As the result of our vegetational survey, the following types of communities are recognized from “Chichibu” district, which is located to the Pacific slope of Kantô range, central Japan. The montane belt, bellew 1600m alt. Tsuga Sieboldii community, on mountain ridges Tsuga-Betula-Fagus-Rhododendron community Quercus-Tsuga-Ainsliaea community Chamaecyparis obtusa community Fagus crenata community, on the deep soil of mountain sides Fagus crenata-Sasamorpha community Fagus crenata-Fagus japonica-Sasamorpha community Fagus-Quercus-Sasamorpha community Fraxinus commemoralis community, on the moist gravellous soil of the valley Fraxinus-Aesculus-Pterocarya-Acercommunity Chamaecyparis pisifera community Subalpine belt, 1600-2500m alt. Tsuga diversifolia community, bellow 2000m alt. Abies homolepis community Larix Kaempferi community Picea bicolor community Betula Ermani community Thuja Standishii-Pinus pentaphylla community Tsuga diversifolia community Abies Veitchii-Abies Mariesii community, above 2000m alt. Abies Mariesii community Abies Veitchii community Pinus pumila-Vaccinium hirtum-Vaccinium Vitis-ldaea community, above 2500m alt. Pinusa pumila-Rhododendron chrysanthum-Empetrum nigrum-Cetraria crispa-Cladonia alpestris-Cladonia rangiferina community Pinus pumila-Rhododendron Fanriei-Pleurozium Schreberi-Hylocomium community