Black tea Black tea Black tea is a type of tea that is more oxidized than oolong, green, and white teas. Black tea is generally stronger in flavour than the less oxidized teas. All four types are made from leaves of the shrub (or small tree) "Camellia sinensis." Two principal varieties of the species are used – the small-leaved Chinese variety plant ("C. sinensis" var. "sinensis"), used for most other types of teas, and the large-leaved Assamese plant ("C. sinensis" var. "assamica"), which was traditionally mainly used for black tea, although in recent years some green and white teas have been produced.
Camellia sinensis Asia, but it is today cultivated across the world in tropical and subtropical regions. Camellia sinensis is an evergreen shrub or small tree that is usually trimmed to below when cultivated for its leaves. It has a strong taproot. The flowers are yellow-white, in diameter, with 7 to 8 petals. The seeds of "Camellia sinensis" and "Camellia oleifera" can be pressed to yield tea oil, a sweetish seasoning and cooking oil that should not be confused with tea tree oil, an essential oil that is used for medical and cosmetic purposes, and originates from the leaves of a different plant.