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Heracleum maximum - Rudbeckia occidentalis Wet Meadow | NatureServe Biotics 2019
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Name: Heracleum maximum - Rudbeckia occidentalis Wet Meadow Reference: NatureServe Biotics 2019 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, Carex hoodii, Elymus trachycaulus</i>, and <i>Festuca idahoensis</i>.  Accession Code: urn:lsid:vegbank.org:commConcept:30849-{40D720C2-319D-459C-B9F0-7B6C2AA18F46} Plot-observations of this Community Concept: 0
	Party Perspective according to: NatureServe (organization) Perspective from: 16-Aug-2005 to: ongoing
	status: accepted Community's Parent: Heracleum maximum - Veratrum californicum - Rorippa spp. Wet Meadow Alliance This Community's Level: Association This Community's Children: [none]		Names:   UID: ELEMENT_GLOBAL.2.688738 NatureServe Explorer   Code: CEGL001940   Translated: Common Cow-parsnip - Western Coneflower Wet Meadow   Scientific: Heracleum maximum - Rudbeckia occidentalis Wet Meadow (convergence) and Synonyms: (similar) Heracleum maximum - Rudbeckia occidentalis Herbaceous Vegetation (similar) CEGL001940 (similar) Heracleum maximum - Rudbeckia occidentalis Herbaceous Vegetation