Range of Colorado. Stands occur on sites where moderate (1-2 m) snow accumulates, in areas protected from the prevailing winter winds, such as the lee sides of knobs, ridges and saddles. Aspects are often southerly or easterly. This is a late-melting snowbed community that occurs on gentle to moderate slopes to undulating terraces (from solifluction). Sites remain saturated until snowbanks are melted in early to mid July, and then soils warm and dry rapidly. Soils are shallow to moderately deep, well-drained, gravelly, sandy loam. Soil surface has high cover of gravel, rock, and bare ground. The vegetation is characterized by an to open to moderately dense vascular herbaceous layer (10-50%) composed of <i>Geum rossii</i> and <i>Sibbaldia procumbens</i> and a number of associates. <i>Selaginella densa</i> is often a dominant plant species (about 20% cover). Associated species with low cover are <i>Artemisia norvegica, Artemisia scopulorum, Carex elynoides, Erigeron simplex, Festuca brachyphylla, Lewisia pygmaea, Minuartia obtusiloba, Polygonum bistortoides, Ranunculus adoneus, Solidago simplex var. nana, Trifolium parryi</i>, and <i>Trisetum spicatum</i>. Cryptograms generally are poorly represented. Diagnostic of this snowbed community is the dominance of <i>Geum rossii</i> and <i>Sibbaldia procumbens</i>.  Accession Code: urn:lsid:vegbank.org:commConcept:30878-{40343ADA-5985-409B-98FF-AC093472D544} Plot-observations of this Community Concept: 0
	Party Perspective according to: NatureServe (organization) Perspective from: 13-Jan-2005 to: ongoing
	status: accepted Community's Parent: Juncus drummondii - Juncus parryi - Sibbaldia procumbens Rocky Mountain Alpine Snowbed Alliance This Community's Level: Association This Community's Children: [none]		Names:   UID: ELEMENT_GLOBAL.2.683954 NatureServe Explorer   Code: CEGL001969   Translated: Ross' Avens - Creeping Sibbaldia Alpine Snowbed   Scientific: Geum rossii - Sibbaldia procumbens Alpine Snowbed (convergence) and Synonyms: (similar) Geum rossii - Sibbaldia procumbens Herbaceous Vegetation (similar) CEGL001969 (similar) Geum rossii - Sibbaldia procumbens Herbaceous Vegetation