Suggestions towards unification of descriptive terminology of Angiosperm pollen grains

In this paper a descriptive terminology for angiospermous pollen grains studied with a light microscope is discussed. The requirements for terms have been formulated. On account of these the existing terms have been subjected to a close inspection. It appeared that it was necessary in few cases to introduce new terms. This was especially the case in the description of outlines in equatorial and polar view.