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• ft. This is just within the study area elevational range. Although not known from the eastern <br />portion of Moffat County that is most similar to the study area in western Routt County, the <br />possibility of its occurrence cannot be completely discounted. <br />Hairy Townsend daisy (Townsendia strigosa) is found in northwestern Moffat County in Colorado <br />(Weber and Wittmann (2001) also state that it is found in Montrose County), Utah and Wyoming <br />on clay hills. Little information exists regarding the habitat of this species but it is probably unlikely <br />to occur in the study area. Intermountain Flora (v. 5, p. 276) says specific boundaries in <br />Townsendia are difficult to delimit due to hybridization and polyploidy. Intermountain Flora (V. 5, <br />p. 280) says this is common in the Uinta Basin in "dry open places in the desert, variously on <br />shaly, sandy, or alkaline clay substrate." It is unlikely to be found in Montrose County, although it <br />is attributed to Montrose County in the Plants (USDA) database (accessed on- line). There is only <br />one specimen at the University of Colorado Herbarium (database accessed on- line), collected in <br />Moffat County, in the same area as A. jejunus, E. acau/e, and S. capitata, and thus probably <br />specific to the same geology. It is likely that this plant is a Uinta Basin / Green River Basin / Sand <br />Wash Basin endemic, probably occurring only on Tertiary Age Rocks (Green River Formation and <br />similar formations) and therefore unlikely to occur in the study area. <br />• Noxious Weeds <br />Of the plants present on the Routt County Noxious Weed list. Two were found in the study -- <br />yellow toadflax / butter and eggs (Linaria vulgaris) — found only in the Sagebrush Affected Area <br />and houndstongue (Cynog/ossum officinale) — found in all areas except the Sagebrush Reference <br />Area and the Improved Pasture Reference Area. Plants present in the study area and on the <br />Colorado State Noxious Weed A and B list (Colo. Dept. of Agric. 2009) include the following <br />species (plus those mentioned above for Routt County): <br />• Bull thistle (Cirsium vulgare) was found in the Sagebrush Affected Area <br />• Musk thistle (Carduus nutans ssp. macrolepis) was found in the Mountain brush and <br />Improved Pasture Affected areas <br />• Hoary cress (Cardaria draba) was found in the Sagebrush and Improved Pasture Affected <br />areas. It has been known to occur in the Seneca II Mined and Reclaimed Land though weed <br />control activities may have eliminated it there. <br />is 33 <br />