芒茎，中药名。为禾本科芒属植物芒Miscanthus sinensis Anderss的茎。具有清热利尿，解毒，散血的功效。主治小便不利，虫兽咬伤。
Mang-jing, name of Chinese Medicinal Material. Mang-jing) refers to the stem of the plant Miscanthus sinensis Anderss, a member of the Poaceae family. It is known for its efficacy in clearing heat, promoting urination, detoxification, and dispersing blood stasis. It is commonly used to treat urinary difficulties and bites from insects or animals.

功效作用 Efficacy and Functions

清热利尿，解毒，散血。
Clearing heat, promoting diuresis, detoxifying, and dispersing blood stasis.

主治 Indications

小便不利，虫兽咬伤。
Difficulty urinating, insect or animal bites.

用法用量 Dosage and Administration

内服：煎汤，3-6g。
Internal use: Decoction, 3-6g.

注意事项 Precautions

本品无毒，可煎汤代茶常饮之。
This product is non-toxic and can be decocted as a tea substitute for regular consumption.

化学成分 Chemical Composition

茎含三酰甘油，酚酸，甾醇酯，游离甾醇，游离脂肪酸，蜡，n-石蜡，糖醇，单糖，双糖及多糖。
Stems contain triglycerides, phenolic acids, sterol esters, free sterols, free fatty acids, wax, n-paraffin, sugar alcohols, monosaccharides, disaccharides, and polysaccharides.

相关论述 Relevant Discussion

《本草拾遗》：“主治人、畜为虎、狼等伤，恐毒入肉者。取茎杂葛根浓煮服之，亦取汁。”
"Compendium of Materia Medica": "Used to treat injuries in humans and animals caused by tigers, wolves, etc., especially when there is fear of poison entering the body. Boil the stems with kudzu root and take the decoction, or extract the juice."

《纲目》：“煮汁服，散血。”
"Compendium of Materia Medica": "Boil the juice and drink it to disperse blood stasis."

《动植物民间药》：“利尿，解热，解毒。治风邪。”
"Folk Medicine of Animals and Plants": "Diuretic, antipyretic, and detoxifying. Used to treat wind-related ailments."

临床应用附注 Clinical Application Notes

《纲目》：“芒有二种，皆丛生，叶皆如茅而大，长四、五尺，甚快利，伤人如锋刃。七月抽长茎，开白花成穗，如芦苇花者芒也；五月抽短茎，开花如芒者石芒也。”
"Compendium of Materia Medica": "There are two types of 'Mang', both growing in clusters, with leaves resembling reed leaves but larger, four to five chi long, very sharp, capable of injuring people like blades. In July, they produce long stems and bloom white flowers in spikes, resembling reed flowers—this is 'Mang'. In May, they produce short stems and bloom flowers similar to Mang—this is 'Stone Mang'."

加工炮制 Processing and Preparation

采收加工：7-10月采收，切段，鲜用或晒干。
Harvest from July to October, cut into sections, and use fresh or dry in the shade.

植物学信息 Botanical Information

植物种属：禾本科芒属植物芒。
The plant species is Miscanthus sinensis, belonging to the Poaceae family.

形态特征 Morphological Characteristics

宿根多年生草本。高1-2m。无毛或在花序以下疏具柔毛。叶鞘均长于节间，除鞘口有长柔毛外，余均无毛；叶舌钝圆，长1-2mm，先端具纤毛；叶片线形，长20-50cm，宽6-10mm，无毛，或下面疏具柔毛并被白粉。圆锥花序扇形，长15-40cm，分枝较强壮而直立，每节具1短柄和1长柄小穗；穗轴节间长4-8mm，无毛；短柄长1.5-2（-3）mm，长柄向外开展，长4-6mm；小穗披针形，长4.5-5mm，基盘具白色至黄褐色之丝状毛；第一颖先端渐尖，具2脊，背部全部无毛，具3脉，第二颖舟形，先端渐尖，背部无毛，边缘具小纤毛；第一外稃长圆状披针形，先端钝；第二外稃较狭，在先端1/3处以上具2齿，齿间具1芒，芒长8-10mm，膝曲，芒柱稍扭曲，内稃微小，先端不规则地齿裂。花、果期7-11月。
Perennial herbaceous plant with a woody root. It grows to a height of 1–2 m. Glabrous or sparsely pubescent below the inflorescence. Leaf sheaths longer than internodes, glabrous except for long soft hairs at the mouth; ligule bluntly rounded, 1–2 mm long, fringed; leaf blade linear, 20–50 cm long, 6–10 mm wide, glabrous or sparsely pubescent beneath and covered with white powder. Panicle fan-shaped, 15–40 cm long, branches strong and erect, each node bearing one sessile and one pedicellate spikelet; rachis internodes 4–8 mm long, glabrous; short pedicel 1.5–2(–3) mm, long pedicel spreading outward, 4–6 mm; spikelet lanceolate, 4.5–5 mm long, base with white to yellowish-brown silky hairs; first glume tapering to a point, with 2 keels, back glabrous, 3-veined; second glume boat-shaped, apex tapering, back glabrous, margins ciliate; first lemma oblong-lanceolate, apex obtuse; second lemma narrower, with 2 teeth above the upper third, awn arising between teeth, 8–10 mm long, geniculate, awn column slightly twisted; palea minute, apex irregularly toothed. Flowering and fruiting from July to November.

分布区域 Distribution Area

广布南北各地。
Widely distributed throughout northern and southern China.

生长环境 Growing Environment

生于山坡草地或河边湿地。
Grows on mountain slopes, grasslands, or riverside wetlands.