82 species are found in Indo Malaysia, China and Japan. Tea Plant Young shoots consisting of buds and two or more leaves are picked and dried to form tea. Processed tea contains small amounts of essential oil which constitutes the odour. Reactions to salicylate are noted under Betula .
Theophylline is present in small amounts in tea.
Schima 15 species are found from the eastern Himalayas to Formosa and western Malaysia. Allergic eczematous sensitivity to aminophylline. Skin-Irritant and Sensitizing Plants found in India, New Delhi. P.N. Behl, Irwin Hospital. V.C.G. Gatrell, Government Printer.