Sparganiaceae and typhaceae

Abstract

Unlike previous parts of the Northwest European Pollen Flora the present part deals with two families together. The results show, that the pollen grains of Typha angustifolia are so similar to those of some Sparganium species that they have been included in a single pollen type. Also the two genera are taxonomically so close to one another that it seems not only logical but merely practical to combine them in one part.