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Pinus ponderosa / Spiraea betulifolia Forest | NatureServe Biotics 2019
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Name: Pinus ponderosa / Spiraea betulifolia Forest Reference: NatureServe Biotics 2019 Description: This is a montane woodland or forest type found on mesic sites on the eastern flank of the Bighorn Mountains of north-central Wyoming at moderate elevations of 1650 to 1800 m (5400-5900 feet). This association occupies easterly slopes that are somewhat steep to steep (23-28°). Soils are sandy loams, derived from granitic parent materials. The overstory is formed by <i>Pinus ponderosa</i>, and the understory is a mixture of low shrubs, grasses, and forbs dominated by the low shrubs <i>Spiraea betulifolia</i> and (often) <i>Symphoricarpos albus</i>. Conspicuous by their absence are <i>Rhus trilobata, Physocarpus monogynus</i>, and <i>Pseudoroegneria spicata</i>. The herbaceous layer is a mix of perennial forbs and graminoids, averaging 25-30% cover. Important grasses include <i>Festuca idahoensis, Leucopoa kingii</i>, and <i>Poa palustris</i>. Common forbs include <i>Balsamorhiza sagittata, Clematis columbiana, Galium boreale, Lupinus argenteus</i>, and <i>Maianthemum racemosum</i>. Nonvascular species are present, but not abundant. Sites supporting this association are more mesic than sites supporting ~<i>Pinus ponderosa / Pseudoroegneria spicata</i> Woodland (CEGL000865)$$ and ~<i>Pinus ponderosa / Festuca idahoensis</i> Woodland (CEGL000857)$$, and drier than ~<i>Pinus ponderosa / Physocarpus monogynus</i> Forest (CEGL000190)$$ sites.  Accession Code: urn:lsid:vegbank.org:commConcept:29111-{8B99F8B0-777E-4AA5-BDB3-28946B4B2180} Plot-observations of this Community Concept: 0
	Party Perspective according to: NatureServe (organization) Perspective from: 26-Nov-1997 to: ongoing
	status: accepted Community's Parent: Pinus ponderosa / Shrub Understory Central Rocky Mountain Woodland Alliance This Community's Level: Association This Community's Children: [none]		Names:   UID: ELEMENT_GLOBAL.2.683636 NatureServe Explorer   Code: CEGL000202   Translated: Ponderosa Pine / Shinyleaf Meadowsweet Forest   Scientific: Pinus ponderosa / Spiraea betulifolia Forest (convergence) and Synonyms: (similar) CEGL000202 (similar) Pinus ponderosa / Spiraea betulifolia Forest (similar) Pinus ponderosa / Spiraea betulifolia Forest