What is Bistorta japonica

Bistorta japonica (scientific name:Bistorta officinalis subsp. japonica) is a perennial herb of Polygonaceae the family, of the genus Bistortanative to Japan. It grows a lot wild in Ibukiyama and lets a white blossom bloom in the raceme which lengthened from a flower stalk. The rhizome is called Jin Ken (a fist comes) and is considered to be antibacteria and an antitussive medicinal herb. From the flower looks like a tiger's tail that was named master. Looks like a white 5 petaled flower 5 deep-lobed calyx and no petals.Rhizomes are called security slot (fist 3), antibiotic or antitussive herbs.

General name:Bistorta japonica,
Scientific name:Bistorta officinalis subsp. japonica ,
Origin Habitat distribution: Japan, Hokkaido-Kyushu Japan, environment: Alpine and mountain pasture, living type: subalpine perennial plant: 30 ~ 100 cm, petioles of the leaves long oval long oval-elliptical-lanceolate, leaf margin: entire and leaf length: 20 cm, foliage leaf arrangement: alternate, Inflorescence type: raceme inflorescence length 3-8 cm, petals: no, and flower (actually the calyx color): white-pink or flowering (calyx): June to August, flowers (calyx) diameter:0.3cm. Calyx (looks like a flower): 5 crack, number of columns: 3, number of stamens: 8, applications: raw salts