Chen Collection, Middle Volume Radical: Tree (mù) Kangxi stroke count: 14 Page 545, Entry 14 Pronounced gu (rising tone). Jade Chapters (Yupian) states: Gougu wood is used for arrow shafts. Illustrated Classic of Materia Medica (Bencao Tujing) records it as dog-bone wood; its body is white like bone, hence the name. People of the south take it to make boxes, which are very fine.