BRACK'S HARDWALL CACTUS
Creeden, E. 2015. Brack's cactus locations found during clearance surveys for Encana Oil & Gas proposed Blanco Wash I15-2409 oil and gas project . SWCA Environmental Consultants.
Prall, D. 2014. Navajo Natural Heritage Program locations for Aztec gilia and Brack's hardwall cactus.
Phipps, L. 2014. Geodatabase of Brack's cactus locations. Ecosphere Environmental Services.
Creeden, E. 2015. Brack's cactus locations for Encana Oil & Gas proposed Escrito D20-2409 and M21-2409 projects. SWCA Environmental Consultants.
Creeden, E. 2015. Brack's cactus locations found during clearance surveys for Encana Oil & Gas. SWCA Environmental Consultants.
East, M. 2015. Database of surveys for Brack's cactus (Sclerocactus cloveriae ssp. brackii) in northwestern New Mexico. Natural Heritage New Mexico.
Ballman, A. 2014. Brack's cactus surveys and transplant sites. Nelson Consulting, Inc.
Muldavin, E, R. Sivinski, M. East, Y. Chauvin, and M. Horner. 2016. Brack’s Hardwall Cactus Distribution, Habitat, and Status Survey 2015. Natural Heritage New Mexico Report 393. Natural Heritage New Mexico, University of New Mexico, Albuquerque, NM. 61