BRACK'S HARDWALL CACTUS
Nelson Consulting, Inc. 2013. Biological survey report: Encana Oil & Gas (USA) Inc. Escrito E13-2407 No. 01H natural gas and oil well. 27 p.
Nelson Consulting, Inc. 2014. Biological survey report for Encana Oil & Gas (USA) Inc.'s proposed Escrito L17-2409 Nos. 01H & 02H and Escrito L18-2409 Nos. 01H & 02H oil and natural gas well projects. Submitted to BLM Farmington Field Office. 63 p.
Murray, Sheila. 2011. New Mexico rare plant locations from the Arboretum at Flagstaff.The Arboretum at Flagstaff, 4001 S. Woody Mountain Rd., Flagstaff, AZ 86001. On File at: Natural Heritage New Mexico, University of New Mexcio, Albuqueque, NM.
Adkins Consulting, Inc. 2013. Biological survey report for the proposed Martin Gas Com F #1H natural gas well and well-tie pipeline, XTO Energy, Inc. Submitted to BLM Farmington Field Office. 20 p.
Adkins Consulting, Inc. 2013. Biological survey report for the proposed Caballo 30-15-29 #1H oil and gas well project, SG Interests I, Ltd. Submitted to BLM Farmington Field Office. 20 p.
Zabka, Matt. 2011. Biological Survey Report For the Proposed Pioneer Lateral No.1 Pigging System Upgrades Adkins Consulting Inc. Environmental Permitting Services, Farmington-Durango
SME Environmental Consultants. 2011. Biological survey report for Burlington Resources Oil & Gas Company, LP proposed Kessler Com 3P natural gas well and pipeline project. Submitted to BLM Farmington Field Office. 21 p.
SME Environmental Consultants. 2011. Biological survey report for Burlington Resources Oil & Gas Company, LP proposed Davis A Federal 1P natural gas well and pipeline project. Submitted to BLM Farmington Field Office. 18 p.
Porter, J.M. and L.M. Prince. 2011. Report on the evidence supporting generic and species circumscriptions in the genus Sclerocactus with recommendations for a biologically justified taxonomy that will be stable into the future; and biological assessments
Creeden, E. 2015. GIS shapefiles of Brack's cactus locations detected during clearance surveys. SWCA Environmental Consultants.