Verbatim text: Köhler, E. 1976. Pollen dimorphism and heterostyly in the genus Waltheria L. (Sterculiaceae). In: I. K. Ferguson and I. Muller, eds. The Evolutionary Significance of the Exine. London. Pp. 147–161.
Author: Köhler, E.
Year: 1976
Title: Pollen dimorphism and heterostyly in the genus Waltheria L. (Sterculiaceae)
Editor: Ferguson, I.K.Muller, I.
Book title: The Evolutionary Significance of the Exine
Pages: 147–161