"Miyama-rindou" (Gentiana nipponica) belongs to Gentianaceae (the Gentian family). It is a perennial herb that is distributed from Chubu district of Honshu nouth to Hokkaido in Japan. It grows on moist grassland in the alpine zone, and its height is 3-15 cm. The stems crawl at the bottom and branch well. The basal leaves disappear during flowering. The cauline leaves are somewhat thick, ovate to ovate-oblong, and grow oppositely. The blue-purple to pale-purple flowers come in July to September. The crown is bell-shaped and split open, about 1.5 cm in diameter, and it has five partite lobes. The flowers are open when the sun shines and closed when it is cloudy.