Prunella vulgaris L. 夏枯草 (Xiakucao, Common Selfheal)

Xiakucao is distributed chiefly in the temperate zone and tropical mountains of Europe and Asia. It is mainly found in Jiangsu, Anhui, Zhejiang and Henan provinces in China, usually on wasteland or the thick patches of grass at roadsides. The dried spica of Prunella vulgaris is used in traditional medicine.