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Purshia (stansburiana, mexicana) Shrubland Alliance | Western Ecology Working Group of...
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Name: Purshia (stansburiana, mexicana) Shrubland Alliance Reference: Western Ecology Working Group of... Description: The vegetation in this alliance occurs at middle elevations (800-2000 m) of the Intermountain West, usually in washes, on cliffs, or on steep, rocky terrain. Precipitation averages 20-45 cm annually. These communities occur on skeletal soils derived from granitic or sedimentary parent materials. In central Utah the alliance is associated with limestone. These shrublands are dominated by Purshia mexicana, an erect evergreen shrub that grows up to 8 m tall, or Purshia stansburiana. Associated shrubs include Ericameria nauseosa (= Chrysothamnus nauseosus), Coleogyne ramosissima, Artemisia tridentata, and Yucca baccata. The herbaceous ground layer is typically sparse, but can be moderately dense in stands which have been invaded by non-native annual grasses. Typical native species include Sporobolus cryptandrus, Poa secunda, and Pseudoroegneria spicata. Adjacent vegetation is usually Pinus - Juniperus woodlands, Quercus gambelii shrublands, or Artemisia tridentata shrublands.  Accession Code: VB.CC.22125.PURSHIASTANSBUR Plot-observations of this Community Concept: 0
	Party Perspective according to: NatureServe (organization) Perspective from: 26-Nov-1997 to: 01-May-2019
	status: accepted This Community's Level: Alliance This Community's Children: [none]		Names:   Scientific: Purshia (stansburiana, mexicana) Shrubland Alliance   Translated: (Stansbury Cliff-rose, Mexican Cliff-rose) Shrubland Alliance   UID: HIGHER_CLASS_UNIT.2.124500 NatureServe Explorer   Code: A.833