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