Effects of Nitrogen Application on the Growth and Photosynthetic Characteristics of Calophyllum inophyllum Seedlings Axillary Bud Propagation and Regeneration from Stem Segment Explants in Calophyllum inophyllum Chemical Constituents from the Twigs of Calophyllum inophyllum Linn. The Silviculture of Calophyllum polyanthum (Guttiferae)in China Research progress of chromanone derivatives from Calophyllum Studies on flavonoids from stems and leaves of Calophyllum inophyllum