2018 年 25 巻 1 号 p. 21-36
A comprehensive phytosociological system of Japanese forest vegetation has not been published for 24 years since Miyawaki, Okuda & Fujiwara (1994). In this report, we reorganized the phytosociological system of the order Tsugetalia sieboldii Suz.-Tok. 1966 in the class Fagetea crenatae Miyawaki, Ohba et Murase 1964 according to the latest scientific articles and phytosociological nomenclature. Several vegetation units were integrated based on the presence of characteristic species and the extent of distributional range. We found 8 alliances and 57 associations in the order Tsugetalia sieboldii in the Japanese archipelago and described the synonyms and ecological characters of vegetation units. And vegetation units judged to be relative to the Tsugetalia sieboldii were 2 alliances and 12 associations.