Cynanchum arizonicum (Arizona Swallow-wort)

Cynanchum arizonicum (Arizona Swallow-wort)

Family
ASCLEPIADACEAE
Synonyms
METASTELMA ARIZONICUM
Common Name
Arizona Swallow-wort

Distribution
Arizona, Maricopa, Pima, and Pinal counties; Mexico, Sonora (Sundell 1993). Southern Arizona in Pinal, Maricopa, and Pima counties (Shreve & Wiggins 1964).
Habitat
Among shrubs on rocky hillsides, Lower Sonoran Zone (Shreve & Wiggins 1964); rocky slopes and canyons of desert mountain ranges; 1,500-4,500 ft. (Sundell 1993).
Important Literature

Kearney, T.H. and R.H. Peebles. 1960. Arizona flora, second edition with supplement. University of California Press, Berkeley.

Martin, W.C. and C.R. Hutchins. 1980. A flora of New Mexico. J. Cramer, Germany.

Shreve, F. and I.L. Wiggins. 1964. Vegetation and flora of the Sonoran Desert. Two volumes. Stanford University Press.

Sundell, E. 1981. The New World species of Cynanchum L. subgenus Mellichampia (A. Gray ex S. Wats.) Woods. (Asclepiadaceae). Evolutionary Monographs 5:1-63.

Sundell, E. 1993. Asclepiadaceae. Journal of the Arizona-Nevada Academy of Science 27(2):182.

Wooton, E.O. and P.S. 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 Bleakly 1998

For distribution maps and more information, visit Natural Heritage New Mexico