Three new species of Cuphea (Lythraceae) from Mexico Shirley A. Graham OriginalPaper Pages: 227 - 230
Rhodophylloid fungi of the pacific coast (United States) I: Type studies and new combinations of species described prior to 1968 David L. Largent OriginalPaper Pages: 238 - 245
Secondary intergradation and genome incompatibility in Phlox pilosa (polemoniaceae) Donald A. LevinMorris Levy OriginalPaper Pages: 246 - 265
Chromosome numbers of Costa Rican grasses Richard W. PohlGerrit Davidse OriginalPaper Pages: 293 - 324