Perennial herbs (grow for several years from their same root system) found in tree shades and streamside in mountain. This is only grass plant in rutaceae native to Japan. Have half-transparent oil spots that are unique to plants in rutaceae family. Have strong scent and often used as anti-insect agent. Flowers are 5 mm in diameter with four petals and stamen protrude long. Color is white and bloom many on inflorescence. The Japanese name Matsukaze-so litearlly meaning pine breeze plant was named because it resemble pine branch looking wijnruit which is also a grass plants in rutaceae family native to Southern Europe. Leaves are tripinnately compound leaf, a set of three leaves divided into three branches. Each leaf is upside down egg-shaped and 1 to 2..5 cm long. Texture is soft and white on the back. After flowering, bear 3 mm long fruits split into four. Pop when ripen and some seeds inside.

●Season　　Late August to about Early October
●Height　　about 50 to 80 cm
●Place　　Trail 1 to 6, Ura-Takao, Oku-Takao