GREEN-FLOWER NIPPLE-CACTUS
Sivinski, R. 1991. NM rare plant occurrence record data sheet of 8 July 1991 for Mammillaria viridiflora EMNRD, Santa Fe, NM.
Fletcher, R. Unpublished notes on Mammillaria orestera from USDA-FS files, Albuquerque, NM. 1 pp.
Zimmerman, A.D. 1976. Threatened and endangered species habitat study area notes. Unpublished notes on Mammillaria orestera (M. viridiflora) for USDA - Forest Service 21 Aug 1976. 2 pp. and map.
New Mexico Natural Heritage Program, unpublished manual database plant records from NMNHP 1976 - 87. Forestry & Resources Conservation Div. of Energy, Minerals & Natural Resources Department
Zimmerman, A. 1976. Threatened and endangered species habitat study area notes. Unpublished notes on Mammillaria orestera (M. viridiflora) for USDA - Forest Service 22 May 1976. 1 p. and map.
S64PIESBNMUS, Legacy reference. Physical copy not yet located.
Knight, P. Marron and Associates Inc., 7511 Fourth Street, Albuquerque, NM 87107-6629 (505) 898-8848