Shen Collection, Upper Volume Radical: Grass (cǎo) Heng Kangxi strokes: 22 Page 1068, Entry 02 Tang Dynasty Rhyme Dictionary (Tangyun): Pronounced heng. Jade Chapters (Yupian): Fragrant herb. Approaching Elegance (Erya), Explanation of Grasses: Du, tu lu. Commentary: This is Duheng, which resembles mallow and has a fragrant scent. Tang Materia Medica (Tang bencao) Commentary: Duheng, the leaves resemble mallow and the shape is like a horse hoof, which is why it is commonly called horse hoof fragrance. Qu Yuan, Encountering Sorrow (Lisao): Mixed with Duheng and fragrant angelica. All are written as Heng. There is also Weiheng, a type of grass. Records of Marvels (Shuyiji): Weixing Xishan produces much Weiheng grass. Also, Tang Dynasty Rhyme Dictionary (Tangyun) Ancient Sounds: Pronounced hang. Qu Yuan, Nine Songs (Jiuge): White jade serves as earplugs, stones are loosely gathered as fragrance. Angelica is thatched to make a lotus cover, coiled with Duheng. Song Yu, Rhapsody on the Wind (Fengfu): Hunting for fragrant herbs, separating from Qinheng, covering with magnolia, and brushing against willow trees. Textual Research: In Song Yu's Rhapsody on the Wind, the text hunting for fragrant herbs, separating from Qinheng has been corrected from the original word mixed to separate according to the original text.