Pollen grains of 20 species belonging to 7 genera of Polygonaceae represented in the Flora were studied using
Light and Scanning Electron Microscope. Pollen characters, including those of size, shape, exine sculpture and
structure of the aperture allowed the recognition of five pollen types: Atraphaxixs, Calligonum-Oxygonum,
Persicaria, Polygonum and Rumex-Emex types. A key for the seperation of the different types is provided and
the pollen morphology in relation to taxonomy of the investigated taxa is briefly discussed.