They are perennial plant that grows at the forests along the mountain stream and at the pool of forests. (Perennial plant takes several years to grow). They are well-known as a poisonous plant, all the portions of this grass contain deadly poison named aconitine, and eating by mistake brings about cramp and respiratory distress to lead those who to death. The stalk is upright at the plain field, but bends backward in the forest. The shape of the flower looks like ‘Torikabuto’ which means a Chinese phoenix’s head shaped crown that ancient dancer wears for court dance and music. This is why they are named. The flower is vivid bluish-purple about 3 cm long. What looks like flowers consists of 5 sepals with a real petal inside of it. The leaf is about 6 to 20 cm long and grows alternative on the stalk. The leaves have 3 to 5 lacinia split into half, have a rough sawtooth at the edge (Kyoshi: tooth-like rough part like a saw at the root of a leaf). After flowers wither, they bear 3 to 5 seeds. When matured, the seeds get split up and produce the seeds with shallow wrinkles.

●Season　　Late September to about Late October
●Height　　about 40cm to 1m
●Place　　Ura-Takao