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Pinus ponderosa / Spiraea betulifolia Forest | Western Ecology Working Group of...
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Name: Pinus ponderosa / Spiraea betulifolia Forest Reference: Western Ecology Working Group of... 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 (5400-5900 feet elevation). This association occupies easterly slopes that are somewhat steep to steep (23-28 degrees). Soils are sandy loams, derived from granitic parent materials. The overstory is formed by Pinus ponderosa, and the understory is a mixture of low shrubs, grasses, and forbs dominated by the low shrubs Spiraea betulifolia and (often) Symphoricarpos albus. Conspicuous by their absence are Rhus trilobata, Physocarpus monogynus, and Pseudoroegneria spicata (= Elymus spicatus). The herbaceous layer is a mix of perennial forbs and graminoids, averaging 25-30% cover. Important grasses include Festuca idahoensis, Leucopoa kingii (= Festuca kingii), and Poa palustris. Common forbs include Balsamorhiza sagittata, Clematis columbiana, Galium boreale, Lupinus argenteus, and Maianthemum racemosum (= Smilacina racemosa). Nonvascular species are present, but not abundant. Sites supporting this association are more mesic than sites supporting Pinus ponderosa / Pseudoroegneria spicata Woodland (CEGL000865) and Pinus ponderosa / Festuca idahoensis Woodland (CEGL000857), and drier than Pinus ponderosa / Physocarpus monogynus Forest (CEGL000190) sites.  Accession Code: VB.CC.18612.PINUSPONDEROSAS Plot-observations of this Community Concept: 0
	Party Perspective according to: NatureServe (organization) Perspective from: 26-Nov-1997 to: 17-Nov-2014
	status: accepted Community's Parent: Pinus ponderosa Forest Alliance This Community's Level: Association This Community's Children: [none]		Names:   Translated: Ponderosa Pine / Shinyleaf Meadowsweet Forest   UID: ELEMENT_GLOBAL.2.683636 NatureServe Explorer   Code: CEGL000202   Scientific: Pinus ponderosa / Spiraea betulifolia Forest   Common: Ponderosa Pine / Shinyleaf Spiraea Forest (convergence) and Synonyms: (undetermined) Pinus ponderosa / Spiraea betulifolia Forest