形态描述

落叶小灌木，高1-3米；小枝延长，具赤褐色微毛，后无毛；顶芽不明显，被开展的托叶包裹。叶对生，近无柄，薄革质，卵状披针形或卵状椭圆形，全缘，长2.5-4厘米，宽8-12毫米，顶端渐尖或短尖，基部阔楔形或近圆形；侧脉5-7对，被稀疏或稠密短柔毛；托叶小，早落。头状花序不计花冠直径4-5毫米，单生，顶生或兼有腋生，总花梗略被柔毛；小苞片线形或线状棒形；花萼管疏被短柔毛，萼裂片匙形或匙状棒形；花冠管长2-3毫米，5裂，花冠裂片三角状，紫红色。果序直径8-12毫米；小蒴果长卵状楔形，长3毫米。花、果期5-12月。

分布地区

产于广东、广西、福建、江苏、浙江、湖南、江西和陕西（秦岭南坡）；生于溪边、河边、沙滩等湿润地区。国外分布于朝鲜。模式标本采自广东，具体地点不详。

主要用途

茎纤维为绳索、麻袋、人造棉和纸张等原料。全株入药，枝干通经；花球清热解毒、治菌痢和肺热咳嗽；根煎水服治小儿惊风症。

其它

引用出处：中国植物志

中国植物志英文版

Low shrubs, deciduous, 1-3(-6) m tall; branches angled to terete, puberulent to tomentulose or glabrescent, sometimes lenticellate, with bark usually reddish brown. Leaves distichous, subsessile to shortly petiolate; petiole to 2 mm; blade drying papery, lanceolate, ovate-lanceolate, lanceolate-elliptic, or ovate-oblong, 2.5-4 × 0.8-1.2 cm, adaxially puberulent to glabrous, abaxially glabrescent to puberulent or sparsely pilosulous at least along veins, base obtuse to rounded, apex acute or acuminate; secondary veins 5-7 pairs, with pilosulous domatia; stipules persistent to deciduous, ligulate to ovate in outline, 2-5 mm, puberulent to glabrous, deeply bilobed, lobes narrowly triangular, acute to acuminate, erect to reflexed. Inflorescences densely puberulent or strigillose to glabrescent; peduncles 1-5 cm, with bracts 2-4 mm; flowering heads borne separately on axillary or sometimes apically paired peduncles, 4-7 mm in diam. across calyces, 10-12 mm in diam. across corollas; bracteoles linear or linear-clavate, 1-2 mm. Calyx puberulent to glabrescent; ovary portion obconic, 0.8-1 mm; limb deeply lobed, lobes spatulate or spatulate-clavate, 1-2 mm, at apex thickened, rounded, papillose. Corolla white or flushed with pink or purple on lobes, slenderly funnelform, outside glabrescent, puberulent, or hirtellous with trichomes often purple-red; tube 2-3 mm; lobes deltoid to ligulate, 0.5-1 mm, acute to obtuse. Stigma obovoid, 0.2-0.3 mm, exserted for 3-4 mm. Fruiting heads 8-12 mm in diam. Capsules oblong-obcuneate, 3-4 mm, puberulent, hirtellous, or glabrescent; seeds ca. 1.5 mm. Fl. and fr. May-Dec. Wet sites at streamsides, riversides, and sand beaches; below 100-600 m. Fujian, Guangdong, Guangxi, Hunan, Jiangsu, Jiangxi, Shaanxi, Zhejiang [Korea]. This is a widespread and frequently collected species. The stipules are sometimes completely split, with the lobes falling separately, and can be confused with triangular entire stipules if care is not taken. How (Sunyatsenia 6: 249. 1946) noted that this species is effective for stabilization of slopes.----from “Flora of China”