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modest cover were silver sagebrush (Artemisia cana), and mountain snowberry (Symphoricarpos <br />rotundifolius). <br />Introduced perennial forbs, mostly Cicer milkvetch (Astragalus cicer) and alfalfa (Medicago <br />sativa) totaled 1.3 percent all hit cover. Introduced annual and biennial forbs and native perennial <br />forbs contributed 1.3 and 0.4 percent all -hit cover, respectively. Of native perennial forbs, western <br />yarrow (Achillea millefolium) and western aster (Symphyothrichum ascendens) were the most <br />abundant. Introduced perennial forb cover total was composed mostly of alfalfa (Medicago <br />sativa). Also observed in the area were the noxious weeds hound's tongue (Cynoglossum <br />officinale), white -top (Cardaria draba), and Canada thistle (Cirsium arvensis). <br />Total average vegetation cover for all hits was 47.1 percent. For allowable all -hit herbaceous <br />vegetation, the total was 42.4 percent (Table 5-1). Cover by standing dead, litter, bare soil and <br />rock averaged 1.2, 16.9, 31.2 and 4.5 percent, respectively. Average species density was 22.9 <br />species per 100 sq. m. <br />Sagebrush/Snowberry Reference Area <br />(Photographs 3 through 12) <br />COVER <br />(Table 2) <br />Native shrubs and native perennial cool season grasses were co -dominant lifeforms observed in <br />the Sagebrush/Snowberry Reference Area, contributing 26.6 percent and 26.9 percent, <br />respectively, toward total all -hit vegetation cover. Of the shrub cover, mountain snowberry <br />(Symphoricarpos rotundifolius) and big sagebrush (Artemisia tridentata) contributed by far the <br />bulk. Of native perennial cool season grasses Rocky Mountain fescue (Festuca saximontana) <br />was by far the most abundant with modest contributions by oniongrass (Bromelica bulbosa), <br />Montana wheatgrass (Elymus lanceolatus ssp. albicans), and slender wheatgrass (Elymus <br />trachycaulus). All -hit cover by native perennial forbs was also rather extensive, totaling 19.5 <br />percent, most of which was comprised of western yarrow, weedy milkvetch (Astragalus miser), <br />arrowleaf balsamroot (Balsamorhiza sagittata), one -flower helianthella (Helianthella uniflora), <br />common yampa and western aster. Smooth brome (Bromopsis inermis), an introduced perennial <br />cool season grass comprised 1.3 percent all -hit cover. <br />Total average vegetation cover for all hits was 75.4 percent. For allowable all -hit herbaceous <br />vegetation cover, the average was 48.7 percent. Cover by standing dead, litter, bare soil and <br />8 <br />