Vaccinium bracteatum Thunb, formerly known as "Southern Candle", is also known as "Dyed Osmunda", "Vaccinium bracteatum Thunb", and its Latin name is Vaccinium bracteatum Thunb. Vaccinium bracteatum Thunb is an evergreen shrub or small tree of Ericaceae and Vaccinium. Its racemes are terminal and axillary, with many flowers, and its sequence axis is densely pubescent and sparse. Purple-black when ripe, usually pubescent and sparsely hairless outside. The flowering period is June-July, and the fruiting period is August 8- 10/October. The fruit tastes the same as blueberry. They are mostly distributed in China, Zhejiang, Fujian, Jiangsu, Anhui, Jiangxi, Hunan, Hubei, Guangdong, Taiwan Province and other places. 1 has the effects of nourishing yin and yang, improving eyesight and strengthening kidney, hence the name Vaccinium bracteatum.