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Artemisia longifolia - Calamovilfa longifolia Sparse Vegetation | Western Ecology Working Group of...
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Name: Artemisia longifolia - Calamovilfa longifolia Sparse Vegetation Reference: Western Ecology Working Group of... Description: This sparse plant community is a distinctive minor association occurring as small patches on steep, erosive and barren slopes or colluvium at slope bases in badlands topography of north-central Montana. It may occur in adjacent Canada if appropriate habitat exits. The climate is semi-arid (annual average precipitation 10-14 inches), temperate and verging on continental; two-thirds of the annual precipitation is received in spring and early summer. Parent material is soft, dark and erosive marine shale of the Colorado, Claggett and Bearpaw formations; these shales are quite fissile, weathering to predominantly sand-sized shards and excessively well-drained soils with a very acidic reaction (pH <5.0). The substrate's coarse texture and highly erosive nature precludes the development of soil horizons. Total canopy cover rarely exceeds 20%. <i>Rosa arkansana</i> is the only shrub with high constancy (mean canopy cover 1%); it occurs in a dwarfed form due to the stressful nature of these sites. The subshrubs <i>Eriogonum pauciflorum</i> and <i>Gutierrezia sarothrae</i> are also highly constant. Common and diagnostic grasses include <i>Calamovilfa longifolia</i> and <i>Calamagrostis montanensis</i>; their canopy cover is usually in the range of 1-5%. The most common and diagnostic forb is <i>Artemisia longifolia</i> (4-15% cover) with <i>Thermopsis rhombifolia, Eriogonum pauciflorum</i>, and <i>Stephanomeria runcinata</i> also consistently present.  Accession Code: VB.CC.34434.CEGL001521 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.2.683377 NatureServe Explorer   Translated: Longleaf Wormwood - Prairie Sandreed Sparse Vegetation   Scientific: Artemisia longifolia - Calamovilfa longifolia Sparse Vegetation   Code: CEGL001521