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Cologania pallida Rose

Family: Fabaceae

Distribution: Trans-Pecos Texas, southern New Mexico (western Otero county), and northern Coahuila (Turner 1992); Trans-Pecos Texas, New Mexico, Arizona, and Coahuila (Correll & Johnston 1979).

Plants Seen or Cited: There are no entries in the New Mexico Natural Heritage Program Database and there are no specimens at UNM identified as either Cologania pallida or Cologania pulchella. The only cologania at UNM is C. angustifolia (=C. longifolia).

Discussion: There is confusion between Cologania pallida as treated in Turner (1992) and Correll & Johnston (1979), and Cologania pulchella as treated in Woot. & Standl. (1915) and Martin & Hutchins (1980). Turner (1992) placed C. pulchella in synonymy under C. broussonettii, a strictly Mexican species that occurs no farther north than central Chihuahua. Turner's (1992) distribution map for C. pallida shows a location in western Otero County, New Mexico. This may mean that the plant that has been called C. pulchella in New Mexico is actually C. pallida. The distribution of C. pallida is too broad to consider it a rare species.

Important Literature:

Correll, D.S. and M.C. Johnston. 1979. Manual of the vascular plants of Texas, second printing. The University of Texas at Dallas, Richardson, TX.

Fearing, O.S. 1959. A cytotaxonomic study of the genus Cologania and its relationship to Amphicarpaea (Leguninosae-Papilionoideae). PhD Dissertation, University of Texas.

Hatch, S.L., K.N. Gandhi and L.E. Brown. No date (about 1990). Checklist of the vascular plants of Texas. The Texas Agricultural Experimental Station, Texas A&M University, College Station, TX.

Kartesz, J.T. 1994. A synonymized checklist of the vascular flora of the United States, Canada, and Greenland, second edition. Timber Press, Portland, OR.

Martin, W.C. and C.R. Hutchins. 1981. A Flora of New Mexico, vol. 2. J. Cramer, Vaduz. Pp. 1277-2591.

Roalson, E. and Allred, K.W. 1996. Interim draft copy of a working index of New Mexico plant names. Range Science Herbarium, Department of Animal & Range Sciences, New Mexico State University, Las Cruces.

Turner, B.L. 1992. Taxonomic overview of the genus Cologania (Fabaceae, Phaseoleae). Phytologia 73(4):281-301.

US Department of Agriculture. 1994. Plants of New Mexico-alphabetical listing. Soil Conservation Service, Information Resources Management Division, Fort Collins, CO.

Wooton, E.O. and P.C. Standley. 1915. Flora of New Mexico. Contributions from the United States National Herbarium, Smithsonian Institution, Government Printing Office, Washington, D.C.

Information Compiled By: David L. Bleakly, 1998

Photo credits in header Peniocereus greggii var. greggii © T. Todsen,
Lepidospartum burgessii © M. Howard, Argemone pleiacantha ssp. pinnatisecta © R. Sivinski
Design: J. Mygatt; Copyright © 1999-2005 New Mexico Rare Plant Technical Council