Chemotaxonomic studies on flavouoids constituents of Zygophyllaceae in China The Chemical Constituents from Dracocephalum tanguticum Maxim. Callus Cuture and Flavonoids Production of Saussurea medusa Influencing factors on stability of hawthorn leaves total flavonoids-phospholipid complex Influencing factors on stability of hawthorn leaves total flavonoids-phospholipid complex Analysis on Chemical Composition of Genus Pueraria Stems from China Isolation and identification of extract from Casuarnia equisetifolia branchlet and its allelopathy on seedling growth The Comparision on the Antioxidant Activities of Methanol Crude Extracts From Three Tropical Fruit Tree Leaves