生山溪涧滨隰地上，叶五瓣，附茎而生，根如野狼毒，皮有绉旋纹，与海螺相似，而生于
山，
故名。虽生溪畔，性却喜燥，枝叶繁弱，可以入盆玩。 百草镜云∶生山土，二月采，绝似
野狼毒，惟皮疙瘩，掏破有白浆为异。
其叶四瓣，枝梗蔓延，秋后结子如算盘珠，旁有四叶承之。
治肿毒瘰 ，取汁和酒服。渣敷患处。
汪连仕云∶苗蔓生，根如萝卜，味多臭，治杨梅恶疮神效。 王安采药方山海螺，一名
白河车，加紫河车、红白石膏，名四圣散。治肠痈便毒，脏毒乳痈疽皆效。
张琰种痘新书云∶水杨柳仍草本，生溪涧水旁，叶如柳，其茎春时青，至夏末秋初则赤
矣。
条条直上，不分枝桠，至秋略含赤花。凡痘焦紫干枯者，以此洗之，立见光亮，浆水即行，
其效如神。已洗之后，若往视之，则已洗未洗之处，其明润焦暗，形色判然。取水行浆之效
，孰有速于此者。但须用巾蘸其药水，频频与拭，必水足而后已也。若秋冬叶落，取根用之
。濒湖纲目木部有水杨，亦主痘毒。引魏直爱心鉴浴痘法，但所载形状，与此全别。惟于
集解下注有赤杨，与张琰所说，不甚相远，而又无主治，故为补之。
性微寒，味缺。凉血解毒，痘疮焦黑，浴之立起。
治跌打损伤， 瘟 疫，解暑郁恶毒。
治痘∶水杨柳汤。张琰治痘红紫干燥不起浆，有水杨柳汤。云古方所载∶是木细叶红梗，
枝
上有圆果，果有白须散出，此等俗呼水杨梅，以其果似杨梅也。余未试用，余常用者，乃是
草生水边，叶如柳叶，其梗至秋则红赤，无果结。此草冬用枝梗及根，春夏秋用枝叶，凡痘
红紫干枯不起水者，内服活血解毒之剂。外用此煎水拭头面，连拭数次，立见光润，即具行
浆之势，所未洗者，其色不变。
手足拘挛 费建中救偏琐言用草本水杨柳酒煎服，甚验。
痔漏洗方∶传信方∶水杨柳根煎汤洗，俟虫出愈。
膀胱落下∶刘羽仪验方∶此名茄病，其色或紫者可治，白者不可治。黄连一钱，狗脊、
水杨
柳根、五倍子、鱼腥草四味，多寡不拘，枯矾钱许，共为末，煎汤先熏后洗，乘热时轻轻托
进，睡卧一二日即愈。再服调理药。
毛世洪经验集∶扦扦活，即水杨柳。其根可治杨梅结毒。
生长在山间溪涧岸边和低湿之地，叶子五瓣，贴着茎生长，根部像野狼毒，表皮有螺旋状的皱纹，与海螺相似，但生长在山里，所以得名。虽然生长在水边，但性质却喜欢干燥，枝叶繁茂柔弱，可以种在盆里观赏。《百草镜》记载：生长在山地土壤中，二月采收，外形极像野狼毒，只有表皮有疙瘩，掐破后有白色浆液作为区别。它的叶子四瓣，枝梗蔓延，秋后结子像算盘珠，旁边有四片叶子承托着。治疗肿毒瘰疬，取汁液和酒服用。药渣敷在患处。汪连仕说：苗蔓生，根像萝卜，味道多臭，治疗杨梅疮恶疮非常有效。王安采药方中的山海螺，一名白河车，加上紫河车、红白石膏，名叫四圣散。治疗肠痈便毒、脏毒乳痈疽都有效。张琰《种痘新书》记载：水杨柳仍是草本植物，生长在溪涧水旁，叶子像柳叶，茎在春天是青色，到夏末秋初变成红色。条条直上，不分枝丫，到秋天略带红花。凡是痘疮焦紫干枯的，用此水洗，立刻见光亮，浆水即行，其效如神。已洗之后，若去查看，已洗和未洗之处，明润与焦暗，形色截然不同。取水行浆的效果，有谁比这更快的？但必须用毛巾蘸药水，频繁擦拭，直到水分充足才停止。如果秋冬叶落，取根使用。李时珍《本草纲目》木部有水杨，也主治痘毒。引用魏直《爱心鉴》浴痘法，但所载形状与此完全不同。只在集解下注有赤杨，与张琰所说，不太相远，而又无主治，所以补录于此。性微寒，味缺。凉血解毒，痘疮焦黑，洗浴后立即起效。治疗跌打损伤、瘟疫、解暑郁恶毒。治痘：水杨柳汤。张琰治疗痘红紫干燥不起浆，用水杨柳汤。说古方记载：是木本细叶红梗，枝上有圆果，果有白须散出，这种俗呼水杨梅，因为果实像杨梅。我未试用，我常用的，是草生水边，叶如柳叶，其梗到秋天则红赤，无果结。此草冬用枝梗及根，春夏秋用枝叶，凡痘红紫干枯不起水的，内服活血解毒之剂。外用此煎水拭头面，连拭数次，立刻见光润，即具行浆之势，未洗者，其色不变。手足拘挛费建中《救偏琐言》用草本水杨柳酒煎服，很有效。痔漏洗方：传信方：水杨柳根煎汤洗，等虫出来就好了。膀胱落下：刘羽仪验方：此名茄病，颜色或紫的可治，白的不可治。黄连一钱，狗脊、水杨柳根、五倍子、鱼腥草四味，多少不拘，枯矾约一钱，共为末，煎汤先熏后洗，趁热时轻轻托进，睡卧一二日即愈。再服调理药。毛世洪经验集：扦扦活，即水杨柳。其根可治杨梅结毒。
It grows on the banks of mountain streams and in low-lying damp areas. The leaves have five lobes, growing attached to the stem. The root resembles *Radix Stellerae* (Yelangdu, 野狼毒), with a skin featuring spiral wrinkles. It is similar to a sea conch but grows in mountains, hence its name. Although it grows near streams, its nature prefers dryness; its branches and leaves are lush yet delicate, making it suitable for potted ornamental use. *Baicao Jing* records: Grows in mountain soil, harvested in February. It closely resembles *Radix Stellerae*, distinguished only by bumpy skin that exudes white latex when broken. Its leaves have four lobes, with creeping stems. After autumn, it bears seeds resembling abacus beads, supported by four surrounding leaves. To treat swelling, toxic sores, and scrofula, take the juice mixed with wine. Apply the dregs to the affected area. Wang Lianshi states: The seedlings creep, roots resemble radishes, with a foul odor. It is highly effective in treating severe syphilitic ulcers. In Wang An’s herbal prescription, Shanhai Luo, also known as Baiheche, combined with Ziheche (Placenta Humana) and red/white Shigao (Gypsum Fibrosum), forms the formula Sisheng San. It is effective for intestinal abscesses, perianal abscesses, visceral toxins, mastitis, and carbuncles. Zhang Yan’s *Zhongdou Xinshu* records: Shuiyangliu remains a herbaceous plant, growing beside stream beds. Leaves resemble willow; stems are green in spring, turning red by late summer and early autumn. They grow straight upward without branching, bearing faint red flowers in autumn. For pustules that are scorched, purple, dry, and shriveled, washing with this water makes them immediately bright and promotes fluid discharge, with miraculous efficacy. Upon inspection after washing, the contrast between washed and unwashed areas is starkly clear in terms of brightness and color. No method accelerates fluid discharge more quickly than this. However, one must frequently wipe with a towel soaked in the medicinal water until sufficient moisture is achieved. If leaves fall in winter and autumn, use the roots. Li Shizhen’s *Bencao Gangmu* under the Wood section mentions Shuiyang, which also treats smallpox toxins. Citing Wei Zhi’s *Aixin Jian* bath method for smallpox, the described morphology differs completely from this. Only the annotation for Chi Yang (Red Poplar) in the Collected Explanations is somewhat close to Zhang Yan’s description, though lacking therapeutic indications, thus it is supplemented here. Nature slightly cold, taste undefined. Cools blood and detoxifies; bathing with it for scorched black smallpox lesions yields immediate results. Treats traumatic injuries, plague, and resolves summer-heat stagnation and malignant toxins. Treatment for smallpox: Shuiyangliu Decoction. Zhang Yan used Shuiyangliu Decoction for smallpox presenting as red-purple, dry, and failing to fill with pus. He noted ancient prescriptions describe a woody plant with fine leaves, red stems, round fruits on branches, and white floss emerging from the fruits. This is commonly called Shuiyangmei due to fruit resemblance to bayberry. I have not tested it. My commonly used variety is a herb growing by water, with willow-like leaves and reddish stems in autumn, bearing no fruit. In winter, use stems and roots; in spring, summer, and autumn, use branches and leaves. For smallpox that is red-purple, dry, and fails to fill with fluid, internally administer blood-invigorating and detoxifying agents. Externally, decoct this herb to wash the head and face repeatedly. Immediate brightness and smoothness appear, promoting pus formation, while unwashed areas remain unchanged. Fe Jianzhong’s *Jiu Pian Suoyan* uses herbaceous Shuiyangliu decocted in wine for hand and foot contracture, proving very effective. Prescription for hemorrhoids and fistulas (*Chuanxin Fang*): Decoct Shuiyangliu roots for washing; cure occurs when parasites exit. Prolapsed bladder: Liu Yuyi’s verified prescription: Also known as Qiebing. Purple-colored cases are treatable; white ones are not. Combine Huanglian (Coptidis Rhizoma) 1 qian, Gouji (Cibotii Rhizoma), Shuiyangliu roots, Wubeizi (Galla Chinensis), and Yuxingcao (Houttuyniae Herba) in unspecified proportions, plus roughly 1 qian of Kunfan (Alumen). Grind into powder, decoct in water. Fumigate first, then wash. While warm, gently push the prolapse back in. Rest for one to two days for recovery. Follow with regulatory herbs. Mao Shihong’s *Jingyan Ji*: Qianqianhuo is synonymous with Shuiyangliu. Its roots treat syphilitic chancres.