白背叶，中药名。为大戟科野桐属植物白背叶Mallotusapelta（Lour.）Muell.-Arg.的根或叶。分布于云南、广西、湖南、江西、福建、广东、海南等地。根具有柔肝活血，健脾化湿，收敛固脱之功效，常用于慢性肝炎，肝脾肿大，子宫脱垂，脱肛，白带，妊娠水肿。叶具有消炎止血之功效，常用于中耳炎，疖肿，跌打损伤，外伤出血。
Bai-bei-ye, name of Chinese Medicinal Material. The root or leaves of Mallotusapelta (Lour.) Muell.-Arg., a plant in the Euphorbiaceae family. It is distributed in Yunnan, Guangxi, Hunan, Jiangxi, Fujian, Guangdong, Hainan, and other places. The root is known for its effects of nourishing the liver, promoting blood circulation, invigorating the spleen, eliminating dampness, and astringing to stop leakage. It is commonly used for chronic hepatitis, hepatosplenomegaly, uterine prolapse, hemorrhoids, leukorrhea, and pregnancy edema. The leaves are known for their anti-inflammatory and hemostatic effects, and are commonly used for otitis media, abscesses, contusions, and external bleeding.

功效作用 功能
Efficacy and Functions

根：柔肝活血，健脾化湿，收敛固脱。叶：消炎止血。主治
Root: Soften the liver and activate blood circulation, strengthen the spleen and transform dampness, astringe and stop leakage. Leaf: Anti-inflammatory and hemostatic. Used to treat...

根：用于慢性肝炎，肝脾肿大，子宫脱垂，脱肛，白带，妊娠水肿。叶：用于中耳炎，疖肿，跌打损伤，外伤出血。用法用量
Root: Used for chronic hepatitis, hepatosplenomegaly, uterine prolapse, hemorrhoids, abnormal vaginal discharge, and pregnancy edema. Leaf: Used for otitis media, abscesses, bruises, and external bleeding due to trauma. Dosage and administration.

根15-30g；叶外用适量，鲜叶捣烂敷或干叶研粉敷患处。词条图册更多图册加工炮制 炮制方法
Root 15-30g; for external use, use an appropriate amount of leaves, crush fresh leaves for application or grind dried leaves into powder for application on the affected area. More processing methods for the entry picture album.

根，洗净，切片，晒干。叶多鲜用，或晒干研粉。药材鉴别 鉴别
Wash the roots, slice them, and dry them in the sun. The fresh leaves are often used, or dried and ground into powder. Identification of medicinal materials.

~叶：本品皱缩，边缘多内卷，完整叶片展平后呈圆卵形，长7-14cm，宽4-14cm，上表面绿色或黄绿色，下表面灰白色或白色，顶端渐尖，基部略呈心形或近平截，具2腺点，全缘或顶部微3裂，有钝齿，上表面无毛，下表面被星状毛；基出脉3条，叶脉于下表面隆起。叶基具2斑状腺体。叶柄长5-15cm，质脆。气微香，味微苦、辛。~药材性状
~Leaf: This herb is wrinkled, with edges often rolled inward. The complete leaf, when spread out, is oval or elliptic, 7-14cm long and 4-14cm wide. The upper surface is green or yellow-green, while the lower surface is grey-white or white. The apex is gradually pointed, the base slightly heart-shaped or nearly flat, with 2 glandular dots. The margin is entire or slightly 3-lobed at the top, with blunt teeth. The upper surface is hairless, while the lower surface is covered with stellate hairs. There are 3 primary veins originating from the base, and the veins are raised on the lower surface. The leaf base has 2 glandular spots. The leaf stalk is 5-15cm long and brittle. It has a slightly fragrant smell, with a slightly bitter and pungent taste.~Characteristics of Medicinal Materials

叶：本品皱缩，边缘多内卷，完整叶片展平后呈圆卵形，长7-14cm，宽4-14cm，上表面绿色或黄绿色，下表面灰白色或白色，顶端渐尖，基部略呈心形或近平截，具2腺点，全缘或顶部微3裂，有钝齿，上表面无毛，下表面被星状毛；基出脉3条，叶脉于下表面隆起。叶基具2斑状腺体。叶柄长5-15cm，质脆。气微香，味微苦、辛。植物学信息 植物种属
The leaves of this plant are wrinkled, with many inwardly rolled edges. When the complete leaf is flattened, it is oval or ovate, 7-14cm long and 4-14cm wide. The upper surface is green or yellow-green, while the lower surface is grey-white or white. The apex is gradually pointed, the base slightly heart-shaped or nearly flat, with 2 glandular dots. The margin is entire or slightly 3-lobed at the top, with blunt teeth. The upper surface is hairless, while the lower surface is covered with stellate hairs. There are 3 primary veins originating from the base, and the veins are raised on the lower surface. The leaf base has 2 patchy glandular bodies. The leaf stalk is 5-15cm long and brittle. The plant has a slightly fragrant smell, with a slightly bitter and pungent taste. Botanical information about the plant species.

大戟科野桐属植物白背叶。形态特征
Euphorbia heterophylla, a plant belonging to the Euphorbiaceae family. Morphological characteristics.

灌木或小乔木，高1-3(-4)米；小枝、叶柄和花序均密被淡黄色星状柔毛和散生橙黄色颗粒状腺体。叶互生，卵形或阔卵形，稀心形，长和宽均6-16(-25)厘米，顶端急尖或渐尖，基部截平或稍心形，边缘具疏齿，上面干后黄绿色或暗绿色，无毛或被疏毛，下面被灰白色星状绒毛，散生橙黄色颗粒状腺体；基出脉5条，最下一对常不明显，侧脉6-7对；基部近叶柄处有褐色斑状腺体2个；叶柄长5-15厘米。花雌雄异株，雄花序为开展的圆锥花序或穗状，长15-30厘米，苞片卵形，长约1.5毫米，雄花多朵簇生于苞腋；雄花：花梗长1-2.5毫米；花蕾卵形或球形，长约2.5毫米，花萼裂片4，卵形或卵状三角形，长约3毫米，外面密生淡黄色星状毛，内面散生颗粒状腺体；雄蕊50-75枚，长约3毫米；雌花序穗状，长15-30厘米，稀有分枝，花序梗长5-15厘米，苞片近三角形，长约2毫米；雌花：花梗极短；花萼裂片3-5枚，卵形或近三角形，长2.5-3毫米，外面密生灰白色星状毛和颗粒状腺体；花柱3-4枚，长约3毫米，基部合生，柱头密生羽毛状突起。蒴果近球形，密生被灰白色星状毛的软刺，软刺线形，黄褐色或浅黄色，长5-10毫米；种子近球形，直径约3.5毫米，褐色或黑色，具皱纹。花期6-9月，果期8-11月。分布区域
Shrubs or small trees, 1-3(-4) meters tall; twigs, petioles, and inflorescences densely covered with pale yellow stellate pubescence and scattered orange-yellow glandular granules. Leaves alternate, ovate or broadly ovate, rarely cordate, 6-16(-25) cm long and wide, apex acute or acuminate, base truncate or slightly cordate, margin sparsely serrate, upper surface drying yellow-green or dark green, glabrous or sparsely hairy, lower surface with gray-white stellate pubescence, scattered orange-yellow glandular granules; primary veins 5, lower pair often inconspicuous, lateral veins 6-7 pairs; 2 brown patchy glands near the leaf base; petiole 5-15 cm long. Plants dioecious, male inflorescences are open cone-shaped or spicate, 15-30 cm long, bracts ovate, about 1.5 mm long, male flowers clustered in the axils of bracts; male flowers: pedicel 1-2.5 mm long; buds ovate or globose, about 2.5 mm long, calyx lobes 4, ovate or ovate-triangular, about 3 mm long, densely covered with pale yellow stellate hairs on the outside, scattered glandular granules on the inside; stamens 50-75, about 3 mm long; female inflorescences spicate, 15-30 cm long, rarely branched, peduncle 5-15 cm long, bracts nearly triangular, about 2 mm long; female flowers: pedicel very short; calyx lobes 3-5, ovate or nearly triangular, 2.5-3 mm long, densely covered with gray-white stellate hairs and glandular granules on the outside; styles 3-4, about 3 mm long, connate at the base, with feathery projections on the stigma. Capsule nearly globose, densely covered with soft spines of gray-white stellate hairs, linear soft spines, yellow-brown or light yellow, 5-10 mm long; seeds nearly globose, about 3.5 mm in diameter, brown or black, wrinkled. Flowering period from June to September, fruiting period from August to November. Distribution area.

产于云南、广西、湖南、江西、福建、广东和海南。分布于越南。生长环境
Originating from Yunnan, Guangxi, Hunan, Jiangxi, Fujian, Guangdong, and Hainan. Also found in Vietnam. Habitat.

生于海拔30-1000米山坡或山谷灌丛中。
Born in shrubs on slopes or valleys at an altitude of 30-1000 meters.