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A.1645 | EcoArt 2002
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Name: A.1645
Reference: EcoArt 2002
Description: This alliance occurs in the alpine tundra throughout the Rocky Mountains. In winter, strong westerly winds deposit snow on the leeward side of the mountains, resulting in areas of deep snow that melt relatively late in the summer. Stands are found in these snowbed habitats on frost-patterned ground, and in depressions where fine soil particles concentrate. Sites occur on all aspects of gentle to moderate-gradient slopes. The soils are wet, poorly developed, and may have a high organic matter content. Vegetation included in this alliance is characterized by the perennial forb ~Geum rossii$ dominating the herbaceous layer. Common associates include ~Polygonum bistortoides, Trifolium parryi, Trifolium nanum, Artemisia scopulorum, Erigeron simplex, Potentilla diversifolia, Deschampsia caespitosa$, and ~Festuca brachyphylla$. The moss layer is sparse due to the dense herbaceous cover and ~Geum rossii$ litter that covers the ground. Diagnostic of this alpine alliance is the dominance of ~Geum rossii$ in the herbaceous layer. 
Accession Code: VB.CC.1400.A1645
Plot-observations of this Community Concept: 0
      Party Perspective according to: NatureServe (organization)
Perspective from: 26-Nov-1997 to: 17-Mar-2005
     
  • status: accepted
  • Community's Parent: V.B.2.N.b
  • This Community's Level: Alliance
  • This Community's Children: [none]
Names:   Scientific: GEUM ROSSII HERBACEOUS ALLIANCE
  Code: A.1645
  Common: Ross' Avens Herbaceous Alliance
(convergence) and Synonyms:
(undetermined) Geum rossii Herbaceous Alliance