山黄麻叶，中药名。为榆科山黄麻属植物山黄麻Tremaorientalis（L.）Bl.的叶。植物山黄麻，分布于我国华南、西南及福建、台湾、西藏等地。具有止血之功效。主治外伤出血。
Shan-huang-ma-ye, name of Chinese Medicinal Material. It refers to the leaves of Trema orientalis (L.) Bl., a plant of the family Ulmaceae. The plant is distributed in southern and southwestern China, as well as in Fujian, Taiwan, and Tibet. It is effective in stopping bleeding and is mainly used to treat external injuries with bleeding.

功效作用 功能
The efficacy and functions.

止血。主治
Hemostasis. Main treatment

外伤出血。用法用量
Traumatic bleeding. Dosage and administration.

外用：适量，鲜品捣敷；或研末敷。相关论述
External use: Apply an appropriate amount of fresh herbs by pounding and applying, or by applying a powdered paste. Relevant discussions.

《广西本草选编》：“止血。主治外伤出血。”药材鉴别 药材性状
"Guangxi Materia Medica Compilation": "Hemostasis. Used to treat external bleeding." Identification of medicinal materials and their properties.

叶多皱缩，展平后完整者呈卵形、卵状披针形或披针形，长6-18cm，先端长渐尖，基部心形或近截形，常稍斜，基部3出脉明显；边缘有小锯齿，上面有短硬毛而粗糙，下面密被淡黄色柔毛。质脆。气微，味涩。植物学信息 植物种属
The leaves are wrinkled and shriveled, and when flattened, they are oval, ovate-lanceolate, or lanceolate, with a length of 6-18cm. The apex is gradually pointed, the base is heart-shaped or nearly truncate, often slightly oblique, and the three main veins at the base are obvious. The edges have small serrations, and the upper surface is rough with short stiff hairs, while the lower surface is densely covered with light yellow soft hairs. The texture is brittle. It has a slight aroma and astringent taste. This information pertains to the botanical characteristics of the plant species.

榆科山黄麻属植物山黄麻。形态特征
The plant in the genus of Boehmeria, Boehmeria nivea, is a member of the Urticaceae family. It has the following morphological characteristics:

山黄麻，别名山麻木、九层麻《广西本草选编》，麻桐树、山角麻、山王麻《全国中草药汇编》，麻木、下格木《广西药用植物名录》。小乔木，高4-8米。当年生枝条密被白色伸展的曲柔毛。叶互生；叶柄长4-12毫米，密被白色柔毛；叶片纸质，卵状披针形或披针形，长6-18厘米，宽3-8厘米，先端长而渐尖，基部心形或近截平，常稍斜，上面有短硬毛而粗糙，下面密被银灰色丝质柔毛或曲柔毛，边缘有细锯齿；基出3脉，侧脉5-6对，网脉明显。花单性，雌雄异株，聚伞花序稠密，稍长于叶柄；花萼5深裂，背面被毛；雄蕊5，与萼片对生；雄花长约l毫米，雌花长约2毫米；子房1室，柱头2，被毛。核果卵球形，果柄长2-3毫米，被毛。花期5-6月，果期6-8月。生长环境
The herb is known as Shan Huang Ma, also called Shan Ma Mu, Jiu Ceng Ma in "Guangxi Herbal Compilation", Ma Tong Shu, Shan Jiao Ma, Shan Wang Ma in "National Compilation of Chinese Herbal Medicines", and Ma Mu, Xia Ge Mu in "Guangxi Medicinal Plant Catalog". It is a small tree, 4-8 meters tall. The young branches are densely covered with white, spreading, and soft hairs. The leaves are opposite; petioles are 4-12 millimeters long, densely covered with white soft hairs; leaf blades are papery, ovate-lanceolate or lanceolate, 6-18 centimeters long, 3-8 centimeters wide, with a long and gradually pointed apex, a heart-shaped or nearly truncate base, often slightly oblique, with short, stiff hairs and rough upper surface, densely covered with silvery-gray silky hairs or spreading soft hairs on the lower surface, and finely serrated margins; 3 primary veins, 5-6 pairs of lateral veins, and obvious reticulate veins. The flowers are unisexual, with separate male and female plants, in dense umbels slightly longer than the petioles; the calyx is deeply 5-lobed, and hairy on the back; stamens are 5, opposite the sepals; male flowers are about 1 millimeter long, female flowers are about 2 millimeters long; ovary is 1-celled, with 2 styles, and hairy. The fruit is ovoid, with a 2-3 millimeter long pedicel, and hairy. It flowers from May to June and fruits from June to August. Its growing environment is...

生于海拔800米左右的疏林中。
Born in sparse forests at an altitude of around 800 meters.