The fine structure of the pollen of Eupomatiaceae

Abstract

Pollen of Eupomatia laurina R. Br. and of Eupomatia bennertii F. Muell. are described. The pollen of both species is subspheroidal with a zonizonasulculus (a band-like, encircling aperture at the equator). E. laurina has a less dense and more vacuolated pollen containing lipids. E. bennettii has a dense pollen with many starch granules. Differences occur in their wall layers, especially in the aperture, but basically both species have an atectate, psilate pollen of medium size.