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 taliensis Camellia taliensis Camellia taliensis (also Yunnan large leaf varietal tea, wild tea, 大理茶) is a species of evergreen shrub or small tree whose leaves and leaf buds are used to produce tea. It is of the genus "Camellia" of flowering plants in the family Theaceae. "C. taliensis" is an important wild relative to the cultivated the tea plant "Camellia sinensis." It also belongs to the same section "Thea" as "C. sinensis." It is an endangered species due to human overpopulation causing fragmentation of the plant's natural habitat and from overpicking of the leaves for the tea market. "Camellia talensis" has