Dayeyu;Colocasiae Giganteae Rhizoma Sources:The drug is the dried rhizome of Colocasia gigantea(BI.)Hook. f.(Family Araceae),growing in moist area in woods or crevies.distributed in Jiangxi,Fujian,Guangdong,Guangxi and Yunnan,cultivated in Eastern China. Actions and Indications:The rhizome is used as febrifuge,antioncotic,expectorant and antispasmodic,for the treatment of pyogenic infections,traumatic injury,snakebite,sores.