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Amaranthus palmeri Herbaceous Vegetation | Western Ecology Working Group of...
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Name: Amaranthus palmeri Herbaceous Vegetation Reference: Western Ecology Working Group of... Description: This vegetation type occurs on the valley floor at Buenos Aires National Wildlife Refuge, Arizona, and elsewhere in the desert southwestern U.S. and Sonora where disturbance by cultivation, forage production (conversion to sorghum) or heavy grazing by livestock has reduced natural perennial cover in what was likely desert grasslands. Sites are typically flat to gently sloping basins and plains that may be intermittently flooded. Soils are variable but typically finer textured silt loam or clays. The vegetation is characterized by a sparse to dense herbaceous layer dominated by the native annual forb <i>Amaranthus palmeri</i>; it lacks significant (&lt;10% cover) perennial vegetation to be classified as a perennial type. Associated species are sometimes numerous and include scattered shrubs, grasses and forbs such as <i>Chenopodium berlandieri, Chloris virgata, Eragrostis cilianensis, Eragrostis pectinacea, Eriochloa acuminata, Ipomoea</i> spp., <i>Kallstroemia grandiflora, Leptochloa panicea ssp. brachiata (= Leptochloa filiformis), Prosopis velutina</i>, and <i>Solanum elaeagnifolium</i>.  Accession Code: VB.CC.31863.CEGL005327 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.2.806260 NatureServe Explorer   Translated: Carelessweed Herbaceous Vegetation   Code: CEGL005327   Scientific: Amaranthus palmeri Herbaceous Vegetation