Library

(Recorded in the Lower Category of *Shennong Bencao Jing*)

**[Names]** Yazi (from *Benjing*), Yelangchi (from *Bielu*), Yelangzi (from *Bielu*), Canine Tooth (from Wu Pu), Baoya (from Wu Pu), Zhilan (from Li Dangzhi).
Tao Hongjing stated: Its teeth resemble those of beasts, hence these names.

**[Collection and Explanation]** *Bielu* records: Yelangya grows in the river valleys of Huainan and the Yuanju region. The roots are harvested in August and sun-dried. Those that have rotted due to dampness and developed fungal growth are poisonous to humans.
Wu Pu stated: The leaves are green, the roots yellowish-red. It flowers in June and July, and the fruit turns black in August. Roots are harvested in January and August.
Su Baosheng stated: It is found everywhere. The seedlings resemble *Duchesnea indica* (Snake Strawberry) but are denser and larger, with a deep green color. The roots are black and shaped like beast teeth. Roots are harvested in March and August and sun-dried.
Su Song stated: It is now abundant in the prefectures of Jiangdong and east of Bian.
Li Shizhen stated: *Fanzi Jiran* records: It originates from Jiankang and Sanfu regions; those with white color are superior.
Root

**[Flavor and Properties]** Bitter, Cold, Toxic. *Bielu* records: Sour. Wu Pu stated: Shennong and Huangdi considered it bitter and toxic. Tong Jun considered it pungent; Qibo, Leigong, and Bian Que considered it bitter and non-toxic.
Xu Zhicai stated: *Wuyi* serves as its guiding herb; it is incompatible with *Diuyu* (Sanguisorbae Radix) and *Zaoji*.

**[Indications]** Evil qi and hot qi, scabies, foul sores, ulcers, and hemorrhoids; expels tapeworms (*Benjing*). Treats wind-heat pruritus; decoct the juice to wash foul sores (Zhen Quan). Kills all parasites in the abdomen and viscera; stops bloody and white dysentery; decoct...

**[Prescriptions]** Six old prescriptions, four new prescriptions.
Golden wound bleeding: Take the stems and leaves of Yelangya grass, crush them thoroughly, and apply externally. (*Zhouhou Fang*)
Hematuria: Jinshu Yelangya grass (roasted dry, stir-fried with clam powder), Sophora flower (*Huaihua*), and Baiyaojian in equal parts. Grind into powder. Take 3 qian each time, mixed with rice washing water on an empty stomach. Also treats alcohol-related ailments. (*Weisheng Yijian Fang*)
Tapeworms and other parasites: 5 liang of Yelangya. Crush into powder, make pills with honey the size of hemp seeds. Fast overnight, and the next morning swallow one he with grain water. Complete cure upon finishing the dose. (*Source incomplete*)
Parasitic sores and itching: Harvest Yelangya leaves before June, and roots after June. Chew raw, wrap in wooden leaves, roast over fire, and stop when cool. (Yang Yan, *Nanxing Fang*)
Pediatric genital ulcers: Decoct Yelangya grass strongly and wash the affected area. (*Qianjin Fang*)
Female genital pruritus: 2 liang of Yelangya, 3 liang of Cnidium fruit (*Shechuangzi*). Decoct with water for hot washing. (*Waitai Miyao*)
Female genital erosive ulcers: Yelangya Decoction: Use 3 liang of Yelangya, add 4 sheng of water, decoct until half a sheng remains. Wrap cotton around chopsticks, dip in the decoction, and drip/wash the area, 4-5 times daily. (Zhang Zhongjing, *Jingui Yufan*)
Otorrhea (Ear discharge): Grind Yelangya into powder, wrap in silk/cotton, and insert into the ear daily. (*Shenghui Fang*)
Viper bite: Single-stem Yelangya root or leaf, crush into a paste, mix with lard from the twelfth lunar month, and apply. Immediate cure. (Cui Shi's Formula)
Splay-riddle (Archery Bug) induced sores: Yelangya. Harvest roots in winter, leaves in summer. Crush and drink the juice (4-5 he), and apply externally. (*Qianjin Fang*)