色赤杨，中药名。为桦木科植物辽东桤木AlnussibiricaFisch.exTurcz.[A.hirsutaTurcz.var.sibirica(Fisch)Schneid;A.tinctoriaSarg.]）的树皮。辽东桤木分布于东北及内蒙古、山东等地。具有清热，止咳，化痰，平喘之功效。常用于慢性气管炎。
Se-chi-yang, name of Chinese Medicinal Material. It is the bark of Alnus sibirica Fisch. ex Turcz. [A. hirsuta Turcz. var. sibirica (Fisch) Schneid; A. tinctoria Sarg.], a plant of the Betulaceae family. Alnus sibirica is distributed in Northeast China, Inner Mongolia, Shandong, and other areas. It has the functions of clearing heat, relieving cough, resolving phlegm, and alleviating asthma. It is commonly used for chronic bronchitis.

功效作用 功能
The efficacy and functions.

清热，止咳，化痰，平喘。主治
Clearing heat, stopping cough, resolving phlegm, and relieving asthma.主治

用于慢性气管炎。用法用量
Used for chronic bronchitis. Dosage and administration.

内服：煎汤，10-15g。药理作用
Internal administration: Decoction, 10-15g. Pharmacological effects.

1、止咳、祛痰与平喘作用；2、抑菌作用。相关论述

1. Antitussive, expectorant, and anti-asthmatic effects; 2. Antibacterial effects. Relevant discussions.

《吉林医科大学通讯》：“治老年慢性支气管炎。”加工炮制 采收加工
"Jilin Medical University Communication": "Treatment of Chronic Bronchitis in the Elderly." Processing and Preparation of Medicinal Herbs.

冬、春季采集，干燥或半干燥后切片。植物学信息 植物种属
The herbs are collected in winter and spring, and then dried or semi-dried before being sliced. Botanical information includes the plant species and genus.

桦木科植物辽东桤木。形态特征
Betulaceae plant: Liaodong birch. Morphological characteristics

辽东桤木：又名水冬瓜赤杨。落叶乔木，高6～20m。树皮灰褐色，光滑；枝条暗灰色，有棱；小枝褐色，密生灰色柔毛；芽有柄，芽鳞2枚，有毛。叶柄长1．5～5．5cm；叶片近圆形，稀卵形，长4～9cm，宽2．5～9cm，先端圆形，稀锐尖，基部圆形或宽楔形，边缘有波状缺刻，或为粗重锯齿，上面疏生毛，下面粉绿色，密生褐色毛或无毛，有时脉腋间簇生髯毛；侧脉5～10对，直伸齿端。花单性，雌雄同株；果序2～8枚呈总状或圆锥状排列，果序梗极短，长2～3mm或几无梗；果苞木质，先端微圆，有5枚浅裂片，小坚果宽卵形，长约3mm；果翅厚纸质，极狭，宽为果的1/4。花期5月，果期8～9月。分布区域
Liaodong oak: also known as water winter melon and red poplar. It is a deciduous tree, 6-20m tall. The bark is gray-brown and smooth; the branches are dark gray with edges; the twigs are brown, densely covered with gray soft hairs; the buds have stalks, with 2 scales and hairs. The petiole is 1.5-5.5cm long; the leaf blade is nearly circular, rarely ovate, 4-9cm long, 2.5-9cm wide, with a rounded or rarely acute apex, a rounded or broadly wedge-shaped base, wavy serrations on the margin, or coarse serrations, sparsely hairy on the upper surface, powdery green or densely brown hairy, sometimes with tufts of hairs in the vein axils; 5-10 pairs of lateral veins, straight to the tooth tip. The flowers are monoecious, with both male and female flowers on the same plant; the fruits are arranged in 2-8 in a corymb or conical shape, with a very short peduncle, 2-3mm long or nearly absent; the fruit bracts are woody, with a slightly rounded apex and 5 shallowly lobed pieces, the small nut is broadly ovate, about 3mm long; the wings of the fruit are thick and papery, extremely narrow, about 1/4 the width of the fruit. The flowering period is in May, and the fruiting period is in August to September. Distribution area.

分布于东北及内蒙占、山东等地。生长环境
Distributed in the Northeast, Inner Mongolia, Shandong, and other regions. Growing environment.

生于海拔700～l500m的山坡林中、河岸或潮湿地。
Born in the mountainous slopes, riverbanks, or wetlands at an altitude of 700 to 1500 meters.