Dayegusuibu;Davalliae Divaricatae Rhizoma Sources:The drug is the dried rhizome of Davallia divaricata Bl.(Family Davalliaceae),growing in rocks of hilly valleys,distributed in Fujian,Taiwan,Guangdong,Guangxi and Yunnan of China. Constituents:The aerial part contains(-)-epicatechin-3-O-β-D-allopyranoside,davallic acid. Actions and Indications:The rhizome is used to strengthen the muscles and the bones,tonify the kidney to arrest spontaneous emission,remove blood stasis and alleviate pain,for the treatment of deficiency of kidney,rheumatic osteodynia,traumatic injury and dysentery.