Abstract
The palynological work is one of the methods of investigation about ancient Plant concerned with nature of coal, and many results of pollen analyses on Japanese coal are obtained from the important coal fields in Hokkaido, Honshu and Kyushu.
According to the results, the pollens of broad leaved trees are found predominantly from Paleogene coal, and those of conifer and monocotyledon are also found. On the contrary, in Neogene coal, the conifer pollens are abundant.
