China. Firminger says this plant never fruits in Bengal. The flowers are bright yellow, of the size and form of a pin head and are delightfully fragrant. Fortune says it is the lan-hwa u yu-chu-lan of China and that the flowers are used for scenting tea. Smith says it is the san-yeh-lan of China, that the flowers are used for scenting tea and that the tender leaves are eaten as a vegetable.