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水杨柳喜湿耐阴,四时常绿,是赏食皆宜又十分适合室内水培的天然野生植物。又叫柳叶白前、白前、石杨柳等,为萝藦科多年生直立半灌木。它纤细多姿,是极具美感的挺水植物。性味辛甘,具有清热利肺、祛痰止咳的功效,是医治伤风感冒的一味良药,民间常用其枝叶做清凉茶饮。主要分布于河南南部及长江以南地区,喜聚生于山谷、溪边等阴湿处。株高25～60厘米,根状茎灰绿色,纤细有分枝,节处须根密生。叶片线状披针形,对生,全缘,上面深绿色,下面淡绿色。
Water Willow moist wet shade, four green evergreen, is a rewarding and very suitable for indoor hydroponics natural wild plants. Also known as willow white, white front, willow and so on, for the radish Branch perennial erection half shrub. It is slender, it is a very beautiful water plants. Symptoms Xin Gan, with heat lungs, expectorant cough effect, is to treat cold and flu of blind medicine, folk foliage leaves do herbal tea. Mainly distributed in southern Henan and south of the Yangtze River, happy gather was born in the valleys, creek wet shady. Plant height of 25 to 60 cm, rhizome grayish green, slender branches, fibrous roots abound. Leaves linear-lanceolate, opposite, entire, dark green above, light green below.