Fragua, S. Ross, D. Mercurio, C. Kastner, T. Kilday, L. Koehn, G. Salmon, M (1998) Sensitive Plant Site Report, Population Site Report, Lincoln National Forest, Field Notes. Guadalupe Ranger District, Lincoln National Forest, USFS. 4 p.

• Echinocereus fendleri var. kuenzleri