Bibiography:  Reference Listing
for the Portulacaceae

Barker, W.T. 1986a. Portulacaceae. In: Great Plains Flora Association Flora of the Great Plains Pp. 187-190, Univ. Press of Kansas, Lawrence.

Bogle, A.L. 1969. The genera of Portulacaceae and Basellaceae in the southeastern United States J. Arnold Arbor, 50:566-598.

Carolin, R.C. 1993. Portulacaceae. IN: K. Kubitzki, J.C. Rohwer, and V. Bittrich, eds The families and genera of vascular plants, Vol. II Pp. 544-555, Springer-Verlag, Berlin.

Doyle, J.J. 1983. Flavonoid races of Claytonia virginica (Portulacaceae) Amer. J. Bot. 70:1085-1091.

Legrand, C.D. 1962. Las especies Americanas de Portulaca Anales Mus. Hist. Nat. Montevideo 7:1-147.

Lewis, W.H. 1976. Temporal adaptation correlated with ploidy in Claytonia virginica Syst. Bot. 1:340-347.

Lewis, W.H. and J.C. Semple. 1977. Geography of Claytonia virginica cytotypes Amer. J. Bot. 64:1078-1082.

Lewis, W.H., R.L. Oliver, and Y. Suda. 1967. Cytogeography of Claytonia virginica and its allies Ann. Missouri Bot. Gard. 54:153-171.

Lewis, W.H., Y. Suda, and B. Macbryde. 1967. Chromosome numbers of Claytonia virginica in the St. Louis, Missouri area Ann. Missouri Bot. Gard. 54:147-152.

Matthews, J. F., D. W. Ketron, and S. F. Zane. 1992b. The reevaluation of Portulaca pilosa and P. mundula (Portulacaceae). Sida (15)1:71-89.

Matthews, J.F. 1986. The systematic significance of seed morphology in Portulaca (Portulacaceae) under scanning electron microscopy Syst. Bot. 11:302-308.

Matthews, J.F. and D.W. Ketron. 1991. Two new combinationas in Portulaca (Portulacaceae) Castanea 56:304-305.

Matthews, J.F. and P.A. Levins. 1985. The genus Portulaca in the southeastern U.S Castanea 50:96-104.

Matthews, J.F., D.W. Ketron, and S.F. Zane. 1992a. Portulaca umbraticola Kunth (Portulacaceae) in the United States Castanea 57:202-208.

Matthews, J.F., D.W. Ketron, and S.F. Zane. 1994. The seed surface morphology and cytology of six species of Portulaca Castanea 59:331-337.

Nowicke, J.W. 1996. Pollen morphology, exine structure and the relationships of Basellaceae and Didiereaceae to Portulacaceae Syst. Bot. 21:187-208.

Rothwell, N.V. 1959. Aneuploidy in Claytonia virginica Amer. J. Bot. 46:353-360.

Rothwell, N.V. and J.G. Kump. 1965. Chromosome numbers in populations of Claytonia virginica from the New York metropolitan area Amer. J. Bot. 52:403-407.

Rydberg, P.A. 1932. Portulacaceae N. Amer. Fl. 21:279-336.