Pu'er tea is a large tree in Xishuangbanna, Lincang, Pu'er and other regions of Yunnan Province, reaching up to 16 meters in height. The tender branches have slight hairs, and the top buds have white soft hairs. The leaves are thin and leathery, elliptical in shape. Flowers axillary, pilose. Bracts 2, caducous. Sepals 5, suborbicular, outer surface glabrous. Petals 6-7, obovate, glabrous. Stamens 8-10 millimeters long, free, glabrous. Ovary 3-loculed, furry; Style 8 mm long, apex 3-lobed. The capsule is flat and triangular in shape. 1 seed per chamber, nearly circular, with a diameter of 1 cm.