大叶贯众，中药名。为鳞毛蕨科植物楔型大羽贯众CyrtomiummacrophyllumTagawaL.muticum(Christ)ChingetShing的根茎。具有清热解毒，凉血止血的功效。主治流感，乙脑，崩漏。
Da-ye-guan-zhong, name of Chinese Medicinal Material. It refers to the rhizome of Cyrtomium macrophyllum Tagawa L. muticum (Christ) Ching et Shing, a plant of the family Dryopteridaceae. It has the effects of clearing heat, detoxifying, cooling blood, and stopping bleeding. It is mainly used to treat influenza, Japanese encephalitis, and menorrhagia.

功效作用 功能
Efficacy, function.

清热解毒，凉血止血。主治
Clearing heat and detoxifying, cooling blood and stopping bleeding. Mainly used for治疗。

流感，乙脑，崩漏。用法用量
Influenza, Japanese encephalitis, and collapse. Dosage and administration.

内服：煎汤，9-15g。相关论述
Internal administration: Decoction, 9-15g. Relevant discussion.

《中国药用孢子植物》：“清热解毒，止血。用于预防流行性感冒、乙型脑炎和功能性子宫出血。”临床应用 相关配伍
"Chinese Medicinal Sporophyte Plants": "Clears heat, detoxifies, stops bleeding. Used for preventing influenza, hepatitis B, and functional uterine bleeding." Clinical applications and related compatibility.

1、预防流感，乙脑：大叶贯众15g，大青叶5g。煎服。2、治功能性子宫出血：大叶贯众15g，景天三七9g，墨旱莲15g。煎服。（1-2方出自《中国药用孢子植物》）加工炮制 采收加工

1. For preventing influenza and Japanese encephalitis: 15g of Herba Lysimachiae and 5g of Herba Artemisiae Scopariae are decocted and taken orally.2. For treating functional uterine bleeding: 15g of Herba Lysimachiae, 9g of Rhizoma Sedum Aizoon, and 15g of Rhizoma Osmundae are decocted and taken orally. (Formulas 1-2 are from "Chinese Medicinal Spore Plants") Processing and preparation: harvesting and processing.

全年均可采挖。除去泥砂和叶，晒干或鲜用。保存方法
It can be harvested all year round. Remove mud, sand, and leaves, then dry in the sun or use fresh. Methods of preservation.

贮于密闭干燥容器内。防止霉变。植物学信息 植物种属
Store in a sealed and dry container. Prevent mold growth. Botanical information about plant species.

鳞毛蕨科植物楔型大羽贯众。形态特征
The plant belongs to the family Lycopodiaceae, with wedge-shaped large fronds piercing through the crowd. It has distinctive morphological characteristics.

植株高40-80cmn。根茎斜升，与叶柄基部疏被暗褐色、阔披针形大鳞片，叶簇生；叶柄长20-30cm，深禾秆色，被疏鳞片，叶片纸质，椭圆形，长30-50cm，沿叶轴、羽柄被少数纤维状鳞片，单数一回羽状；羽片多至7对以上，通常向上渐变小，顶生羽叶三尖叉形，长达10cm，宽3-4cm，基部圆楔形或楔形，上侧往往稍突出；叶脉网状，中脉两侧各有网眼7-8行。孢子囊群生于内藏小脉中部；囊群盖圆盾形，全缘。分布区域
The plant grows to a height of 40-80cm. The rhizome is obliquely ascending, sparsely covered with dark brown, broadly lanceolate large scales at the base of the petiole, and the leaves are clustered. The petiole is 20-30cm long, deep straw-colored, sparsely covered with scales, and the leaf blade is papery, elliptic, 30-50cm long. Along the leaf axis and petiole, there are a few fibrous scales, and the leaf is pinnate with an odd number of leaflets. There are usually more than 7 pairs of leaflets, gradually decreasing in size towards the top, with the terminal leaflet being three-pointed, up to 10cm long and 3-4cm wide, with a rounded wedge-shaped or wedge-shaped base, often slightly protruding on the upper side. The veins are reticulate, with 7-8 rows of areoles on each side of the midrib. The sporangia are borne in the middle of the hidden minor veins; the sporangial cover is circular and shield-shaped with an entire margin. Distribution area.

分布于西南及陕西、甘肃、湖北、湖南、西藏等地。生长环境
Distributed in the southwest as well as Shaanxi, Gansu, Hubei, Hunan, Tibet, and other regions. Growing environment.

生于密林下或溪沟边。栽培技术
Born in the depths of the forest or by the stream. Cultivation techniques.

培养条件：孢子保存12天；荫棚内：24天萌发，温度17-28℃，平均24.5℃。
Cultivation conditions: Spore storage for 12 days; germination in the shade shed for 24 days, temperature ranging from 17-28°C, with an average of 24.5°C.