Pollen morphology of euphorbia caputmedusae

Abstract

A particular pollen type is observed in the species Euphorbia caputmedusae which is distributed in South Africa. The exine of this pollen is clearly rugulose and beset with coarse granules. In addition 10 to 25% of the pollen grains are heteropolar and have a characteristic aperture type which is something between tricolporate and parasyncolpate. The pollen morphology of this species gives grounds for suggesting its removal from the section Euphorbium to a separate section, as suggested by Carter (1988). © 1994 Scandinavian University Press.