Camellia sinensis
The Tea Camellia is a hardy evergreen shrub or small tree that is probably the most widely grown Camellia in the world traditionally used for caffeinated teas. They are harvested as the leaves emerge beginning early spring and processed in different ways to create white, green, oolong, and black teas. Smaller young leaves and leaf buds are used for making green tea, the older larger leaves for oolong and black tea, and the buds for white tea.