Bibiography:  Reference Listing
for the Crassulaceae

Britton, N.L. and J.N. Rose. 1905. Crassulaceae N. Amer. Fl. 22:7-74.

Clausen, R. T. 1975. Sedum of North America, north of the Mexican Plateau. Cornell University Press, Ithaca, NY.

Cody, W.J. 1954. A history of Tillaea aquatica (Crassulaceae) in Canada and Alaska Rhodora 56:96-101.

Crosswhite, F.S. 1984. Crassulacean acid metabolism Desert Pl. 5:192.

Spongberg, S.A. 1978. The genera of Crassulaceae in the southeastern United States J. Arnold Arbor. 59:197-248.

T™lkin, H.R. 1977. A revision of the genus Crassula in southern Africa Contr. Bolus Herb. 8:1-595.

Walther, E. 1972. Echeveria. California Academy of Sciences, San Francisco.

White, H.L., W.C. Holmes, and J.R. Singhurst. 1998. Comments on the distribution of Sedum pulchellum (Crassulaceae) in Texas Sida 18 (In Press).