"Tsuru-kanoko-so" (Valeriana flaccidissima) belongs to Valerianaceae (the Valerian family). It is a perennial herb that is distrubuted from Honshu to Shikoku and Kyushu in Japan, Taiwan and mid-southern China. This herb grows in damp places such as forest floors in the mountains and along valleys, and can reach 20-40 cm in height. The basal leaves are broad-ovate, and the cauline leaves split pinnately into 3 to 7 lobes. There are wavy serrations on the edges. The hollow stems are extended, the inflorescences are borne on the tips, and the small white flowers bloom from April to May. The Japanese name comes from the fact that it spreads out from the base of the stem with runners. The young stems are used as wild vegetables.