Shen Collection, Upper Volume Radical: Grass (cǎo) Tang pronunciation: tang Classic of Rites (Erya), Chapter on Explaining Plants: Zhu-tang is horse-tail. Commentary: In the region west of the pass it is called tang; in the region east of the Yangtze River it is called dang-lu; it is simply pokeweed. Also, Collected Rhymes (Jiyun): Pronounced chang. The meaning is identical. Sometimes written in a simplified variant form. Page 1061, Entry 21