2020-08-10_PERMIT FILE - C1981018A (2)

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ERO Resources these sites is reported to be less than on finer textured sites. Colorado • wildrye has been found to be characteristic of trampling and of shallow soils. This species will maintain itself well under both of these conditions. Colorado wildrye furnishes adequate forage only during the spring. Another spring forage producer is cheatgrass. This species is palatable and used only during the early spring. In addition, cheatgrass has been found to exhibit characteristics that allow it near complete utilization of surface soil moisture and continuous seed production. Cheatgrass is favored on sandy soils. This species is not tolerant of heavy grazing pressures. Indian ricegrass is characteristic of sandy soil areas and is a known sand binder. This species is also valuable as forage. Blue gramagrass is characteristic of loamy soils and an excellent source of forage. Annual grasses and forbs contribute substantial numbers to all the vegetation types occurring. This life form occurs in annual forb-dominated stands in areas of high, perennial disturbance. The major annual forb species include African mustard (Malcomia africana), stickseed • (la�la occidentalis) and peppergrass (LeTidium densiflorum and 1, oerfoliatum), • Several species considered to be restricted to the Uintah Basin and included as threatened and endangered species were found by Welsh in his survey of the permit area (Welsh and Neese 1979). Species identified by this survey include Duchesne milkvstch,•(Astr�yajus duchesne), ephedra buckwheatF(Fri000num epbgdrides), Uintah her idi m (Mirabilis alipes), Jones parthenium (Parthenium limlatum) and Graham beardtongue (psrrstemon arahamii). Based on an earlier review (Welsh 1978 and Welsh and Thorne 1979), the authors recommend in these reports that these species be treated as follows: o Duchesne milkvetch maintain threatened status o ephedra buckwheat be down -graded to threatened status II.F-18