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• Sitanion hystrix <br />puntta ar orescens <br />. po yacant a <br />utterrezta sarothrae <br />gropyron smt tt <br />Artemtst~rtgtaa <br />poro o us cryptandrus <br />ucca g auca <br />urotl~ to Tanata <br />rtstt a spp. <br />SHRUBLAND VEGETATION: <br />Bottle Brush Squirreltail <br />Cholla Cactus <br />Prickly Pear Cactus <br />Snakeweed <br />Western Wheatgrass <br />Fringed Sage <br />Sand Dropseed <br />Yucca <br />Winterfat <br />Three-awn <br />On the highly variable Schamber-Razor Complex can be <br />found a wide variety of shrubs including Mountain Mahogany, <br />Buckwheat, Four-wing Saltbush, and Skunkbush Sumac. The <br />understory is qualitatively similar to the <br />Bouteloua-Muhlenbergia Community, but can differ markedly in <br />a quantttattve sense. The shrub areas can generally be <br />divided into two types. One is an upland form and the other <br />occupies the more bottomland or at least more moist areas in <br />the bottoms of water channels. No trees are found on the <br />site. <br />BOUTELOUS CERCOCARPUS COMMUNITY: Growing on the more coarse <br />• an rter portions o t e c amber-Razor Complex can be <br />found a misture of species including Mountain Mahogany and <br />Four-wing Saltbush forming an open canopied upperstory which <br />has an understory primarily of Blue Grama, Little Bluestem, <br />and Side-oats Grama. This can be referred to as the <br />Boutelous-Cercocarpus Community. <br />Cover in this community totals about 30 to 70 percent. <br />The densest areas are occupied by shrubs while the most <br />sparse areas are primarily the open grass areas that usually <br />connect to the Bouteloua-Muhlenbergia Community. <br />RHUS TRILOBATA COMMUNITY: In the more sheltered areas where <br />moisture is more a un ant Skunkbush Sumac (Rhus trilobatal <br />dominates very intensely. The understory is air y ense as <br />is the canopy. Therefore, in most areas the vegetation has <br />a total cover of greater than 100%. The community occurs on <br />the Schamber-Razor Complex but seems to be more <br />characteristic of the Razor clays. In broad outwash areas <br />at the base of the erosion channels the Mountain Mahogony, <br />Skunkbush Sumac, Four-Wing Saltbush, and Buckwheat can be <br />found growing more or less in association with each other. <br />Probably this strange combination of generally incompatible <br />species is a result of an intense variation and complexity <br />in the soils in this outwash area. <br />• <br />- 36 - <br />