Pollen morphology and evolution of Sarcolaenaceae (Chlaenaceae) Sherwin Carlquist OriginalPaper Pages: 231 - 254
Argythamnia guatemalensis and A. tinctoria (Euphorbiaceae) John Ingram OriginalPaper Pages: 271 - 275
A revision of Aletes and Neoparrya (Umbelliferae) William L. TheobaldCharles C. TsengMildred E. Mathias OriginalPaper Pages: 296 - 315
Taxonomy of Machaeranthera sect. Psilactis (Compositae—Astereae) B. L. TurnerDavid Horne OriginalPaper Pages: 316 - 331
Reederochloa, a new genus of dioecious grasses from Mexico Thomas R. SoderstromHenry F. Decker OriginalPaper Pages: 334 - 339