Hybridization and regional variation in Pacific Northwestern Impatiens (Balsaminaceae) Robert Ornduff OriginalPaper Pages: 122 - 128
Meadow fescue: Festuca elatior L. or F. pratensis Hudson? Edward E. Terrell OriginalPaper Pages: 129 - 132
Ecotypic response to ultramafic soils by some plant species of northwestern United States Arthur R. Kruckeberg OriginalPaper Pages: 133 - 151
Terpenes as taxonomic characters in Salvia section Audibertia William A. EmbodenHarlan Lewis OriginalPaper Pages: 152 - 160
Anatomy and systematic position of Uldinia (Umbelliferae) William L. Theobald OriginalPaper Pages: 165 - 173
Experimental studies of variation in hepaticae. I. Induced variation in lophocolea heterophylla Raymond E. Hatcher OriginalPaper Pages: 178 - 201