Overgrowth grass growing in wetlands and waterways such as rims of ponds. In Munakata look around Yoshida Reservoir. A height of 20 to 30 cm, with white flowers similar to Sengli in autumn. Inside of the flowers it is a good distinction that long hair that is crimped densely and honey glands can not be seen. There is no bittern like Senri but its medicinal effect is unknown.
Recently the waterside environment deteriorated and the habitat and the number of individuals are decreasing.