A morphological and chemical analysis of geographical variation in Tilia L. of eastern North America L. G. HickokJ. C. Anway OriginalPaper Pages: 2 - 8
Numerical analyses of some common errors in chemosystematics Robert P. Adams OriginalPaper Pages: 9 - 21
Parmelia pustulifera, a new lichen from southeastern United States Mason E. Hale OriginalPaper Pages: 22 - 27
A systematic study of the Fasciculatae group of Vernonia (Compositae) Samuel B. Jones OriginalPaper Pages: 28 - 45
Seed protein polymorphism in Phlox pilosa (Polemoniaceae) Donald A. LevinBarbara A. Schaal OriginalPaper Pages: 46 - 56
The experimental verification of natural hybridization between two taxa of Hawaiian Bidens (Asteraceae) Jo Anne MenschGeorge W. Gillett OriginalPaper Pages: 57 - 70
Observations of meiotic chromosomes in Gaura (Onagraceae) Peter H. RavenDavid P. Gregory OriginalPaper Pages: 71 - 86
Lobing of the disk flower corollas in North American Coreopsis (compositae) Edwin B. Smith OriginalPaper Pages: 87 - 89
Philactis fayi (Compositae) : A new species from Mexico Andrew M. Torres OriginalPaper Pages: 90 - 92
A reconsideration of Ada and the glumaceous brassias (Orchidaceae) Norris H. Williams OriginalPaper Pages: 93 - 110
