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Ephedra nevadensis - Lycium andersonii - Grayia spinosa Scrub Alliance | NatureServe Biotics 2019
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Name: Ephedra nevadensis - Lycium andersonii - Grayia spinosa Scrub Alliance
Reference: NatureServe Biotics 2019
Description: This semi-arid shrubland alliance occurs in valleys, bajadas, and mountains of the Mojave Desert, Great Basin, Colorado Plateau, Sonoran Desert and possibly Chihuahuan Desert. Vegetation in this shrubland alliance is characterized by a sparse to moderate cover of mixed xeromorphic short shrubs and sparse herbaceous cover. The shrub layer is dominated by <i>Ephedra nevadensis, Lycium andersonii</i>, and/or <i>Lycium cooperi</i> with <i>Ericameria cooperi, Eriogonum fasciculatum, Grayia spinosa</i>, and/or <i>Yucca baccata</i> present to codominant. Other characteristic shrubs which may be present to codominant are <i>Acamptopappus sphaerocephalus, Chrysothamnus viscidiflorus, Ephedra torreyana</i>, and <i>Ephedra viridis</i>. These shrublands may include 35 species of shrubs. If present, the understory may include a sparse to moderately dense herbaceous layer composed mostly of dry perennial grasses and scattered forbs. Stands are found in valleys, bajadas, and mountains. Elevation ranges from 500-1800 m. Sites are commonly found on all aspects in broad valleys, alluvial fans, moderate to steep rocky slopes, and in rocky intermittently flooded drainages. Soil textures range from loamy sands to loams with rock fragments and are derived from alluvial deposits from granitic and sedimentary rocks. In the Mojave Desert this alliance occurs above <i>Larrea / Ambrosia</i> shrublands and is often surrounded by <i>Artemisia tridentata</i>-dominated shrublands. 
Accession Code: urn:lsid:vegbank.org:commConcept:39430-{0A3BAA9A-5A82-4B8B-93D3-0F95078E167B}
Plot-observations of this Community Concept: 0
      Party Perspective according to: NatureServe (organization)
Perspective from: 11-Nov-2016 to: ongoing
      Names:   UID: ELEMENT_GLOBAL.2.971941 NatureServe ExplorerNatureServe Explorer logo
  Code: A4245
  Translated: Nevada Joint-fir - Water Jacket - Spiny Hopsage Scrub Alliance
  Common: Nevada Joint-fir - Desert-thorn - Spiny Hopsage Scrub
  Scientific: Ephedra nevadensis - Lycium andersonii - Grayia spinosa Scrub Alliance