桐叶，中药名。为玄参科泡桐属植物泡桐Paulowniafortunei（Seem.）Hemsl.或毛泡桐Paulowniatomentosa（Thunb.）Steud.的叶。植物泡桐，分布于我国安徽、浙江、福建、台湾、江西、湖北、湖南、四川、云南、贵州、广东、广西，野生或栽培，在山东、河北、河南、陕西等地近年有引种，越南及老挝也有；植物毛泡桐，分布于我国辽宁南部、河北、河南、山东、江苏、安徽、湖北、江西等地，通常栽培，西部地区有野生，日本，朝鲜，欧洲和北美洲也有引种栽培。具有清热解毒，化瘀止血之功效。主治疔疮、乳痈，肠痈，丹毒，跌打损伤，瘀滞肿痈。
Tong-ye, name of Chinese Medicinal Material. efers to the leaves of the plants Paulownia fortunei (Seem.) Hemsl. or Paulownia tomentosa (Thunb.) Steud. in the family Scrophulariaceae. The plant Paulownia is distributed in Anhui, Zhejiang, Fujian, Taiwan, Jiangxi, Hubei, Hunan, Sichuan, Yunnan, Guizhou, Guangdong, and Guangxi provinces of China, where it grows wild or is cultivated. In recent years, it has also been introduced to Shandong, Hebei, Henan, and Shaanxi provinces. It is also found in Vietnam and Laos. The plant Paulownia tomentosa is distributed in the southern part of Liaoning, Hebei, Henan, Shandong, Jiangsu, Anhui, Hubei, Jiangxi, and other areas of China. It is usually cultivated, with wild populations in western regions. It has also been introduced and cultivated in Japan, Korea, Europe, and North America. Tong-ye is known for its efficacy in clearing heat, detoxification, promoting blood circulation, and stopping bleeding. It is used to treat furuncles, breast abscesses, intestinal abscesses, erysipelas, bruises, and stagnant swellings.

功效作用 功能
Efficacy, function.

清热解毒，化瘀止血。主治
Clearing heat, detoxifying, resolving stasis, and stopping bleeding. Mainly used for治疗.

疔疮、乳痈，肠痈，丹毒，跌打损伤，瘀滞肿痈。用法用量
Boils, breast abscess, intestinal abscess, erysipelas, bruises, and stagnant swelling abscess. Dosage and usage.

内服：煎汤，2～30g。外用：适量，以醋蒸贴，捣敷或捣汁涂患处。药理作用
Internal use: Decoction, 2-30g. External use: Appropriate amount, steamed with vinegar for application, pounded for poultice, or pounded for juice to apply to the affected area. Pharmacological actions.

抗癌作用。相关论述
Anti-cancer effects. Relevant discussions.

1、《神农本草经》：“主恶蚀疮著阴。”2、《本草纲目》：“消肿毒、生发。”临床应用 相关配伍

1. "Shen Nong's Classic of Materia Medica": "Used for treating malignant ulcers with a yin nature."2. "Compendium of Materia Medica": "Reduces swelling and toxins, promotes hair growth." Clinical applications and relevant combinations.

1、治发落不生，桐叶一把，麻子仁三升，米泔煮五六沸，去滓。日日洗之则长。（《肘后方》）2、治手足浮肿，桐叶煮汁渍之，并饮少许。或加小豆，尤妙。（《圣惠方》）加工炮制 采收加工

1. To treat hair loss and promote hair growth, take a handful of tong leaves, three sheng of mahzi ren, and cook them in rice washing water until it boils five or six times. Remove the residue. Wash the hair with this solution daily to promote hair growth. (From "Zhou Hou Fang")2. To treat edema in the hands and feet, cook tong leaves to make a decoction, soak the affected areas in it, and drink a small amount. You can also add small beans for better effect. (From "Sheng Hui Fang") Processing and preparation: Harvest and process.

秋季之前采摘，阴干。植物学信息 植物种属
Harvest before autumn and dry in the shade. Botanical information: plant species.

玄参科泡桐属植物泡桐或毛泡桐。形态特征
The plant belongs to the Scrophulariaceae family, and it is either the Paulownia tomentosa or the Paulownia fortunei. Here are the morphological characteristics.

1、植物泡桐，别名白花泡桐，乔木高达30米，树冠圆锥形，主干直，胸径可达2米，树皮灰褐色；幼枝、叶、花序各部和幼果均被黄褐色星状绒毛，但叶柄、叶片上面和花梗渐变无毛。叶片长卵状心脏形，有时为卵状心脏形，长达20厘米，顶端长渐尖或锐尖头，其凸尖长达2厘米，新枝上的叶有时2裂，下面有星毛及腺，成熟叶片下面密被绒毛，有时毛很稀疏至近无毛；叶柄长达12厘米。花序枝几无或仅有短侧枝，故花序狭长几成圆柱形，长约25厘米，小聚伞花序有花3～8朵，总花梗几与花梗等长，或下部者长于花梗，上部者略短于花梗；萼倒圆锥形，长2～2.5厘米，花后逐渐脱毛，分裂至1/4或1/3处，萼齿卵圆形至三角状卵圆形，至果期变为狭三角形；花冠管状漏斗形，白色仅背面稍带紫色或浅紫色，长8～12厘米，管部在基部以上不突然膨大，而逐渐向上扩大，稍稍向前曲，外面有星状毛，腹部无明显纵褶，内部密布紫色细斑块；雄蕊长3～3.5厘米，有疏腺；子房有腺，有时具星毛，花柱长约5.5厘米。蒴果长圆形或长圆状椭圆形，长6～10厘米，顶端之喙长达6毫米，宿萼开展或漏斗状，果皮木质，厚3～6毫米；种子连翅长6～10毫米。花期3～4月，果期7～8月。2、植物毛泡桐，乔木高达20米，树冠宽大伞形，树皮褐灰色；小枝有明显皮孔，幼时常具粘质短腺毛。叶片心脏形，长达40厘米，顶端锐尖头，全缘或波状浅裂，上面毛稀疏，下面毛密或较疏，老叶下面的灰褐色树枝状毛常具柄和3～12条细长丝状分枝，新枝上的叶较大，其毛常不分枝，有时具粘质腺毛；叶柄常有粘质短腺毛。花序枝的侧枝不发达，长约中央主枝之半或稍短，故花序为金字塔形或狭圆锥形，长一般在50厘米以下，少有更长，小聚伞花序的总花梗长1～2厘米，几与花梗等长，具花3～5朵；萼浅钟形，长约1.5厘米，外面绒毛不脱落，分裂至中部或裂过中部，萼齿卵状长圆形，在花中锐头或稍钝头至果中钝头；花冠紫色，漏斗状钟形，长5～7.5厘米，在离管基部约5毫米处弓曲，向上突然膨大，外面有腺毛，内面几无毛，檐部2唇形，直径约小5厘米；雄蕊长达2.5厘米；子房卵圆形，有腺毛，花柱短于雄蕊。蒴果卵圆形，幼时密生粘质腺毛，长3～4.5厘米，宿萼不反卷，果皮厚约1毫米；种子连翅长约2.5～4毫米。花期4～5月，果期8～9月。分布区域

1. The plant Paulownia, also known as the white-flowered Paulownia, is a tall tree that can grow up to 30 meters high. It has a conical crown, a straight main trunk, and a breast diameter of up to 2 meters. The tree bark is gray-brown. The young branches, leaves, flower clusters, and young fruits are all covered with yellow-brown star-shaped hairs, but the petioles, upper leaf surfaces, and flower stalks gradually become hairless. The leaf blades are long ovate-heart-shaped, sometimes ovate-heart-shaped, up to 20 centimeters long, with long gradually pointed or sharp tips at the apex, with protruding tips up to 2 centimeters long. The leaves on the new branches are sometimes bifurcated, with star-shaped hairs and glands on the underside, while the mature leaf undersides are densely covered with hairs, sometimes sparsely hairy to nearly hairless; the petioles can be up to 12 centimeters long. The flower clusters have few or only short lateral branches, so the flower clusters are narrow and almost cylindrical, about 25 centimeters long. Each small umbel flower cluster has 3 to 8 flowers, with the total flower stalks almost equal in length to the individual flower stalks, or the lower ones longer than the flower stalks, and the upper ones slightly shorter than the flower stalks. The calyx is inverted conical, 2 to 2.5 centimeters long, gradually becoming hairless after flowering, splitting to about 1/4 or 1/3 of the way down, with calyx teeth ranging from oval to triangular-ovate, becoming narrow triangular at the fruiting stage. The corolla is tubular-funnel-shaped, white with a slight purple or light purple tint on the back, 8 to 12 centimeters long. The tube does not abruptly expand above the base but gradually widens upwards, slightly curved forward, with star-shaped hairs on the outside, no obvious longitudinal folds on the abdomen, and densely covered with purple fine patches on the inside. The stamens are 3 to 3.5 centimeters long, with sparse glands; the ovary has glands, sometimes with star-shaped hairs, and the style is about 5.5 centimeters long. The capsule is oblong or oblong-elliptic, 6 to 10 centimeters long, with a beak at the top up to 6 millimeters long, the persistent calyx spreading or funnel-shaped, the fruit skin woody, 3 to 6 millimeters thick; the seeds with wings are 6 to 10 millimeters long. The flowering period is from March to April, and the fruiting period is from July to August.2. The plant Paulownia tomentosa, a tall tree that can grow up to 20 meters high, has a wide umbrella-shaped crown and brownish-gray bark. The small branches have obvious lenticels, and when young, they often have sticky short glandular hairs. The leaf blades are heart-shaped, up to 40 centimeters long, with sharp tips at the apex, entire or shallowly lobed margins, sparsely hairy on the upper surface, and densely or less densely hairy on the lower surface. The gray-brown dendritic hairs on the undersides of old leaves often have stalks and 3 to 12 slender filamentous branches. The leaves on the new branches are larger, with hairs that are often unbranched, sometimes with sticky glandular hairs; the petioles often have sticky short glandular hairs. The lateral branches of the flower clusters are undeveloped, about half the length of the central main branch, so the flower clusters are pyramid-shaped or narrowly conical, generally less than 50 centimeters long, with few longer ones. The total flower stalks of the small umbel flower clusters are 1 to 2 centimeters long, almost equal in length to the individual flower stalks, with 3 to 5 flowers; the calyx is shallowly bell-shaped, about 1.5 centimeters long, with persistent hairs on the outside, splitting to the middle or beyond, with ovate-oblong calyx teeth, sharp or slightly blunt in the flowers, and blunt in the fruits. The corolla is purple, funnel-shaped bell-shaped, 5 to 7.5 centimeters long, curved about 5 millimeters from the base of the tube, suddenly expanding upwards, glandular on the outside, almost hairless on the inside, with a 2-lipped limb, about 5 centimeters in diameter; the stamens are up to 2.5 centimeters long; the ovary is ovate, glandular, and the style is shorter than the stamens. The capsule is ovate, densely covered with sticky glandular hairs when young, 3 to 4.5 centimeters long, with the persistent calyx not curling back, and a fruit skin about 1 millimeter thick; the seeds with wings are about 2.5 to 4 millimeters long. The flowering period is from April to May, and the fruiting period is from August to September. Distribution area.

1、植物泡桐，分布于我国安徽、浙江、福建、台湾、江西、湖北、湖南、四川、云南、贵州、广东、广西，野生或栽培，在山东、河北、河南、陕西等地近年有引种，越南及老挝也有。2、植物毛泡桐，分布于我国辽宁南部、河北、河南、山东、江苏、安徽、湖北、江西等地，通常栽培，西部地区有野生，日本，朝鲜，欧洲和北美洲也有引种栽培。生长环境

1. The plant Paulownia is distributed in Anhui, Zhejiang, Fujian, Taiwan, Jiangxi, Hubei, Hunan, Sichuan, Yunnan, Guizhou, Guangdong, and Guangxi provinces of China. It can be found in the wild or cultivated, and in recent years it has been introduced in Shandong, Hebei, Henan, Shaanxi, and other regions. It is also found in Vietnam and Laos.2. The plant Paulownia tomentosa is distributed in southern Liaoning, Hebei, Henan, Shandong, Jiangsu, Anhui, Hubei, Jiangxi, and other regions of China. It is usually cultivated, with wild populations in western regions. It has also been introduced and cultivated in Japan, Korea, Europe, and North America. Growth environment.

1、植物泡桐，生于低海拔的山坡、林中、山谷及荒地，越向西南则分布越高，可达海拔2000米。2、植物毛泡桐，生于海拔1800米处。

1. The Chinese tulip tree grows on low-altitude slopes, in forests, valleys, and wastelands. The higher the distribution towards the southwest, the higher it can reach, up to an altitude of 2000 meters.2. The Chinese hairy tulip tree grows at an altitude of 1800 meters.