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• <br />• <br />3 <br />occurrina with mountain mahogany (Cercocarpus montanus) and snowberry <br />(Symohoricarpos oreophilus). Numerous annual and Perennial forbs and <br />grasses occurred as understory vegetation, includinq elegant cinquefoil <br />(Potentilla concinna), Carex soP.,mountain muhly (Muhlenberaia <br />montana), and prairie junegrass (Koeleria cristata). The soils occurring <br />in this type were a light brown sandy loam. Ponderosa pine, Gambel <br />oak, and especially Douglas fir were abundant in the sapling stage. <br />Understory was sparse under the older conifers where there was dense <br />litter. <br />The willow carr vegetation type was located in a drainaqe of <br />the Purgatoire River at an elevation of approximately 7400 ft. The <br />dominant shrubs were narrowleaf willow (Salix exi ua) and Woods rose <br />(Rosa woodsii). The entire willow carr had burned in the fall of 1980. <br />Rapid regrowth was seen, however. The willow (Salix exiqua) had <br />resprouted and was showing abundant regrowth. Species composition <br />had been altered in that forbs were more numerous and diverse than <br />before the burn. All litter cover had been burned. Understory species <br />included Kentucky bluegrass (Poa pratensis), sedge (Carex sop.), rushes <br />(Juncus sop.), smaller burdock (Arctium minus), giant ragweed (Ambrosia <br />trifida), Canada thistle (Cirsium arvense), common houndstonaue <br />(Cynoglossum officinale), butter -and -eggs (Linaria vuloaris), bluebells <br />(Mertensfa sop.), and goldenrod (Solidago altissima). <br />