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Heracleum maximum - Rudbeckia occidentalis Herbaceous Vegetation | Gregory, S. 1983. Subalpine forb...
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Name: Heracleum maximum - Rudbeckia occidentalis Herbaceous Vegetation
Reference: Gregory, S. 1983. Subalpine forb...
Description: This association is a rich meadow type known only from northwestern Wyoming, but it is well-documented with 24 plots. It occurs primarily in the subalpine zone, at elevations of 1700 to 2700 m (6450-8900 feet), on moderate to steep slopes (average 17%), up to 40%. It occurs on benches and lower slopes of moist pockets facing any aspect; the local topography is even to concave, and stands are generally moist throughout the summer. Soils are rich with clay and organic matter; textures include silty clay loam to sandy clay. It is dominated by tall forbs, characterized by the presence of one or more of the species <i>Heracleum maximum, Rudbeckia occidentalis</i>, or <i>Thalictrum fendleri</i>. Usually two of the three species will be abundant, although stands do occur with only one of the three species present. Other forbs commonly present include <i>Achillea millefolium, Delphinium x occidentale</i>, and <i>Geranium viscosissimum</i>. Graminoids are typically present but in lower abundance than all forbs combined. Graminoid species include <i>Poa pratensis, Bromus vulgaris, Bromus carinatus, Elymus caninus (= Agropyron caninum), Carex hoodii, Elymus trachycaulus</i>, and <i>Festuca idahoensis</i>. 
Accession Code: VB.CC.37247.CEGL001940
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:   Translated: Common Cow-parsnip - Western Coneflower Herbaceous Vegetation
  Scientific: Heracleum maximum - Rudbeckia occidentalis Herbaceous Vegetation
  Code: CEGL001940
  UID: ELEMENT_GLOBAL.2.688738 NatureServe ExplorerNatureServe Explorer logo