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• 4.0 RARE AND ENDANGERED PLANT SPECIES INVENTORY <br />r ~ <br />U <br /> <br />According to the Colorado Natural Heritage Program, no speces of concern have been found in the <br />immediate project area, although eight sensitive plant speces are known from within a 30-mile radius. <br />Because of this proximity, the worst case assumption was made that there existed some potential for one <br />or more taxa to be located in the vegetation study area. This potential was further clarified following a <br />review of habitat requisites for the eight subject taxa resulting in a reduction of the list to a single species, <br />the Arizona centaury, that exhibited habitat requirements provided within the vegetation study area. The <br />following is a list of those eight species, their habitat requirements, and their federal and state status. <br />Sensitive Plants Potentially Occurring in the Vicinity of the Study Area <br />Common Name <br />H <br />i Status <br /> tat <br />ab <br />Scientific Name Federal State <br />Abode beardstongue Mancos Shale -barren, moist soils - <br />Penstemon retrorsus in drainages or north-facing slopes Rare or <br /> saltbrush/sagebrush community - none Threatened <br /> 5,000' to 6,500' elevation <br />Arizona centaury Associated with wetland /riparian <br />Centaurium arizonicum habitats Critically <br /> none Imperiled <br />Colorado desert-parsley Mancos Formation -Abode Hills - <br />Lomatium croncinnum associated with sagebrush, none Imperiled <br /> shadscale, greasewood and shrub <br /> oak - 5,500' to 7,000' elevation <br />Eastwood evening-primrose Abode Hills in lower valleys <br />Camissonia eastwoodiae Critically <br /> none Imperiled <br />Grand Mesa penstemon Mountain slopes on Grand Mesa <br />Penstemon mensarum Rare or <br /> none Threatened <br />Helleborine Seeps in sandstone cliffs and <br />Epipactis gigantea hillsides -hot springs - 4,800' to <br />' Sensitive Imperiled <br /> elevation <br />6,000 <br />Thistle Adobe hills <br />Cirsium perplexans <br />none <br />Imperiled <br />Uinta Basin hookless cactus Rocky hills -mesa slopes -alluvial <br />Sclerocactus glaucus benches -desert shrub <br />Threatened Rare or <br /> communities - 4,500' to 6,000' Threatened <br /> elevation <br />~6®vm ~1Bffi AH6~~uA47t8, tic. Page 26 Exhibit 5 -Bonne Baseline Vegetation Survey <br />