1997-06-13_REPORT - M1981302 (11)

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Creek; and in 1896 at Camp Harding in southwest suburban Colorado Springs, El Paso County (Jennings 1989, 1990) . Two populations discovered in 1994 expand the known range of the Ute ladies'- tresses considerably to the north. One population was found along Antelope Creek, a tributary to the Cheyenne River, in northwest Converse County, Wyoming (E. Nelson, Rocky Mountain Herbarium, in litt. 1994) . One population was discovered in an old meander scar of the Jefferson River in Jefferson County, Montana (B. Heidel , Montana Natural Heritage Program, in litt. 1994) . Both of these discoveries are in the Missouri River drainage. The central populations of the orchid are in wet or mesic riparian meadows or in understory wetland meadows of riparian woodlands in the Colorado River drainage of eastern Utah. Several populations occur along the Green River below Flaming Gorge dam: two on Federal lands administered by the Bureau of Land Management and one on private land in Browns Park in Daggett County; one in Island Park; and one south of the Spl 't Mountain Gorge, the latter two within Dinosaur National Monument. Addit;onal populations occur within Dinosaur National Monument on small tributaries to the Green River: one in Hog Canyon, one in adjacent Cub Creek and one in Orchid Draw. S. diluvialis populations occur on all the major drainages to the Green River along the south slope of the Uinta Mountains in the northern portion of the Uinta Basin. A small population occurs along Brush Creek on Bureau of Land Management lands. Two populations occur in the Ashley Creek drainage: a small population on private land adjacent to Ashley Creek, and a large population in wetlands recently developed in an abandoned gravel pit an Federal lands administered by the Bureau of Reclamation. A large population occurs along the Uinta River and its tributary, the Whiterocks River, primarily on Ute tribal lands. Populations occur along the Lake Fork River above its confluence with the Yellowstone River, mostly on private lands. A large population occurs along the Duchesne River from the vicinity of its confluence with the Strawberry River upstream to the lower portion of Rock Creek, mostly on private lands. A small population occurs on private lands along Currant Creek, a tributary of the Strawberry River. Outside of the Uinta Basin, two small outlier populations exist in the Colorado River Basin in south-central Utah. One small population occurs along the Fremont River in Capitol Reef National Park, Wayne County and the second larger population on Bureau of Land Management administered lands along Deer Creek, near Boulder, Garfield County. All Colorado River Basin populations have been discovered since 1977 (Coyner 1989, 1990; Heil 1988; Jennings 1989; U.S. Fish & Wildlife Service 199I; Franklin 1993) . The western-most populations of S. diluvialis occur in riparian, spring, and lakeside wet or mesic meadows along the Wasatch Front and in the eastern Great Basin of western Utah and adjacent Nevada. Two are in wetlands on private land adjacent to Utah Lake in Utah County, Utah. In 1992, several orchid populations were discovered on the Uinta National Forest in the Spanish Fork River drainage, primarily along the Diamond Fork tributary. Smaller stands 4