山茱萸科及相關諸科之花粉粒形態比較研究

Comparative Pollen Morphology of the Cornaceae and Allies

In the previous paper the phylogenetic relationships of the family Cornaceae and its allies were discussed from the viewpoint of wood anatomy. In order to supplement the results of anatomical data, pollen grains from the representative species are also examined and reported in this paper. It is a well established fact that studies of the comparative pollen morphology may yield sets of data useful in the field of plant classification. Investigations have now progressed to initiate extensive studies of specific families or groups. Citations to extent studies will be found in Wodehouse and Erdtman. Considerable differences exist in the classification of the family Cornaceae and its allied families by various taxonomists. A brief revision of the different systems of classifications of the Cornaceae and its allies was given in the previous paper. This study of pollen in the Cornaceae and its allies is pursued to aid in arriving at a more natural arrangement of the families and genera studied.