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<br />6.0 REFERENCES CITED <br />Colorado Natural Heritage Inventory. 1982. Candidate plant specles of <br />special concern. Colorado Department of Natural Resources, Natural <br />Areas Program, Denver. <br />U. S. Bureau of Land Management. 1981. Threatened, endangered, and sensi- <br />tive plant species policy and list for Colorado. BLM Instruction <br />Memorandum No. CO 81-291. <br />U.S. Fish and Wildlife Service. 1980. Review of plant taxa for listing <br />as endangered or threatened species. Federal Register 451242): <br />82480-82569. <br />U.S. Forest Service and U.S. Fish and Wildlife Service. 1979. Proposed <br />and recommended endangered and threatened plant species of the Forest <br />Service Rocky Mountain REgion. Joint publication by USFS, P. 0. Box <br />25127, Lakewood, CO 80225, and USFWS, P. 0. Box 25486, Lakewood, <br />CO 80225. <br />Weber, W. A. and B. C. Jhnston. 1979. Natural history inventory of <br />Colorado. I. vascular plants, lichens, and bryophytes. University <br />of Colorado Museum, Boulder. <br />-9- <br />