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Pinus contorta var. latifolia / Purshia tridentata / Achnatherum occidentale ssp. occidentale Woodland | Western Ecology Working Group of...
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Name: Pinus contorta var. latifolia / Purshia tridentata / Achnatherum occidentale ssp. occidentale Woodland Reference: Western Ecology Working Group of... Description: This association is found along the eastern flanks of the Cascade Range of central Oregon. It occurs at moderate elevations between 1280 and 1890 m (4200-6200 feet) with low-gradient slopes (0-15%) of all aspects. Soils are usually well-drained mixtures of sand and loam, generally on deep pumice. <i>Pinus contorta var. latifolia</i> is the predominant overstory tree (10-50% cover) with occasional <i>Pinus ponderosa</i> up to 7% cover. <i>Purshia tridentata</i> typically dominates the shrub layer (5-45% cover) with occasional <i>Ribes cereum var. cereum</i> (0-5% cover). The herb layer consists of <i>Achnatherum occidentale (= Stipa occidentalis)</i> with less than 5% cover and lesser amounts of <i>Penstemon cinicola, Lupinus caudatus, Fragaria virginiana, Carex rossii</i>, and <i>Eriogonum umbellatum</i>. The climax tree species are <i>Pinus contorta var. latifolia</i> and <i>Pinus ponderosa</i>, which respond well to periodic natural disturbance. This association is similar to ~<i>Pinus contorta</i> var. <i>latifolia / Purshia tridentata / Festuca idahoensis</i> Woodland (CEGL000160)$$ but has a more depauperate understory and lack of <i>Festuca idahoensis</i>.  Accession Code: VB.CC.33652.CEGL000162 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:   UID: ELEMENT_GLOBAL.2.686618 NatureServe Explorer   Translated: Tall Lodgepole Pine / Antelope Bitterbrush / Western Needlegrass Woodland   Scientific: Pinus contorta var. latifolia / Purshia tridentata / Achnatherum occidentale ssp. occidentale Woodland   Code: CEGL000162