Study on Chemical Components of Davidia involucrata Baill. Native to China A new prenylated flavanone from Mallotus apelta Chemical constituents in whole herb of Cardiospermum halicacabum (I) Studies on Cheinical Constituents of Sageretia theezans Brongn. Chemical constituents from barks of Quercus mongolica Studies on Chemical Constituents of Emmenopterys henrys Oliv. Native to China A Study on Chemical Components of Tetrastigma hemsleyanum Diels et Gilg .Native to China Studies on Chemical Constituents in tlte Leaves of Mangifera persiciformis C.Y.Wu et Y. L.Ming