百草镜云∶生颓垣墙侧，人家荒圃中尤多，俗呼狗尾草。叶如茅，六月开花，形如狗尾，
采
取花茎下截阴干用。纲目狗尾草下，止载穿疣目，去赤眼恶血，而不言别功用，故为补之。
治疔痈癣∶面上生癣，取草数茎揉软，不时搓之，即愈。
风粟瘾疹∶狗尾草茎刮出瘀血，避风数次，自效。见杭集三方。
羊毛 ∶家宝方∶一名羊毛痧，以狗尾草煎汤内服，外用银针挑破红瘰，用麻线挤出瘰
中白
丝如羊毛状者，即愈，否则胀死。
一名蜈蚣草。山中道旁皆有之，蔓生，两叶相对，青圆似佛耳草，夏开小黄花，每节间
有二
朵，故名。
按∶外科全生云∶此草梗叶长青，经冬不衰，殊不知春生秋死，不衰之说谬矣。
百草镜云∶此草清明时发苗，高尺许，生山隰阴处，叶似鹅肠草，对节，立夏时开小花，
三月采，过时无。王安采药方∶一名地蜈蚣。
黄胆初起，又治脱力虚黄。 百草镜∶用神仙对坐草，三叶白，荷包草，平地木茵陈，各三
钱，水煎，分三服，早中晚下，一服全愈，脱力虚黄五剂。
祝氏效方∶洞天仙草膏用之，又毒蛇咬，捣此草汁饮，以渣罨伤口，立愈。
一切疝气∶刘羽仪验方∶仙人对坐青木香二味，捣汁冲酒服，立效。
治反胃噎膈，水肿臌胀，黄白火疸，疝气阴症伤寒（王安）。
《百草镜》记载：这种植物生长在倒塌的城墙边，在人家荒废的花园中尤其多，俗称狗尾草。叶子像茅草，六月开花，花序形状像狗尾巴，采集时取花茎的下半部分，阴干后使用。《本草纲目》在“狗尾草”条目下，只记载了治疗疣、去除红眼和恶血的功效，而没有提及其他功用，因此对此进行补充。
治疗疔疮、痈肿、癣疾：面部生癣，取几茎草揉软，不时搓擦患处，即可痊愈。
风粟瘾疹（荨麻疹）：将狗尾草茎刮出瘀血，注意避风数次，自然见效。（见《杭集三方》）
羊毛痧：《家宝方》记载：又名羊毛痧，用狗尾草煎汤内服；外用银针挑破红色的瘰疱，用麻线挤出瘰疱中白色的丝状物（形如羊毛），即可痊愈，否则会导致腹胀而死。
消散喉风：《采药志》记载：这是消散喉痈的圣药。
赵学敏按语：这就是翠羽草。应当合并记载。
另一种名为蜈蚣草。山中和道路两旁都有生长，蔓生，两片叶子相对，青色圆形似佛耳草，夏天开小黄花，每节间有两朵，因此得名。
按语：《外科全生集》记载：这种草梗叶常青，经冬不凋谢，殊不知它春生秋死，“不衰”的说法是错误的。
《百草镜》记载：这种草在清明时节发芽，高约一尺，生长在山地低洼潮湿处，叶子像鹅肠草，对节生长，立夏时开小花，三月采收，过了时间就没有了。《王安采药方》记载：又名地蜈蚣。
治疗黄疸初起，又治疗因过度劳累导致的虚黄。《百草镜》记载：用神仙对坐草三钱，荷包草三钱，平地木茵陈三钱，水煎，分三次服用，早晚及中午各服一次，一服即愈；治疗脱力虚黄需服五剂。
《祝氏效方》记载：洞天仙草膏中使用此药；又被毒蛇咬伤时，捣此草取汁饮用，并将药渣敷在伤口上，立即痊愈。
*Baicao Jing* (Mirror of Hundred Herbs) records: It grows beside collapsed walls and is especially abundant in abandoned gardens of households. It is commonly known as Dogtail Grass (Gouwei Cao). The leaves resemble those of cogon grass (Imperata cylindrica). It flowers in the sixth lunar month, with inflorescences shaped like a dog's tail. For use, harvest the lower part of the flowering stem and dry it in the shade. In *Bencao Gangmu* (Compendium of Materia Medica), under the entry for "Dogtail Grass," only its ability to treat warts, remove red eyes, and dispel evil blood is recorded, without mentioning other functions; thus, this supplement is provided.
Treatment for Ding carbuncles, abscesses, and tinea: When tinea appears on the face, take several stems of the herb, rub them until soft, and frequently rub them against the affected area until healed.
Wind millet urticaria (Urticaria): Scrape the stems of Dogtail Grass to extract stasis, avoid wind exposure several times, and it will be effective spontaneously. (See *Hangji Sanfang*).
Wool Moth Sha (Yangmao Sha): *Jiabao Fang* (Family Treasure Formulas) records: Also known as Wool Moth Sha, administer a decoction of Dogtail Grass orally. Externally, use a silver needle to pierce the red nodules, and use hemp thread to squeeze out white filaments resembling wool from within the nodules; this leads to cure. Otherwise, abdominal distension leading to death may occur.
Dispersing Throat Wind: *Caizao Zhi* (Record of Herb Gathering) states: This is the holy medicine for dispersing throat abscesses.
Zhao Xuemin’s note: This is precisely Cuivyu Cao (Emerald Feather Grass). They should be recorded together.
Another name is Centipede Grass (Wugong Cao). It grows along mountain paths and roadsides, creeping with opposite leaves. The leaves are green and round, resembling Foer Cao (Buddha Ear Grass). It blooms with small yellow flowers in summer, with two flowers per node, hence the name.
Note: *Waike Quansheng* (Complete Life of External Medicine) states: The stems and leaves of this herb remain evergreen and do not wither through winter. However, this is incorrect; it sprouts in spring and dies in autumn, so the claim that it does not wither is erroneous.
*Baicao Jing* records: This herb sprouts during Qingming Festival, growing about one chi tall in shady, low-lying areas of mountains. The leaves resemble those of Goose Intestine Grass (Pilea nummulariifolia), growing in opposite pairs. It blooms with small flowers at Lixia (Start of Summer). Harvest in the third lunar month; it is unavailable after this time. *Wang'an Caizao Fang* (Wang'an's Herb Gathering Formulas) records: Also known as Earth Centipede (Di Wugong).
Treats early-stage jaundice, and also treats deficiency-yellow caused by overexertion. *Baicao Jing* records: Use Shenxian Duizuo Cao (Immortal Sitting Opposite Grass) 3 qian, Baohe Cao (Moneybag Grass) 3 qian, Pingdimu Yinchen (Ground-level Wood Mugwort) 3 qian. Decoct in water, divide into three doses, taken at morning, noon, and evening. One dose results in complete cure; five doses are required for deficiency-yellow due to overexertion.
*Zhu Shi Xiao Fang* (Effective Formulas of Mr. Zhu) records: Used in Dongtian Xiancao Gao (Cave Immortal Grass Paste); when bitten by venomous snakes, crush the herb to extract juice for oral administration, and apply the residue to the wound for immediate cure.
All types of hernia: *Liu Yuyi Yan Fang* (Verified Formulas of Liu Yuyi) records: Crush Shenxian Duizuo Cao (Immortal Sitting Opposite Grass) and Qingmuxiang (Blue Sandalwood) to extract juice, mix with wine, and ingest for immediate effect.
Treats regurgitation and dysphagia, edema and ascites, yellow-white fire jaundice, hernia, yin-pattern cold damage (attributed to Wang An).