Studies on Chemical Constituents in Aerial Part of Ampelopsis grossedentata(Hand. Mazz.) W.T. Wang cDNA cloning and protein sequence analysis of chalcone synthase gene in leaves of Ampelopsis grossedentata A Pharmacognostical Study on “Tengcha”, Bigdentate Ampelopsis(Ampelopsis grossedentata) Determination of dihydromyricetin in Ampelopsis grossedentata by RP-HPLC A New Variety of Ampelopsis grossedentata —Lüfeng Separation and purification of total flavones in Ampelopsis grossedentala by macroporous resins Separation and purification of total flavones in Ampelopsis grossedentala by macroporous resins