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watershed), Claymore Lake near Fort Collins in Larimer County (Cache La
<br />Poudre watershed), and along the Green River from Browns Park through Lodore
<br />Canyon in Moffatt County (Upper Green-Flaming Gorge Reservoir watershed)
<br />(Colorado Natural Heritage Program FOR data, Ward and Naumann 1998).
<br />Extant Colorado populations occur within the Southern Rocky Mountains and
<br />Wyoming Basins (Figure 5), and one extirpated site is from the Central Shortgrass
<br />Prairie ecoregion.
<br />Idaho: Ute ladies'- tresses was first discovered in Idaho by Mabel Jones in 1996
<br />along the South Fork of the Snake River (Moseley 1997). The species is now
<br />known from Bonneville, Fremont, Jefferson, and Madison counties along the
<br />Snake River and from wetland sites along the Henry's Fork River (Mancuso
<br />2004, Moseley 1998a, 1998b, 1999a, Murphy 2001a). Idaho populations occur in
<br />the Idaho Falls, Palisades, and Lower Henrys watersheds within the Columbia
<br />Plateau and Utah-Wyoming Rocky Mountains ecoregions (Table 1, Figures 4, 5).
<br />Montana: No populations of Ute ladies'-tresses were known in Montana until
<br />1994 (Heidel 1996). From 1994-2000, populations were documented in
<br />Beaverhead, Broadwater, Gallatin, Jefferson, and Madison counties in the
<br />Beaverhead, Gallatin, Jefferson, Madison, Ruby, and Upper Missouri watersheds
<br />(Figure 4) (Heidel 1998, Montana Natural Heritage Program records). All known
<br />Montana sites occur within the Middle Rockies-Blue Mountains ecoregion
<br />• (Figure 5).
<br />Nebraska: Spiranthes diluvialis was discovered in Nebraska in 1996 (Hazlett
<br />1996). It is presently known only from the Niobrara River in Sioux County
<br />(Niobrara headwaters watershed) within the Northern Great Plains ecoregion
<br />(Hildebrand 1998) (Table 1, Figures 4, 5).
<br />Nevada: The only known occurrence of Ute ladies'-tresses in Nevada was
<br />discovered at "Panaca Spring" in 1936. This site, located within the Meadow
<br />Valley Wash watershed in Lincoln County, was not relocated during surveys in
<br />1989 (Coyner 1990) and 1992 (Morefield 1994), and the species was presumed
<br />extirpated in the state (US Fish and Wildlife Service 1992). In July 2005, Jim
<br />Coyner successfully relocated the Panaca population, demonstrating that S.
<br />diluvialis is still extant in Nevada (Figure 4)
<br />Utah: Before 1992, extant populations of Ute ladies'-tresses were found in
<br />Daggett, Duchesne, Garfield, Uintah, Utah, and Wayne counties and historical
<br />occurrences were known from Salt Lake, Tooele, and Weber counties (Coyner
<br />1990, Jennings 1989, US Fish and Wildlife Service 1992) (Figure 3, Table 1).
<br />These populations were dispersed across four TNC ecoregions (Colorado Plateau,
<br />Great Basin, Utah-Wyoming Rocky Mountains, and Wyoming Basins) (Figure 5)
<br />and 10 watersheds (Duchesne, Escalante, Fremont, Jordan, Lower Green, Lower
<br />Weber, Southern Great Salt Lake Desert, Spanish Fork, Upper Green-Flaming
<br />• Gorge Reservoir, and Utah Lake). Since 1992, one (continued on page 21)
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