References
Matthews, J.F., D.W. Ketron, and S.F. Zane. 1993. The biology and taxonomy of the Portulaca oleracea L. (Portulacaceae) complex in North America. Rhodora 95: 166-183. Google Scholar
Matthews, J.F., D.W. Ketron, and S.F. Zane. 1993. The biology and taxonomy of the Portulaca oleracea L. (Portulacaceae) complex in North America. Rhodora 95: 166-183. Google Scholar