Ladyman, J.A.R. and Y. Chauvin. 1998. Survey for sensitive plant species on the El Malpais National Conservation Area. Unpubl. report by New Mexico Natural Heritage Program for Bureau of Land Management, Albuquerque Field Office. 51 p.

• Phacelia serrata
• Knowlton's cactus
• El Malpais National Conservation Area
• Erigeron acomanus