Decaffeination this trait could be bred into other coffee plants by crossing them with "C. charrieriana", or an equivalent effect could be achieved by knocking out the gene for caffeine synthase in normal coffee plants. Tea may also be decaffeinated, usually by using processes analogous to the direct method or the CO process, as described above. The process of oxidizing tea leaves to create black tea ("red" in Chinese tea culture) or oolong tea leaves from green leaves does not affect the amount of caffeine in the tea, though tea-plant subspecies (i.e., "Camellia sinensis sinensis" vs. "Camellia sinensis assamica") may differ
Camellia sinensis popular teas. "C. sinensis" var. "waldenae" was considered a different species, "Camellia waldenae" by SY Hu, but it was later identified as a variety of "C. sinensis". This variety is commonly called Waldenae Camellia. It is seen on Sunset Peak and Tai Mo Shan in Hong Kong. It is also distributed in Guangxi province, China. Three main kinds of tea are produced in India: Tea leaves are eaten by some herbivores, like the caterpillars of the willow beauty ("Peribatodes rhomboidaria"), a geometer moth. Although health benefits have been assumed throughout the history of using "Camellia sinensis" as a common beverage,