References
For Diamorpha
Clausen, R.T. 1975. Sedum of North America north of the Mexican plateau. Cornell Univ. Press, Ithaca, NY. Google Scholar
Moran, R.V. 2009h. Diamorpha. In Flora of North America Editorial Committee. 2009. Flora of North America north of Mexico. Volume 8, Magnoliophyta: Paeoniaceae to Ericaceae. Oxford Univ. Press, New York, NY. 585 pp. Google Scholar
Thiede, J., and U. Eggli. 2007. Crassulaceae. In Kubitzki, K., C. Bayer, and P.F. Stevens, eds. 2007. The families and genera of vascular plants. IX. Flowering plants – Eudicots – Berberidopsidales, Buxales, Crossosomatales, Fabales p.p., Geraniales, Gunnerales, Myrtales p.p., Proteales, Saxifragales, Vitales, Zygophyllales, Clusiaceae alliance, Passifloraceae alliance, Dilleniaceae, Huaceae, Picramniaceae, Sabiaceae. Springer, Berlin. 509 pp. Google Scholar
Wilbur, R.L. 1988a. What do we know about Diamorpha smallii (Crassulaceae), "one of the better-known taxa in the Southeastern flora?" Sida 13: 1-16. Google Scholar