Pollen morphology of the Loranthaceae from China Pollen Morphology of Asarum in China STUDIES ON POLLEN MORPHOLOGY OF GENUS POTENTILLA SENSU LATO (ROSACEAE) Pollen Morphology of the Genus Nomocharis and Its Delimitation with Lilium Pollen Morphology of Calligonum in China and Its Stratigraphical Significance STUDIES ON POLLEN MORPHOLOGY OF SOME LILIES STUDIES ON THE POLLEN MORPHOLOGY OF NINE SPECIES OF GENUS ACTINIDIA Investigation on Pollen Morphology of Aconitum L. Comparative pollen morphology of Glechoma and Marmoritis (Nepetinae, Lamiaceae)