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Artemisia longifolia - Calamovilfa longifolia Sparse Vegetation | NatureServe Biotics 2019
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Name: Artemisia longifolia - Calamovilfa longifolia Sparse Vegetation
Reference: NatureServe Biotics 2019
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 &lt;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: urn:lsid:vegbank.org:commConcept:30430-{5BC4AD37-9B2B-4442-9F30-3208FA9110D1}
Plot-observations of this Community Concept: 0
      Party Perspective according to: NatureServe (organization)
Perspective from: 09-Jul-1997 to: ongoing
      Names:   UID: ELEMENT_GLOBAL.2.683377 NatureServe ExplorerNatureServe Explorer logo
  Code: CEGL001521
  Translated: Longleaf Wormwood - Prairie Sandreed Sparse Vegetation
  Scientific: Artemisia longifolia - Calamovilfa longifolia Sparse Vegetation
(convergence) and Synonyms:
(similar) CEGL001521
(similar) Artemisia longifolia - Calamovilfa longifolia Sparse Vegetation
(similar) Artemisia longifolia - Calamovilfa longifolia Sparse Vegetation