Name:
Hordeum brachyantherum Herbaceous Vegetation
Reference:
Western Ecology Working Group of...
Description:
This association is found at 348-2684 m (1140-8800 feet) elevation in widely scattered mountain, basin, foothill, and valley locations ranging from the Central Coast Ranges of California, Central Valley, northwestern California, to the northern half of the Great Basin in Nevada through the southern one-third of Idaho and into southwestern Wyoming. The association is found along both intermittent and perennial streams but most commonly occurs in ephemerally moist to semipermanently saturated, often spring-fed, meadows and swales. It occurs in low- to moderate-gradient valley bottoms that range from very narrow to very wide with clayey, silty, or fine loamy soil. It is a small-patch community, generally occupying 0.1 to 1 acres. <i>Hordeum brachyantherum</i> typically forms a continuous layer with cover ranging from 25% to nearly 100%. Cover of graminoid associates varies and may include <i>Carex athrostachya, Carex microptera, Danthonia californica, Deschampsia caespitosa, Eleocharis palustris, Elymus trachycaulus, Poa secunda (= Poa nevadensis)</i>, which is occasionally codominant, and/or <i>Poa pratensis</i>. Forb cover is sparse and is characterized by <i>Camassia quamash, Epilobium</i> spp., <i>Mimulus guttatus, Iris missouriensis, Rumex crispus, Symphyotrichum</i> spp., and various vernal annuals. At Pinnacles National Monument, stands can have many introduced herbaceous species (sometimes more that 30% relative cover) and typically occur in seasonal wetland meadows and adjacent to streams, with clay or silt loam soils that include serpentine or other poor-nutrient soils.
Accession Code:
VB.CC.33603.CEGL003430
Plot-observations of this Community Concept:
0
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