蓝树，中药名。为夹竹桃科植物蓝树WrightialaevisHook.f.的根、叶和树皮。分布于广东、海南、广西、贵州和云南等地。具有清热解毒，止血敛疮之功效。常用于痄腮，毒蛇咬伤，刀伤出血，湿疹，疮疡溃烂。
Lan-shu, name of Chinese Medicinal Material. the root, leaves, and bark of the plant Wrightia laevis Hook.f. of the Apocynaceae family. It is distributed in Guangdong, Hainan, Guangxi, Guizhou, Yunnan, and other places. It has the effects of clearing heat, detoxifying, stopping bleeding, and healing wounds. It is often used for mumps, snake bites, bleeding from wounds, eczema, and ulceration of sores.

功效作用 功能
Efficacy and Functions

清热解毒，止血敛疮。主治
Clearing heat, detoxifying, stopping bleeding, and healing wounds. Mainly used for治疗。

痄腮，毒蛇咬伤，刀伤出血，湿疹，疮疡溃烂。用法用量
Mumps, snake bites, bleeding from knife wounds, eczema, and ulceration of sores. Dosage and administration.

内服：泡酒，适量饮。外用：适量，捣烂敷或煎水洗。注意事项
Internal use: Soak in alcohol and drink in moderation. External use: Apply in moderation, crush and apply as a poultice or boil in water for washing. Precautions.

有小毒慎用。相关论述
Use caution when dealing with minor poisons. Related discussions.

1、《广西本草选编》：“消肿生肌。”2、《全国中草药汇编》：“止血。外用治刀伤，跌打。”临床应用 相关配伍

1. "Guangxi Materia Medica Compilation": "Reduce swelling and promote tissue regeneration."2. "National Compilation of Chinese Herbal Medicine": "Stop bleeding. Used externally to treat cuts, wounds, and bruises." Clinical applications and relevant combinations.

1、治跌打损伤，腮腺炎：（蓝树）鲜叶适量，捣烂外敷。（《广西本草选编》）2、治荨麻疹，湿疹，疮疡溃烂：（蓝树）鲜根适量，水煎外洗。（《广西本草选编》）附注

1. For treating bruises and injuries, as well as mumps: Crush an appropriate amount of fresh leaves of the Indigo plant and apply externally. (From "Selected Compilation of Guangxi Materia Medica")2. For treating urticaria, eczema, and ulcerated sores: Use an appropriate amount of fresh roots of the Indigo plant, decoct in water, and use for external washing. (From "Selected Compilation of Guangxi Materia Medica") Note:

根、叶可药用，治跌打、刀伤出血。叶可作蓝色染料的原料。加工炮制 采收加工
Roots and leaves can be used as medicine to treat bruises, cuts, and bleeding. The leaves can also be used as a raw material for making blue dye. Processing and preparation involve harvesting and processing.

全年均可采，洗净，根与皮切片，晒干或鲜用。药材鉴别 鉴别
It can be harvested all year round, washed, and the roots and bark sliced before being dried in the sun or used fresh. Identification of the medicinal materials.

~叶片矩圆状椭圆形，长7-12cm，宽2.5-5cm，先端渐尖，基部楔形，全缘，羽状网脉，侧脉呈缝纫机轧孔状皱纹。气微，味微苦涩。~药材性状
~The leaf blade is oblong-elliptic, 7-12cm long and 2.5-5cm wide, gradually pointed at the apex, wedge-shaped at the base, with entire margins, pinnate veins, and lateral veins showing a sewing machine-pressed wrinkle pattern. It has a slight aroma and a slightly bitter taste.~ Characteristics of Medicinal Materials

叶片矩圆状椭圆形，长7-12cm，宽2.5-5cm，先端渐尖，基部楔形，全缘，羽状网脉，侧脉呈缝纫机轧孔状皱纹。气微，味微苦涩。植物学信息 植物种属
The leaves are broadly ovate to elliptic, 7-12cm long and 2.5-5cm wide, gradually pointed at the apex, and wedge-shaped at the base. They have entire margins, pinnate veins, and lateral veins with sewing machine-like wrinkles. The plant has a slight aroma and a slightly bitter taste. This information pertains to the botanical characteristics of a plant species.

夹竹桃科植物蓝树。形态特征
Nerium oleander, a plant in the Apocynaceae family. Morphological characteristics.

蓝树，又名海南倒吊笔、光叶倒吊笔。乔木，高8-20米，除花外，均无毛，具乳汁；树皮深灰色；小枝棕褐色，具皮孔。叶膜质，长圆状披针形或狭椭圆形至椭圆形，稀卵圆形，顶端渐尖至尾状渐尖，基部楔形，长7-18厘米，宽2.5-8厘米，无毛；叶脉在叶面扁平，在叶背略凸起，侧脉每边5-9（稀11）条，干后呈缝纫机轧孔状的皱纹；叶柄长5-7毫米。花白色或淡黄色，多朵组成顶生聚伞花序，长6厘米，宽8厘米；总花梗长1厘米，无毛至有微柔毛；花梗长1.0-1.5厘米，无毛至有微柔毛；苞片小；花萼短而厚，裂片比花冠筒短，卵形，长1毫米，顶端钝或圆，内面基部有卵形腺体；花冠漏斗状，花冠筒长1.5-3毫米，裂片椭圆状长圆形，长5.5-13.5毫米，宽3-4毫米，具乳头状凸起；副花冠分裂为25-35鳞片，呈流苏状，鳞片顶端条裂，基部合生，被微柔毛；雄蕊着生在花冠筒顶端，花药被微柔毛，长5毫米；子房由2枚离生心皮组成，无毛，花柱丝状，向上逐渐增大，柱头头状。蓇葖2个离生，圆柱状，顶部渐尖，长20-35厘米，直径7毫米，外果皮具斑点；种子线状披针形，长1.5-2厘米，顶端具白色绢质种毛；种毛长2-4厘米。花期4-8月，果期7月-翌年3月。分布区域
Blue tree, also known as Hainan hanging pen or light-leaf hanging pen, is a tall tree reaching 8-20 meters in height. It is mostly hairless except for the flowers, and contains latex. The tree bark is dark gray, and the small branches are brown with lenticels. The leaves are membranous, oblong-lanceolate or narrowly elliptic to elliptic, occasionally ovate, with gradually pointed or caudate tips, and wedge-shaped bases. They are 7-18 cm long and 2.5-8 cm wide, hairless, with flat veins on the upper surface and slightly raised veins on the lower surface. There are 5-9 (rarely 11) lateral veins on each side, forming sewing machine-like wrinkles when dried. The leaf stalk is 5-7 mm long. The flowers are white or pale yellow, arranged in multiple flowers in a terminal umbel inflorescence, 6 cm long and 8 cm wide. The peduncle is 1 cm long, hairless to slightly pubescent. The calyx is short and thick, with lobes shorter than the corolla tube, ovate, 1 mm long, blunt or rounded at the tip, with oval glands at the base of the inner surface. The corolla is funnel-shaped, with a tube 1.5-3 mm long, elliptic-lanceolate lobes, 5.5-13.5 mm long and 3-4 mm wide, with nipple-like protrusions. The corona is divided into 25-35 scales, forming a tassel-like structure, with split ends, fused at the base, and covered with fine hairs. The stamens are attached to the top of the corolla tube, with anthers covered in fine hairs, 5 mm long. The ovary consists of two separate carpels, hairless, with a filiform style gradually enlarging upwards, and a head-shaped stigma. The fruit consists of two separate follicles, cylindrical, gradually pointed at the top, 20-35 cm long and 7 mm in diameter, with spotted outer skin. The seeds are linear-lanceolate, 1.5-2 cm long, with white silky hairs at the tip, 2-4 cm long. The flowering period is from April to August, and the fruiting period is from July to March of the following year. Distribution area.

分布于广东、海南、广西、贵州和云南等地。生长环境
Distributed in Guangdong, Hainan, Guangxi, Guizhou, Yunnan, and other regions. Growing environment.

生于村中、路旁和山地疏林中或山谷向阳处，湿润肥沃之地。
Born in villages, along roadsides, sparse forests in mountainous areas, or sunny valleys, in moist and fertile soil.