Echinocereus fendleri var. kuenzleri
Fragua, S. (2014) Inventory Completion Report, Sensitive Plant Survey, Lincoln National Forest, Field Notes. Project Name: FSRD 511 (Big Chief Tank) Kuenzler Survey. Guadalupe Ranger Distirct, Lincoln National Forest, USFS. 8 p.
Chauvin, Y., Muldavin, E., Varani, H. and H. Hulse. 2012. Excel spreadsheet of Kuenzler's cactus data collected for BLM project. Natural Heritage New Mexico.
Baker, M. 2007. Defining populations of the Kuenzler's hedgehog cactus (Echinocereus fendleri var. kuenzleri): a multivariate study of morphological characters. United States Forest Service (USFS) Regional Office, Albuquerque, NM. p.3.
Fragua, S. (2004) Sensitive Plant Site Report, Population Site Report, Lincoln National Forest, Field Notes. Guadalupe Ranger District, Lincoln National Forest, USFS. 6 p.
Fragua, S. (2003) Inventory Completion Report, Sensitive Plant Survey, Lincoln National Forest, Field Notes. Project Name: Ecinocereus fendleri var. kuenzleri. Guadalupe Ranger District, Lincoln Natinal Forest, USFS. 4 p.
Paul, L. (2002) Sensitive Plant Monitoring Report, Population Site Report, Lincoln National Forest, Field Notes. Lincoln Supervisor's Office, Lincoln National Forest, USFS. 12 p.
Paul, L.W. (2002) Sensitive Plant Monitoring Report, Population Site Report, Lincoln National Forest. Echinozcereus fendleri var. kuenzleri. Guadalupe RD, Lincoln NF, USFS. 4 p.
Paul, L.W. (2002) Sensitive Plant Site Report Population Site Report, Lincoln National Forest. Echinocereus fendleri var. kuenzleri. Guadalupe RD, Lincoln NF, USFS. 4 p.
Fragua, S. (2002) Inventory Completion Report, Sensitive Plant Survey, Lincoln National Forest, Field Notes. Project Name: Echinocereus var. fendleri kuenzleri. Guadalupe Ranger District, Lincoln National Forest, USFS. 4 p.
Fragua, S. (2002) Multiple Bundled Inventory Completion Reports, Sensitive Plant Survey, Lincoln National Forest, Field Notes. Project Name: Echinocereus var. fendleri var. kuenzleri. Guadalupe Ranger District, Lincoln National Forest, USFS. 28 p.