（《别录》中品）
【释名】垣嬴（《别录》）、天韭（《别录》）、鼠韭（《别录》）、昔邪（《别录》）。
【集解】《别录》曰∶垣衣生古垣墙阴或屋上。三月三日采，阴干。
恭曰∶此即古墙北阴青苔衣也。其生石上者名昔邪，一名乌韭；生屋上者名屋游。
形并相似，为疗略同。江南少墙，故陶弘景云∶方不复用，俗中少见也。
时珍曰∶此乃砖墙城垣上苔衣也。生屋瓦上者，即为屋游。
【气味】酸，冷，无毒。
【主治】黄胆心烦，咳逆血气，暴热在肠胃，暴风口噤，金疮内塞，酒渍服之。久服补
中益气，长肌肉，好颜色（《别录》）。捣汁服，止衄血。烧灰油和，敷汤火伤（时珍）。
（《别录》下品）
【释名】瓦衣（《纲目》）、瓦苔（《嘉 》）、瓦藓（《纲目》）、博邪。
【集解】《别录》曰∶屋游生屋上阴处。八月、九月采。
弘景曰∶此古瓦屋上青苔衣也。剥取用之。
时珍曰∶其长数寸者，即为瓦松也。
【气味】甘，寒，无毒。
【主治】浮热在皮肤，往来寒热，利小肠膀胱气（《别录》）。止消渴（之才）。小儿痫热，
时气烦闷（《开宝》）。煎水入盐漱口，治热毒牙龈宣露。研末，新汲水调服二钱，止鼻衄
（时珍）。
【发明】时珍曰∶《别录》主治之证，与《本经》乌韭文相同，盖一类，性气不甚辽远
也。
【附方】新一。
犬咬∶旧屋瓦上刮下青苔屑，按之即止。（《经验方》）
(Recorded in the Middle Category of *Bencao Jing Shu* / *Shennong's Classic of Materia Medica by Various Authors*)
[Names] Yuanlei (from *Bencao Jing Shu*), Tianjiu (from *Bencao Jing Shu*), Shujiu (from *Bencao Jing Shu*), Xixie (from *Bencao Jing Shu*).
[Collection and Explanation] *Bencao Jing Shu* states: Yuanyi grows in the shade of ancient walls or on roofs. It is harvested on the third day of the third lunar month and dried in the shade.
Su Gong stated: This is the green moss growing on the north side of old walls in the shade. The variety growing on stones is called Xixie, also known as Wujiu; the variety growing on roofs is called Wuyou.
Their shapes are similar, and their therapeutic effects are roughly the same. There are few walls in the Jiangnan region, so Tao Hongjing said: It is no longer used, and rarely seen among the common people.
Li Shizhen stated: This is the moss growing on brick walls and city ramparts. The variety growing on roof tiles is called Wuyou.
[Flavor and Properties] Sour, cold, non-toxic.
[Therapeutic Indications] Jaundice, irritability, cough with rebellious Qi, hematemesis and hemoptysis, sudden high fever in the intestines and stomach, trismus caused by wind-stroke, internal blockage from metal wounds (Jinchuang). Take after soaking in wine. Long-term use tonifies the middle Jiao, benefits Qi, promotes muscle growth, and improves complexion (from *Bencao Jing Shu*). Crush and take the juice to stop epistaxis. Burn to ash, mix with oil, and apply to treat scalds and burns (Li Shizhen).
(Recorded in the Lower Category of *Bencao Jing Shu* / *Shennong's Classic of Materia Medica by Various Authors*)
[Names] Wayi (from *Bencao Gangmu* / *Compendium of Materia Medica*), Watai (from *Jiayou Bencao* / *Jiayou Pharmacopoeia), Waxian (from *Bencao Gangmu* / *Compendium of Materia Medica*), Boxie.
[Collection and Explanation] *Bencao Jing Shu* states: Wuyou grows in the shaded areas of roofs. Harvest in August and September.
Tao Hongjing stated: This is the green moss growing on the roofs of old tiled houses. Peel it off for use.
Li Shizhen stated: The variety that grows several inches long is called Wasong (Dendrobium nobile / Roof Pine).
[Flavor and Properties] Sweet, cold, non-toxic.
[Therapeutic Indications] Floating heat in the skin, alternating chills and fever, promotes the Qi mechanism of the small intestine and bladder (from *Bencao Jing Shu*). Stops Xiao Ke (Wasting-Thirst syndrome) (Xu Zhicai). Pediatric epilepsy with heat, irritability and chest oppression due to seasonal epidemics (from *Kaibao Bencao*). Decoct water, add salt, and gargle to treat gum swelling and exposure caused by heat toxicity. Grind into powder, mix with fresh cold water, and take 2 qian to stop epistaxis (Li Shizhen).
[Innovation and Clarification] Li Shizhen stated: The indications recorded in *Bencao Jing Shu* are identical to those for Wujiu in *Shennong Bencao Jing* (*Classic of Divine Husbandman’s Materia Medica*), suggesting they belong to the same category, with similar properties and flavors not being far apart.
[Attached Formulas] One new formula.
Dog bite: Scrape green moss from old roof tiles and apply directly to the wound to stop bleeding immediately (from *Jingyan Fang* / *Experienced Prescriptions*).