Studies in the Capparidaceae—VII old world Cleomes adventive in the new world Hugh H. Iltis OriginalPaper Pages: 279 - 294
Location and housing of institutional herbaria in The United States and Canada A. R. Kruckeberg OriginalPaper Pages: 295 - 297
The hybrid nature of Viola emarginata (Nuttall) Leconte Norman H. RussellArthur C. Risser OriginalPaper Pages: 298 - 305
Studies on Lactarius-II The North American species of sections Scrobiculus, Crocei, Theiogali and Vellus L. R. HeslerAlexander H. Smith OriginalPaper Pages: 306 - 350