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Russian thistle is not listed as a noxious weed. Therefore, noxious weeds are not currently a <br />concern at this site. <br />Table 3. Costilla County Noxious Weed List <br />Common Name <br />Scientific Name <br />Colorado State List <br />Bull thistle <br />Cirsium vulgare <br />B <br />Canada thistle <br />Cirsium arvense <br />B <br />Hoary cress <br />Cardaria draba <br />B <br />Houndston ue <br />C no lossum officinale <br />B <br />Leafy spurge <br />Euphorbia esula <br />B <br />Musk thistle <br />Carduus nutans <br />B <br />Russian kna weed <br />Acro tilon repens <br />B <br />Yellow toadflax <br />Linaria vul ans <br />B <br />Field bindweed <br />Convolvulus arvensis <br />C <br />6.0 CONCLUSIONS <br />Vegetation cover and diversity at the Mesita Hill mine site is continuing to improve. Cover is <br />patchy across the site, as is typical for reclamation areas in this and region of the state. The <br />native vegetation is established and is continuing to self- regenerate and expand its cover. Nox- <br />ious weed cover is not present at this time. <br />5 <br />