Sleep food perennial marshy born herb, usually bushes. The root shape stems prostrate shape, thick, light yellow, covered with dead leaves. Three out of the compound, and was born; Lobular 3 pieces, oval, 4 ~ *0 cm long, wide 2 ~ 4 cm, edge

Margin of microwave shape, base cuneate, sessile; Total petiole *0 ~ *0 cm, the wide, slightly into scabbard shape, hold each other together. Scapes showed the YeCong born out by denis sassou-nguesso, long about *5 cm, always inflorescence shape; Pedicels **1.8 cm, base have a bracts, lanceolate; Calyx green, 5 deep cleft; Corolla white, 5 of crack, a calyx long about 3 times, lobes inside secret growth white hair; Stamens 5; Long style, stigma binary. Capsule globose, 2 crack; Seed flat circular. Sleep the root of food of flat GanWei taste bitter, non-toxic, have runfei, cough, detumescence, fall blood pressure role. Guizhou folk commonly used its fresh roots stew meat to eat or Fried water to drink, for no phlegm of dry; The northeastern folk commonly used fresh sleep edible orange roots dao juice taking, two times per day, used for high blood pressure patients.