Deciduous shrubs found on slopes and at forest edges on streamside. Grow by extending many branches. Barks are dark gray and smooth. Young branches are brown with hair but turns grayish-white on the following year. Flowers resemble hydrangea and trees resemble deutzia crenata, hence the Japanese name Gaku-utsugi literally meaning hydrangea deutzia crenata. Leaves are 4 to 7 cm long, elongated oval-shaped and opposite. Tips are pointed, texture is shiny and have toothed margins (edges of leaves are like a teeth of saw). Another name is kon-teri-gi literally meang dark blue shine tree was named because the plant looks dark blue and reflects metallic shine. The blooming season is from May to June. Bloom light yellow-green flowers on 7 to 10 cm long inflorescence grow from branches. 2.5 to 3 cm long and white (surround inflorescence have no stamen or pistills) surround this flower.

●Height about 1 to 1.5 m
●Place Trail 4, Trail 6