Name:
Bouteloua aristidoides - (Chloris virgata, Eriochloa lemmonii) Annual Herbaceous Vegetation
Reference:
Western Ecology Working Group of...
Description:
This desert annual grassland association occurs on mesas, alluvial fans, valley floors, washes and disturbed areas. Sites are flat to gently sloping. Substrate is variable but is reported from well-drained sandy soil. The open to dense herbaceous layer is strongly dominated by annual grasses with low cover (<10%) of perennial grasses. <i>Bouteloua aristidoides, Eriochloa lemmonii</i>, and/or <i>Chloris virgata</i> dominate the herbaceous layer. Cover of vegetation is variable depending on amount and season of annual precipitation, but it is moderately dense to dense most years. Scattered shrubs <i>Prosopis velutina, Baccharis sarothroides</i>, and <i>Gutierrezia</i> ssp. may be present in low cover. Other associates are mostly annuals and small patches of perennial vegetation such as <i>Bouteloua curtipendula, Bouteloua eriopoda, Bouteloua rothrockii, Boerhavia coccinea, Eragrostis intermedia</i>, and <i>Tetraclea coulteri</i>. Common annual species include <i>Amaranthus palmeri, Aristida adscensionis, Bouteloua barbata, Urochloa arizonica (= Brachiaria arizonica), Chamaecrista nictitans, Chamaesyce hyssopifolia, Kallstroemia grandiflora, Mollugo verticillata, Physalis crassifolia, Polygala barbeyana, Portulaca umbraticola, Sida abutifolia</i>, and <i>Tidestromia lanuginosa</i>. Exotic grasses <i>Eragrostis curvula, Eragrostis lehmanniana</i>, and <i>Eragrostis cilianensis</i> are present in some stands.
Accession Code:
VB.CC.31725.CEGL005329
Plot-observations of this Community Concept:
0
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