夜香牛，中药名。为菊科斑鸠属植物夜香牛Vernonia cinerea（L.）Less.的全草。具有疏风散热，凉血解毒，安神的功效。主治感冒发热，咳嗽，痢疾，黄疸型肝炎，神经衰弱；外用治痈疖肿毒，蛇咬伤。
Ye-xiang-niu, name of Chinese Medicinal Material. It refers to the whole plant of Vernonia cinerea (L.) Less., a plant of the Asteraceae family. It has the effects of dispersing wind and heat, cooling blood and detoxification, and calming the mind. It is used to treat fever, cough, dysentery, jaundice hepatitis, and neurasthenia. Externally, it is used to treat carbuncles, abscesses, swelling, and snake bites.

功效作用 功能
The efficacy and functions.

疏风散热，凉血解毒，安神。主治
Dispersing wind, clearing heat, cooling blood, detoxifying, and calming the mind. Used to treat...

感冒发热，咳嗽，痢疾，黄疸型肝炎，神经衰弱；外用治痈疖肿毒，蛇咬伤。用法用量
The common cold with fever, cough, diarrhea, jaundice hepatitis, and neurasthenia; externally used for treating carbuncle, abscess, swelling, and snake bites. Dosage and administration.

用量15-30g（鲜草30-60g）；外用适量，鲜品捣烂敷患处。加工炮制 采收加工
Dosage: 15-30g (30-60g for fresh herb); for external use, apply an appropriate amount of fresh herb paste to the affected area. Processing: harvested and processed.

夏秋采收，洗净鲜用或晒干。植物学信息 植物种属
Summer and autumn are the harvesting seasons, when the plants should be washed and used fresh or dried in the sun. Botanical information: plant species.

菊科斑鸠属植物夜香牛。形态特征
The night-blooming jasmine, a plant of the Asteraceae family and the genus Tagetes. Morphological characteristics

一年生或多年生草本，高20-100cm。根垂直，多少木质，分枝，具纤维状根。茎直立，通常上部分枝，或稀自基部分枝而呈铺散状，具条纹，被灰色贴生短柔毛，具腺。下部和中部叶具柄，菱状卵形，菱状长圆形或卵形，长3-6.5cm，宽1.5-3cm，顶端尖或稍钝，基部楔状狭成具翅的柄，边缘有具小尖的疏锯齿，或波状，侧脉3-4对，上面绿色，被疏短毛，下面特别沿脉被灰白色或淡黄色短柔毛，两面均有腺点；叶柄长10-20mm；上部叶渐尖，狭长圆状披针形或线形，具短柄或近无柄；头状花序多数，或稀少数，径6-8mm，具19-23个花，在茎枝端排列成伞房状圆锥花序；花序梗细长5-15mm，具线形小苞片或无苞片，被密短柔毛；总苞钟状，长4-5mm，宽6-8mm；总苞片4层，绿色或有时变紫色，背面被短柔毛和腺，外层线形，长1.5-2mm，顶端渐尖，中层线形，内层线状披针形，顶端刺状尖，具1条脉或有时上部具多少明显3脉；花托平，具边缘具细齿的窝孔；花淡红紫色，花冠管状，长5-6mm被疏短微毛，具腺，上部稍扩大，裂片线状披针形，顶端外面被短微毛及腺；瘦果圆柱形，长约2mm，顶端截形，基部缩小，被密短毛和腺点；冠毛白色，2层，外层多数而短，内层近等长，糙毛状，长4-5mm。花期全年。分布区域
It is an annual or perennial herb, 20-100cm tall. The root is vertical, somewhat woody, branched, and fibrous. The stem is erect, usually branching in the upper part, or sparsely branching from the base, with stripes, covered with gray appressed short soft hairs, and glands. The lower and middle leaves have petioles, rhombic-ovate, rhombic-elliptic or ovate, 3-6.5cm long, 1.5-3cm wide, apex acute or slightly obtuse, base cuneate-narrowed into winged petioles, margin with small acute sparse serrations, or undulate, 3-4 pairs of lateral veins, green on the upper surface, sparsely short hairy, and particularly along the veins on the lower surface covered with gray-white or pale yellow short soft hairs, with glands on both sides; petiole 10-20mm long; upper leaves gradually pointed, narrowly lanceolate or linear, with short or nearly absent petioles; capitulum inflorescences numerous, or rarely few, 6-8mm in diameter, with 19-23 flowers, arranged in umbel-like conical inflorescences at the ends of the stems; peduncle slender, 5-15mm long, with linear bracts or without bracts, covered with dense short soft hairs; involucre campanulate, 4-5mm long, 6-8mm wide; involucral bracts 4 layers, green or sometimes purple, with short soft hairs and glands on the back, outer linear, 1.5-2mm long, gradually pointed at the apex, middle linear, inner linear-lanceolate, acutely pointed at the apex, with 1 vein or sometimes with several distinct 3 veins in the upper part; receptacle flat, with margin and fine-toothed pits; flowers pale purple, corolla tubular, 5-6mm long, sparsely short hairy, with glands, slightly enlarged at the upper part, lobes linear-lanceolate, with short hairs and glands on the outside at the apex; achene cylindrical, about 2mm long, truncate at the apex, narrowed at the base, covered with dense short hairs and glandular dots; pappus white, 2 layers, mostly short in the outer layer, nearly equal in length in the inner layer, rough-hairy, 4-5mm long. It flowers throughout the year. Distribution area.

广泛分布于浙江、江西、福建、台湾、湖北、湖南、广东、广西、云南和四川等省区。印度至中南半岛、日本、印度尼西亚、非洲也有。生长环境
Widely distributed in the provinces and regions of Zhejiang, Jiangxi, Fujian, Taiwan, Hubei, Hunan, Guangdong, Guangxi, Yunnan, and Sichuan. It is also found in India, the South Central Peninsula, Japan, Indonesia, and Africa. Habitat.

常见于山坡旷野、荒地、田边、路旁。
Commonly found on mountain slopes, open fields, wastelands, field edges, and roadsides.