小药木，中药名。为山矾科植物老鼠矢SymplocosstellarisBrand的叶或根。分布于长江以南及台湾各地。具有活血，止血之功效。常用于跌打损伤，内出血。
Xiao-yao-mu, name of Chinese Medicinal Material. It refers to the leaves or roots of Symplocos stellaris Brand, a plant of the family Symplocaceae, distributed in areas south of the Yangtze River and Taiwan. It has the functions of promoting blood circulation and stopping bleeding, and is commonly used for injuries from falls and internal bleeding.

功效作用 功能
The efficacy and functions.

活血，止血。主治
Promoting blood circulation and stopping bleeding. Used to treat...

用于跌打损伤，内出血。用法用量
For contusions and internal bleeding. Dosage and administration.

内服：煎汤，9-15g。外用：适量，捣敷。加工炮制 采收加工
Internal use: Decoction, 9-15g. External use: Appropriate amount, pounded for application. Processing: Harvest and process.

叶，春夏季采摘；根，秋冬季采挖，洗净。均鲜用或晒干。植物学信息 植物种属
Leaves should be harvested in spring and summer, while roots should be dug up in autumn and winter, and then cleaned. They can be used fresh or dried. Botanical information about the plant species is also needed.

山矾科植物老鼠矢。形态特征
The plant "Lao Shu Shi" belongs to the family Rhus. Its morphological characteristics include...

常绿乔木，小枝粗，髓心中空，具横隔；芽、嫩枝、嫩叶柄、苞片和小苞片均被红褐色绒毛。叶厚革质，叶面有光泽，叶背粉褐色，披针状椭圆形或狭长圆状椭圆形，长6-20厘米，宽2-5厘米，先端急尖或短渐尖，基部阔楔形或圆，通常全缘，很少有细齿；中脉在叶面凹下，在叶背明显凸起，侧脉每边9-15条，侧脉和网脉在叶面均凹下，在叶背不明显；叶柄有纵沟，长1.5-2.5厘米。团伞花序着生于二年生枝的叶痕之上；苞片圆形，直径3-4毫米，有缘毛；花萼长约3毫米，裂片半圆形，长不到1毫米，有长缘毛；花冠白色，长7-8毫米，5深裂几达基部，裂片椭圆形，顶端有缘毛，雄蕊18-25枚，花丝基部合生成5束；花盘圆柱形，无毛；子房3室；核果狭卵状圆柱形，长约1厘米，顶端宿萼裂片直立；核具6-8条纵棱。花期4-5月，果期6月。分布区域
Evergreen trees, with thick branches, hollow pith, and transverse septa; buds, young branches, petioles of young leaves, bracts, and bracteoles are all covered with reddish-brown hairs. The leaves are thick and leathery, glossy on the upper surface, and powdery brown on the lower surface, lanceolate or narrowly elliptic, 6-20 cm long, 2-5 cm wide, abruptly acute or shortly acuminate at the apex, broadly cuneate or rounded at the base, usually entire, rarely finely serrate; the midvein is concave on the upper surface and prominently raised on the lower surface, with 9-15 pairs of lateral veins, both the lateral veins and the reticulate veins are concave on the upper surface and not obvious on the lower surface; the petiole has a longitudinal groove, 1.5-2.5 cm long. The umbellate inflorescences are borne above the leaf scars on the second-year branches; the bracts are circular, 3-4 mm in diameter, with margins hairy; the calyx is about 3 mm long, with lobes semi-circular, less than 1 mm long, and long-hairy margins; the corolla is white, 7-8 mm long, deeply 5-lobed, with elliptic lobes and hairy tips, 18-25 stamens, with the filaments basally connate into 5 bundles; the disc is cylindrical, hairless; the ovary is 3-locular; the fruit is narrowly ovoid-cylindrical, about 1 cm long, with the persistent calyx lobes erect at the apex; the seed has 6-8 longitudinal ridges. Flowering occurs from April to May, and fruiting occurs in June. Distributed in...

分布于长江以南及台湾各地。生长环境
Distributed in various regions south of the Yangtze River and in Taiwan. Growing environment.

生于海拔1100m左右的山地、路旁、疏林中。
Born in the mountainous area at an altitude of around 1100 meters, by the roadside, and in sparse forests.