rare plants
Smithsonian Institution. 1980. Draft abstracts on rare plants. Unpublished. Perhaps 100 individual abstracts.
Tonne, P. 2005. Results of rare plant surveys on Carlsbad Caverns National Park Rattlesnake Canyon Trail. Natural Heritage New Mexico Publication No. 05-GTR-295. 50 p.
Tonne, P. 2002. Results of rare plant surveys on Carlsbad Caverns National Park. 23p. + appendices.
Spellenberg, R. 1979. A report on the survey for threatened, endangered, or rare plant species on the Grants Malpais, Valencia County, New Mexico, with general comments on the vegetation. New Mexico State University. 33 p.
Sivinski, R. 2010. Email with Map to Rayo McCollough on Status of Pecos Sunflower (Helianthus paradoxus) Seeding/Reintroduction on the Rhodes property north of San Antonio. 1 p.
Tonne, P. 2000. Rare Plant Mapping for USFWS.
Sivinski, R., and K. Lightfoot. 1995. Inventory of the rare and endangered plants of New Mexico. 3rd edition. New Mexico Forestry and Resources Conservation Division, Energy, Minerals and Natural Resources Dept., Santa Fe, NM. 47p.
New Mexico Native Plant Protection Advisory Committee. 1984. A handbook of rare and endemic plants of New Mexico. Univ. New Mexico Press, Albuquerque. 291 pp.
Spackman, S., B. Jennings, J. Coles, C. Dawson, M. Minton, A. Kratz, C. Spurrier, and T. Skadelandl. 1996. Colorado rare plant field guide. Prepared for the Bureau of Land Management, the U.S. Forest Service, and the U.S. Fish and Wildlife Service by the
Fertig, W., C. Refsdal, and J. Whipple. 1994. Wyoming rare plant field guide. Wyoming Rare Plant Technical Committee, Cheyenne. No pagination.