Rohdea japonica is a species of plant native to Japan, China and Korea. Common names include Nippon lily, sacred lily, and Japanese sacred lily.

It is a rhizomatous herbaceous perennial plant with fibrous roots. The leaves are evergreen, broad lanceolate, 15–50 cm long and 2.5–7 cm broad, with an acute apex. The flowers are produced in a short, stout, dense spike 3–4 cm long, each flower pale yellowish, 4–5 mm long. The fruit is a red berry 8 mm diameter, produced in a tight cluster of several together.

Medicinal use of Rohdea japonica:

The leaves and the roots are depurative, diuretic and febrifuge.They are used in the treatment of abscesses, boils, sore throat etc. The roots are used externally as a poultice and internally as a heart and nerve tonic. The plant shows cardiac activity, rather like digitoxin (in Digitalis purpurea).

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