Plant commentary： Perennial . Height 1 ~ 2m. Dioecious . Thick rhizome is elongated in all directions , creating a community sprouted from the section . Elongation bamboo shoot -like sprouts that contains the calf color of the spots in the green skin , the wood of becomes older . Leaves and alternate , triangular -shaped oval – Hirotamagogata of length 6 ~ 15cm. Edge is wavy , red mottle comes into young leaves . Out branches from the axils , it puts a large number of small flowers tinged with white and yellow to red in the earlier spikes . Becomes ripe actually to dark brown in the fall , it is the seed that there is a three wings.
Origin and distribution： East Asia native species . Hokkaido distributed from ( the western south ) in Kyushu , sunny hills , mountains of the forest edge , wasteland , road side of the mountains , Dotsutsumi , grows like Kawahara . In addition , Korea , Taiwan , also distributed in China .
Purpose and effect： Bite or as it is , to adjust the taste Sprinkle the salt . Fruit juice with a salted and frozen storage in Kochi , boiled , stir-fried , marinated , pickled , vinegared , to flyers sushi . It remains raw , heaven bra , in such instant pickled . In addition , it is also used as a stain and feed plant . Take the rhizome by the time the above-ground parts were withered , and sun-dried in well-ventilated place to wash , Tsukei , diuretic , laxative warm , chronic bronchitis , burns caused by hot water , used for the bruise . Although the above-ground parts , including the anti-aging , anti- metabolic component called resveratrol , which is a kind of polyphenol , components that emodin is also included , to food is not safety has been established .