Shen Collection, Upper Volume Radical: Grass (cǎo) 蕎 Kangxi strokes: 18 Page 1057, Entry 01 Tang Yun: Pronounced jiao. Erya, Explanation of Plants: Qiao is qianju. Annotation: A medicinal plant, daji (a type of spurge). Materia Medica: Its root is pungent and bitter, irritating the throat, hence the name. Also, Guang Yun: Pronounced jiao. Yun Hui: Pronounced jiao. Yu Pian: Buckwheat. Materia Medica: Buckwheat stems are weak and stand erect, easy to grow and harvest; it is ground into flour like wheat. Poem by Bai Juyi: Buckwheat flowers spread out white.