They are a deciduous tall tree that grows wild around hilly district to the mountain areas. Cortex is ash gray color and the one of young trees is smooth feeling to touch, but once grown adult trees the cortex is split scaly. Their characteristic is they grow very rapidly, and are like to go rotten. The trunk grows to be about 1 m wide. They are planted as garden trees, and the wood is utilized for material for building construction as well as the materials to make coffins and a tall, narrow wooden tablet (Sotoba: material of Buddhism, set up behind a grave for the pray for the dead). The leaves are about 2 to 3.5 cm long and thin and long with a flat cross-sectional surface. Usually they have a little dent at the limb, but the leaves of young trees are split into 2. The blossom season is around May and hermaphroditism plant (Shiyuudousyu). Yellow male flowers consist of many male stamens gathering cylindrically on the branch that extended the previous year, while green female flowers sprout beside the leaf of the same tree. The seeds are a circular cylindrical shape alike woodsy pinecone (Matsu-bokkuri), about 10 to 15 cm long. They get matured in October, the year of blossoms, and then fall discretely.

●Height about 25 to 40 m
●Place Trail 3 and 4,Iroha