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Ephedra torreyana / Achnatherum hymenoides - Pleuraphis jamesii Shrubland | Western Ecology Working Group of...
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Name: Ephedra torreyana / Achnatherum hymenoides - Pleuraphis jamesii Shrubland Reference: Western Ecology Working Group of... Description: This shrubland association occurs in large patches on broad sandy plains, as well as in smaller patches on knolls, toeslopes and pediments. Sites are flat to gentle (up to 8-degree slopes), occur between 1220 and 2000 m elevation, and tend to be oriented to warm south or west aspects. The unvegetated surface has up to 90% exposure of sand or bare soil. Parent materials include Entrada, Navajo, Summerville and Carmel formation materials that have eroded to alluvial or eolian sands and clays. Soils are rapidly drained to well-drained loamy sands where derived from secondary materials or sandy clays where derived from underlying shales. Total vegetation cover ranges from 5 to 25% in this variable community, which includes stands that are shrub-herbaceous in structure as well as shrublands and sparse vegetation. Vegetation composition is characterized by an open canopy of <i>Ephedra torreyana</i> that ranges between 2 to 25% cover, with an understory codominated by <i>Achnatherum hymenoides</i> and <i>Pleuraphis jamesii</i> with between 2 and 15% cover. Associated shrubs include <i>Atriplex canescens, Opuntia polyacantha</i>, and <i>Gutierrezia sarothrae</i>. <i>Coleogyne ramosissima</i> is absent or has 1% or less cover. The remaining herbaceous layer often includes <i>Astragalus amphioxys, Malacothrix sonchoides, Sporobolus airoides, Sporobolus flexuosus</i>, and <i>Sphaeralcea parvifolia</i>.  Accession Code: VB.CC.32023.CEGL002352 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.2.769074 NatureServe Explorer   Translated: Torrey's Joint-fir / Indian Ricegrass - James' Galleta Shrubland   Scientific: Ephedra torreyana / Achnatherum hymenoides - Pleuraphis jamesii Shrubland   Code: CEGL002352