地黄叶，中药名。为玄参科植物地黄Rehmanniaglutinosa(Gaetn.)Libosch.的叶。分布于河北、山西、内蒙古、辽宁、江苏、浙江、安徽、山东、河南、湖北、湖南、四川、陕西等地。具有解毒疗疮之功效。常用于恶疮，手、足癣。
Di-huang-ye, name of Chinese Medicinal Material. the leaves of Rehmannia glutinosa (Gaetn.) Libosch., a plant of the Scrophulariaceae family. It is distributed in Hebei, Shanxi, Inner Mongolia, Liaoning, Jiangsu, Zhejiang, Anhui, Shandong, Henan, Hubei, Hunan, Sichuan, Shaanxi, and other places. It has the effect of detoxification and healing of sores, and is commonly used for malignant ulcers, and hand and foot ringworm.

功效作用 功能
The efficacy and functions.

解毒疗疮。主治
Detoxification and wound healing.主治

恶疮，手、足癣。用法用量
Ulcer, hand and foot eczema. Dosage and usage.

外用：30-60g，捣汁涂或揉搓。相关论述
External use: 30-60g, grind into juice and apply or rub. Relevant discussion.

《千金方》：“治恶疮似癞者：地黄叶捣烂日涂，盐汤先洗。”临床应用 相关配伍
"Qian Jin Fang": "To treat malignant ulcers resembling leprosy: mash fresh leaves of dihuang (Rehmannia glutinosa) and apply, wash with salt water first." Clinical application and related compatibility.

治恶疮似癞者：地黄叶捣烂日涂，盐汤先洗。（《千金方》）植物学信息 植物种属
Treatment for ulcerative sores resembling leprosy: Mash the leaves of Rehmannia glutinosa and apply them topically, then wash with salt water. (From "Qian Jin Fang") Botanical information: Rehmannia glutinosa

玄参科植物地黄。形态特征
Rehmannia, a plant in the Scrophulariaceae family, has the following morphological characteristics.

多年生草本，高10-40cm。全株被灰白色长柔毛及腺毛。根肥厚，肉质，呈块状，圆柱形或纺锤形。茎直立，单一或基部分生数枝。基生叶成丛，叶片倒卵状披针形，长3-10cm，宽1.5-4cm，先端钝，基部渐窄，下延成长叶柄，叶面多皱，边缘有不整齐锯齿；茎生叶较小。花茎直立，被毛，于茎上部呈总状花序；苞片叶状，发达或退化；花萼钟状，先端5裂，裂片三角形，被多细胞长柔毛和白色长毛，具脉10条；花冠宽筒状，稍弯曲，长3-4cm，外面暗紫色，里面杂以黄色，有明显紫纹，先端5浅裂，略呈二唇形；雄蕊4，二强，花药基部叉开；子房上位，卵形，2室，花后变1室，花柱1，柱头膨大。蒴果卵形或长卵形，先端尖，有宿存花柱，外为宿存花萼所包。种子多数。花期4-5月，果期5-6月。分布区域
Perennial herb, 10-40cm tall. The entire plant is covered with gray-white long soft hairs and glandular hairs. The root is thick, fleshy, and shaped like a block, cylinder, or spindle. The stem is erect, single or with several branches at the base. The basal leaves form a cluster, with leaf blades inversely ovate-lanceolate, 3-10cm long, 1.5-4cm wide, blunt at the apex, gradually narrowing at the base, extending downward into a long petiole, with wrinkled surfaces and irregular serrations along the edges; stem leaves are smaller. The flower stem is erect, hairy, with a terminal raceme at the upper part of the stem; bracts are leaf-like, well-developed or degenerate; the calyx is bell-shaped, with 5 triangular lobes at the apex, covered with numerous multicellular long soft hairs and white long hairs, with 10 veins; the corolla is broadly tubular, slightly curved, 3-4cm long, dark purple on the outside, mixed with yellow on the inside, with distinct purple veins, and 5 shallow lobes at the apex, slightly bilabiate; 4 stamens, 2 of which are stronger, with the anthers splitting at the base; the ovary is superior, ovoid, 2-loculed, becoming 1-loculed after flowering, with a swollen style head. The capsule is ovoid or elongated ovoid, with a pointed apex and persistent floral remnants, enclosed by persistent calyx. Numerous seeds. Flowering period is April to May, and fruiting period is May to June. Distributed in [specific region].

分布于河北、山西、内蒙古、辽宁、江苏、浙江、安徽、山东、河南、湖北、湖南、四川、陕西等地。生长环境
Distributed in Hebei, Shanxi, Inner Mongolia, Liaoning, Jiangsu, Zhejiang, Anhui, Shandong, Henan, Hubei, Hunan, Sichuan, Shaanxi and other regions. Growing environment.

主要为栽培，亦野生于海拔50-1100m的山坡及路旁荒地等处。
Mainly cultivated, also found in the wild on slopes and wastelands along roads at altitudes of 50-1100 meters.