ユリ科ショウジョウバカマ属の常緑多年草で、学名は Heloniopsis orientalis。英名は Japanese hyacinth。
The Japanese hyacinth (Heloniopsis orientalis) belongs to Liliaceae (the Lily family). It is an evergreen perennial herb that is distributed all over Japan, as well as the Korean Peninsula and Sakhalin. This herb grows in montane wet places and can reach 10-30 cm in height. The basal leaves form rosette and it grows up flowering stalks with scaly leaves at the center. The pink, pale rose-pink or deep purple flowers come in the racemes from April to July. The Japanese name is said to be derived from the resemblance of the flowers to the red face of a "shojo" (Orangutans) and the leaves to "hakama" (traditional Japanese trousers).