The Thunberg lily (Lilium maculatum) belongs to Liliaceae (the Lily family). It is a perennial herb that is distributed to Honshu in Japan, northward from the Kii Peninsula of the Pacific Ocean Side, and northward from Niigata prefecture of the Japan Sea Side. This herb grows on the coastal gravelly beaches and rocky places, and can reach 20-60 cm in height. The leaves are lanceolate, thick and densely-arranged in alternate. The yellow-red with red-brown mottles flowers bloom on the top of stems from June to August. It has been cultivated as an ornamental plant from ancient days, and bred many cultivars.