On the species of the taxonomist in its relation to evolution J. P. Lotsy OriginalPaper Pages: 1 - 16
The progeny of a heteroploid (N. Tabacum x N Rusbyi) x N. Tabacum plant Dontcho KostoffJames Kendall OriginalPaper Pages: 17 - 26
Ring-formation in diploid and polyploid campanula persicifolia A. E. GairdnerC. D. Darlington OriginalPaper Pages: 113 - 150
Bedeutung der Genetik in der Systematik und Geographie der Pflanzen A. Zämelis OriginalPaper Pages: 151 - 182
The chromosome constitution of Cardamine pratensis and Verbascum phoeniceum W. J. C. Lawrence OriginalPaper Pages: 183 - 208