Kartesz, J.T. 1994. A synonymized checklist of the vascular flora of the United States, Canada, and Greenland. 2nd edition. 2 vols. Timber Press, Portland, OR.
Taxonomic Comments
A good species in a new world genus of about 10 species in the U.S. and Mexico.
Range Extent20,000-2,500,000 square km (about 8000-1,000,000 square miles)
Number of Occurrences81 to >300
Rank Reasons
There are only 15 occurrences documented - 10 in the Guadalupe Mountains of west Texas and 5 in New Mexico - but the species' potential habitat covers large areas in the mountains of central and southern New Mexico. It is relatively common in New Mexico.
Range Extent Comments
Trans Pecos Texas and southern New Mexico (at least 5 counties) > 40,000 square miles.
Occurrences Comments
Ten in Texas, five in New Mexico documented. 100+ estimated.
Threat Impact Comments
Habitat lends itself to few other uses.
Ecology & Habitat
Habitat
Grasslands and open pine-juniper-oak woodlands at elevations above 1830 m with rocky, calcareous soils.
Correll, D.S., and M.C. Johnston. 1970. Manual of the vascular plants of Texas. Texas Research Foundation, Renner. 1881 pp.
Flora of North America Editorial Committee (FNA). 2006c. Flora of North America north of Mexico. Vol. 21. Magnoliophyta: Asteridae, part 8: Asteraceae, part 3. Oxford Univ. Press, New York. xxii + 616 pp.
Kartesz, J.T. 1994. A synonymized checklist of the vascular flora of the United States, Canada, and Greenland. 2nd edition. 2 vols. Timber Press, Portland, OR.