"Medo-hagi" (Lespedeza juncea var. subsessilis) belongs to the family Fabaceae (the Pea family). It is a perennial herb that is distributed to all over Japan, as well as widely the Korean Peninsula, China and East Asia. This herb grows in waste grounds or moors, and can reach 60-100 cm in height. The leaves are trifoliate with appressed hairs on the rear surfaces, and arranged in alternate. The small, white, papilionacenous flowers bloom on the axils from August to October. The flag petals have purple mottles.