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Agrostis variabilis Herbaceous Alliance | Western Ecology Working Group of...
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Name: Agrostis variabilis Herbaceous Alliance
Reference: Western Ecology Working Group of...
Description: Grasslands included in this alliance have been described from subalpine meadows in southern Utah, but may occur in subalpine and alpine meadows across the western U.S. and southwestern Canada. Stands are located on gentle slopes on any aspect, midway between temporarily flooded basins and rock outcrops, and may also occur on other somewhat mesic sites such as below talus slopes and along streams. The vegetation is a mixture of graminoids and diverse forbs. Agrostis variabilis, a cool-season bunchgrass, is the dominant and diagnostic species. Other associated graminoids include Carex engelmannii, Festuca brachyphylla, Blepharoneuron tricholepis, and Poa spp. Forbs actually dominate the herbaceous layer, but none are diagnostic in this alliance. The most common native perennial forbs are Achillea millefolium, Penstemon procerus, Cerastium beeringianum, Lupinus lepidus, Erigeron flagellaris, Antennaria parvifolia, and Veronica serpyllifolia. Annual forbs may also be common. The ground surface has significant cover of nonvascular plants such as lichens, liverworts, and mosses forming a cryptogamic crust. Diagnostic of this high elevation meadow is the dominance of Agrostis variabilis in a mixed graminoid/forb herbaceous layer. 
Accession Code: VB.CC.22371.AGROSTISVARIABI
Plot-observations of this Community Concept: 0
      Party Perspective according to: NatureServe (organization)
Perspective from: 26-Nov-1997 to: 01-May-2019
     
  • status: accepted
  • This Community's Level: Alliance
  • This Community's Children: [none]
Names:   Scientific: Agrostis variabilis Herbaceous Alliance
  Translated: Alpine Bentgrass Herbaceous Alliance
  UID: HIGHER_CLASS_UNIT.2.124681 NatureServe ExplorerNatureServe Explorer logo
  Code: A.1318