Cytogeography of achillea millefolium in Western Oregon Ronald J. Tyrl OriginalPaper Pages: 215 - 223
The correct name of an hawaiian rubiaceous tree: Gouldia Affinis Vs. Gouldia Terminalis Robert L. Wilbur OriginalPaper Pages: 224 - 226
A serological and disc electrophoretic study of North American Typha D. W. LeeD. E. Fairbrothers OriginalPaper Pages: 227 - 243
A re-evaluation of polypodium bradeorum and P. Colysoides A. Murray EvansJohn T. Mickel OriginalPaper Pages: 255 - 260
Studies in the eupatorieae (Compositae). XVI a monograph of the genus Decachaeta DC R. M. KingH. Robinson OriginalPaper Pages: 275 - 284
Studies in the eupatorieae (Compositae). XVII. The genus erythradenia (B. L. Robinson) R. M. King and H. Robinson R. M. KingH. Robinson OriginalPaper Pages: 285 - 285
Ecology, morphology, and systematics of jepsonia (Saxifragaceae) Robert Ornduff OriginalPaper Pages: 286 - 298