水葱，中药名。为莎草科植物水葱ScirpusvalidusVahl的地上部分。分布几遍全国。具有利水消肿之功效。用于水肿胀满，小便不利。
Shui-cong, name of Chinese Medicinal Material. It refers to the above-ground part of the plant Scirpus validus Vahl, a member of the Cyperaceae family. It is widely distributed throughout the country. Shui-cong has the function of promoting diuresis and reducing swelling, and is used for conditions such as edema and urinary difficulties.

功效作用 功能
Efficacy and Functions

利水消肿。主治
Promote diuresis and reduce swelling. Used to treat...

用于水肿胀满，小便不利。用法用量
Used for edema and difficulty urinating. Dosage and administration.

内服：煎汤，5-10g。相关论述
Internal administration: Decoction, 5-10g. Relevant discussion.

《全国中草药汇编》：“主治水肿胀满，小便不利。”临床应用 相关配伍
"National Compilation of Chinese Herbal Medicines": "Mainly used for treating edema and fullness, as well as difficulty urinating." Clinical applications and relevant compatibility.

治小便不利：水葱12g，蟋蟀2个（焙干研末）。煎汤服。（《宁夏中草药手册》）加工炮制 采收加工
Treatment for difficult urination: 12g of water onion and 2 crickets (dried and ground). Decoct and take orally. (From "Ningxia Chinese Herbal Manual") Processing and preparation: Harvest and process.

夏、秋季采收，洗净，切段，晒干。炮制方法
Harvest in summer or autumn, wash, cut into sections, and sun-dry. Processing method.

取原药材，除去杂质，洗净，闷润，切中段。干燥。筛去灰屑。药材鉴别 药材性状
Collect the original medicinal herbs, remove impurities, wash thoroughly, soak, and cut into sections. Dry. Remove ash and debris by sieving. Identify the medicinal herbs and their characteristics.

1、药材性状干燥茎呈扁圆柱形或扁平长条形，长60-100cm，直径4-9cm，或更粗。表面淡黄棕色或枯绿色，有光泽，具纵沟纹，节少，稍隆起，可见膜质叶鞘。质轻而韧，不易折断，切断面类白色，有许多细孔，似海绵状。有的可见淡黄色的花序。气微，味淡。2、饮片性状呈不规则的段。茎圆形或扁圆形。外表面灰绿色或黄绿色，有光泽，具纵直纹理，隐约可见横环纹；节少，稍隆起。质轻而韧，不易折断，切面类白色，有众多小孔似海绵状。气微，味淡。植物学信息 植物种属

1. The dried stems of the medicinal material are flat cylindrical or flat elongated, measuring 60-100cm in length and 4-9cm in diameter, or even thicker. The surface is light yellow-brown or pale green, glossy, with longitudinal grooves, few nodes, slightly raised, and membranous leaf sheaths may be visible. The texture is light and tough, not easily broken, the cut surface is whitish with many fine pores, resembling a sponge. Some may have pale yellow inflorescences. It has a mild aroma and a bland taste.2. The sliced pieces are irregular segments. The stems are round or flat cylindrical. The outer surface is grayish-green or yellowish-green, glossy, with longitudinal veins, faintly visible transverse rings; few nodes, slightly raised. The texture is light and tough, not easily broken, the cut surface is whitish with numerous small pores resembling a sponge. It has a mild aroma and a bland taste. Botanical information: Plant species.

莎草科植物水葱。形态特征
Water onion, a plant in the Liliaceae family. Morphological characteristics.

水葱又名：水葱藨草。匍匐根状茎粗壮，具许多须根。秆高大，圆柱状，高1-2米，平滑，基部具3-4个叶鞘，鞘长可达38厘米，管状，膜质，最上面一个叶鞘具叶片。叶片线形，长1.511厘米。苞片1枚，为秆的延长，直立，钻状，常短于花序，极少数稍长于花序；长侧枝聚繖花序简单或复出，假侧生，具4-13或更多个辐射枝；辐射枝长可达5厘米，一面凸，一面凹，边缘有锯齿；小穗单生或2-3个簇生于辐射枝顶端，卵形或长圆形，顶端急尖或钝圆，长5-10毫米，宽2-3.5毫米，具多数花；鳞片椭圆形或宽卵形，顶端稍凹，具短尖，膜质，长约3毫米，棕色或紫褐色，有时基部色淡，背面有铁锈色突起小点，脉1条，边缘具缘毛；下位刚毛6条，等长于小坚果，红棕色，有倒刺；雄蕊3，花药线形，药隔突出；花柱中等长，柱头2，罕3，长于花柱。小坚果倒卵形或椭圆形，双凸状，少有三稜形，长约2毫米。花果期6-9月。分布区域
Water onion, also known as water onion grass, has a stout creeping rhizome with many fibrous roots. The stem is tall and cylindrical, reaching 1-2 meters in height, smooth, with 3-4 leaf sheaths at the base, the longest of which can reach 38 centimeters, tubular, membranous, with a leaf blade at the top of one leaf sheath. The leaf blade is linear, 1.5-11 centimeters long. There is one bract, an extension of the stem, upright, awl-shaped, often shorter than the inflorescence, very few slightly longer than the inflorescence; the long lateral branches form simple or compound umbels, pseudo-axillary, with 4-13 or more radiating branches; the radiating branches can reach up to 5 centimeters in length, convex on one side, concave on the other, serrated edges; the spikelet is solitary or clustered in 2-3 at the tip of the radiating branch, ovate or oblong, abruptly acute or obtuse at the tip, 5-10 millimeters long, 2-3.5 millimeters wide, with numerous flowers; the scales are elliptic or broadly ovate, slightly concave at the tip, with short points, membranous, about 3 millimeters long, brown or purplish-brown, sometimes pale at the base, with rust-colored small protrusions on the back, 1 vein, margin with marginal hairs; 6 lower bristles, equal in length to the nutlet, reddish-brown, with spines; 3 stamens, anthers linear, connective prominent; styles of medium length, with 2, rarely 3, stigmas, longer than the style. The nutlet is inverted ovate or elliptic, biconvex, rarely triquetrous, about 2 millimeters long. The flowering and fruiting period is from June to September. Distribution area.

分布几遍全国。生长环境
Distribution throughout the country. Growing environment.

生水边、浅水塘、沼泽地或湿地草丛中。
Near fresh water, shallow ponds, marshes, or wetland grasslands.