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Artemisia pedatifida Shrubland Alliance | Western Ecology Working Group of...
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Name: Artemisia pedatifida Shrubland Alliance Reference: Western Ecology Working Group of... Description: This dwarf-shrub alliance is reported from the Pryor Mountains in the northern portion of the Bighorn Basin of south-central Montana and dissected uplands of the Cheyenne River Basin in northeastern Wyoming. Stands typically occur in slight depressions on alluvial fans and terraces, dissected outwash or rolling plains, lower foothills, and badlands. Sites are flat to moderately steep often highly eroded slopes with southern or western aspects. Soils are deep, poorly drained, and typically alkaline and saline with silt-loam to clay texture. The soil surface is mostly bare ground. Substrate is derived from shale or sandstone interbedded with shale, claystone or clay. The vegetation is characterized by a moderately dense dwarf-shrub layer that is dominated by Artemisia pedatifida. Atriplex gardneri may codominate in some stands. Other woody species may include scattered Artemisia tridentata, Atriplex confertifolia, Ericameria nauseosa (= Chrysothamnus nauseosus), Eriogonum pauciflorum, Krascheninnikovia lanata, Gutierrezia sarothrae, or Suaeda moquinii (= Suaeda nigra). The moderately sparse herbaceous layer is often dominated by cool-season graminoids such as Pascopyrum smithii or Elymus elymoides with lesser amounts of Bouteloua gracilis, Carex filifolia, Elymus lanceolatus ssp. lanceolatus, Poa secunda (= Poa juncifolia), or Pseudoroegneria spicata. Forbs are generally sparse and may include scattered Allium textile, Astragalus spp., Comandra umbellata, Machaeranthera tanacetifolia, Musineon divaricatum, Phlox hoodii, Platyschkuhria integrifolia, Vicia americana, Xylorhiza glabriuscula, or the cactus Opuntia polyacantha. Annual grasses and forbs are seasonally present. Diagnostic of this alliance is the dwarf-shrub layer dominated by Artemisia pedatifida.  Accession Code: VB.CC.19435.ARTEMISIAPEDATI 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: Artemisia pedatifida Shrubland Alliance   Translated: Birdfoot Sagebrush Shrubland Alliance   UID: HIGHER_CLASS_UNIT.2.125754 NatureServe Explorer   Code: A.1127