Deciduous shrubs found in wet streamside and forest edges in mountains. Grow by extending branches. Young branches have hairs densely placed. Leaves are 10 to 20 cm long, oval-shaped and opposite. Have pointed tip with toothed margins (edges of leaves are like a teeth of saw). Also have rough hairs on both sides and rough at a touch. The Japanese name Tama-ajisai literally meaning spherical hydrangea was named because spherical buds are striking. The blooming season is from April to September and start blooming after rainy season is over. Inflorescence (flower stems) are 3 cm in diameter spherical-shaped covered with flower disks. And then, this flower disks fell apart and bloom light bue small flowers and three to five white ornamental (surround inflorescence have no stamen or pistills). Fruits are 3.5 mm long egg-shaped with pistil remain at tips.

●Height about 1 to 2 m
●Place Trail 1 and 2,Trail 4 to 6,Ura-Takao, Oku-Takao, Minami-Takao