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Yucca brevifolia / Larrea tridentata - Yucca schidigera / Pleuraphis rigida Wooded Shrubland | NatureServe Biotics 2019
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Name: Yucca brevifolia / Larrea tridentata - Yucca schidigera / Pleuraphis rigida Wooded Shrubland Reference: NatureServe Biotics 2019 Description: This upland scrub association occurs at mid to upper elevations in the Mojave Desert in California and in northwestern Arizona. <i>Yucca brevifolia</i> is the characteristic tall shrub/small tree species in the sparse to open scrub canopy with 1-5% cover. An open to moderately dense shrub layer is present, ranging from 8 to 28% cover, and characterized by the dominance or codominance of <i>Larrea tridentata</i> and/or <i>Yucca schidigera</i> in varying mixtures. A variety of other shrubs may be present, including <i>Acamptopappus sphaerocephalus, Ambrosia dumosa, Cylindropuntia acanthocarpa, Ephedra nevadensis, Echinocereus engelmannii, Krameria</i> spp., and <i>Salazaria mexicana</i>. If present, the herbaceous layer is sparse to moderately dense (to 25% cover) and composed of scattered perennial grasses and forbs such as <i>Muhlenbergia porteri, Pleuraphis jamesii, Pleuraphis rigida</i>, and <i>Sphaeralcea ambigua</i> with native annual <i>Eriogonum inflatum</i> and often with exotic annual species <i>Bromus rubens</i> and <i>Erodium cicutarium</i> frequently present. Stands occur along upper bajadas, undulating toeslopes, and bottoms of mountain slopes, ranging from 840 to 1440 m elevation. Sites are gentle to moderately steep slopes which often have southern to westerly aspects. Soils are variable, ranging from coarse sand to moderately fine sandy clay loam derived mostly from alluvium, but also several other substrates.  Accession Code: urn:lsid:vegbank.org:commConcept:34450-{4F2703C5-067B-4B56-8378-947F53C24A2A} Plot-observations of this Community Concept: 0
	Party Perspective according to: NatureServe (organization) Perspective from: 21-Nov-2016 to: ongoing
	status: accepted Community's Parent: Yucca brevifolia Wooded Scrub Alliance This Community's Level: Association This Community's Children: [none]		Names:   UID: ELEMENT_GLOBAL.2.971773 NatureServe Explorer   Code: CEGL005777   Translated: Joshua Tree / Creosotebush - Mojave Yucca / Big Galleta Wooded Shrubland   Scientific: Yucca brevifolia / Larrea tridentata - Yucca schidigera / Pleuraphis rigida Wooded Shrubland