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Picea engelmannii / Physocarpus malvaceus Forest | Western Ecology Working Group of...
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Name: Picea engelmannii / Physocarpus malvaceus Forest Reference: Western Ecology Working Group of... Description: This forest association occurs in mountainous areas within a rather restricted area on calcareous soils on the northern flank of the Absaroka range in south-central Montana, and from the Clark's Fork of the Yellowstone River in northwestern Wyoming. The type is found on cool moist aspects with gentle to steep slopes between 1800-2200 m (5900-7200 feet) elevation. Picea engelmannii, as well as the Picea engelmannii X glauca hybrid, are the diagnostic species and can occur as the forest overstory in mature late seral stands, or in the understory in younger age classes. The predominantly calcareous substrates favor Pseudotsuga menziesii as the leading seral dominant; Pinus contorta and occasionally Abies lasiocarpa occur scattered at higher elevations. The shrub undergrowth is primarily Physocarpus malvaceus, a deciduous species of moderate height. Other common associated shrubs include Symphoricarpos albus and Spiraea betulifolia. Actaea rubra and Galium triflorum are usually present. The dominance of Picea engelmannii in the over story, evidence of Picea reproduction in the understory, and the presence of Physocarpus malvaceus distinguish this plant association from other associations which could occur in similar habitats.  Accession Code: VB.CC.25310.PICEAENGELMANNI Plot-observations of this Community Concept: 0
	Party Perspective according to: NatureServe (organization) Perspective from: 18-Jan-2000 to: 17-Nov-2014
	status: accepted Community's Parent: Picea engelmannii Forest Alliance This Community's Level: Association This Community's Children: [none]		Names:   Translated: Engelmann Spruce / Mallow-leaf Ninebark Forest   UID: ELEMENT_GLOBAL.2.687572 NatureServe Explorer   Code: CEGL002676   Scientific: Picea engelmannii / Physocarpus malvaceus Forest (convergence) and Synonyms: (undetermined) Picea engelmannii / Physocarpus malvaceus Forest