味酸,寒,有小毒。主丁肿恶疮,驴马脊疮,臭腋,石上水磨取汁涂之。其丁肿,末之敷疮上,良。www.med126.com/jianyan/今按别本www.med126.com/hushi/注云∶状如姜石而有铜星,熔取铜也。(唐本先附)