Intergeneric hybrids in the lychnideae (Caryophyllaceae) A. R. Kruckeberg OriginalPaper Pages: 311 - 321
Plants of the new albany shale. II. Callixylon arnoldii Sp. Nov. Charles B. Beck OriginalPaper Pages: 322 - 327
Revision of condalia including microrhamnus (Rhamnaceae) Marshall C. Johnston OriginalPaper Pages: 332 - 368
Studies on lactarius-III The North American species of section plinthogali Alexander H. SmithL. E. Hesler OriginalPaper Pages: 369 - 440