Coryphantha sneedii var. sneedii
Unknown, (2015). Lee's Puncushion Cactus (Coryphantha sneedii var. leei) and Sneed Pincushion Cactus (Coryphantha sneedii var. sneedii) 5-year Review Summary and Evaluation. Filed in Guadalupe RD, Lincoln NF, USFS.
Davis, J. 1994. Letter to Laird McIntosh (BLM Las Cruces District office) concerning monitoring of Bishops Cap, Coryphantha sneedii var sneedii plots. Includes also notes by Laird McIntosh about status of Webb Gap plots.
Van Devender, R., and R. Rondeau. 1992. The status of Sneed's pincushion cactus (Coryphantha sneedii var. sneedii) in Texas. Southwestern Field Biologists. Tuscon, Arizona. 20 p.
Devender, R. Rondeau, R. (1992) The Status of Sneed's Pincushion Cactus (Coryphantha sneedii var. sneedii) In Texas.
Gaines, K. H., and S. Boczkiewicz. 1995. Specimen tag information from the University of New Mexico Herbarium collection, Albuquerque.
Sivinski, R. 1991. Annual Section 6 performance report monitoring endangered plants (job 1). Unpublished report for U.S. Fish and Wildlife Service, Albuquerque, NM. 135 p + maps.
Turner, R. (1990). Area survey results for Corphantha[sic] sneedii var sneedii. Guadalupe RD, Lincoln NF, USFS. 1 p.
McIntosh, L. 1987. Location of monitoring plots, Coryphantha sneedii, Anthony Gap population, Bishops Cap population, Webb Gap population. Copies made from USGS 7.5 quad maps. BLM, Las Cruces District office.
Poole, J.M., and D.H. Riskind. 1987. Endangered, threatened, or protected native plants of Texas. Texas Parks Wildlife Dept., Austin, TX.