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Pinus balfouriana Woodland Alliance | NatureServe Biotics 2019
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Name: Pinus balfouriana Woodland Alliance Reference: NatureServe Biotics 2019 Description: This montane and subalpine woodland alliance is dominated by <i>Pinus balfouriana</i> (<i>Pinus balfouriana ssp. balfouriana</i> or <i>Pinus balfouriana ssp. austrina</i>). Other trees present may include <i>Abies magnifica var. shastensis, Pinus albicaulis, Pinus contorta var. murrayana, Pinus flexilis, Pinus monticola</i>, and <i>Tsuga mertensiana</i>. The shrub and herbaceous layers are usually sparse. The shrubs <i>Anemone drummondii</i> or <i>Chrysolepis sempervirens</i> are often associated with stands. This alliance occurs in the montane northern Coast Ranges, the subalpine Klamath Mountains, and the southern subalpine Sierra Nevada in California at elevations from 2100-3500 m. Stands are usually best developed on dry, rocky sites and most extensive on upper slopes, crests, ridges, summits, upper slopes to forest line. Soils are loose, well drained, and often rocky, including glacial till. It occurs on a variety of substrates. Northern stands, composed of <i>Pinus balfouriana ssp. balfouriana</i>, grow on Franciscan greywacke sandstone, metavolcanics, and schist-derived soils. Southern stands of <i>Pinus balfouriana ssp. austrina</i> grow on ultramafic soils. In the Sierra Nevada, <i>Pinus balfouriana</i> stands occur on granitic soils. Precipitation is highly seasonal, with the bulk falling as snow from November to April. Late summer is droughty after the snow has melted. At the higher elevations, trees will be smaller in stature and contorted, but they rarely form krummholz.  Accession Code: urn:lsid:vegbank.org:commConcept:38069-{F92346DC-F4C6-4FE0-BD32-30EC3CC6D167} Plot-observations of this Community Concept: 0
	Party Perspective according to: NatureServe (organization) Perspective from: 18-Dec-2014 to: ongoing
	status: accepted Community's Parent: Pinus contorta var. murrayana Woodland Group This Community's Level: Alliance This Community's Children: Show/Hide   Pinus balfouriana Woodland [Placeholder]		Names:   UID: ELEMENT_GLOBAL.2.898998 NatureServe Explorer   Code: A0509   Translated: Foxtail Pine Woodland Alliance   Common: Foxtail Pine Woodland   Scientific: Pinus balfouriana Woodland Alliance