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早春,在耕地、田野、路旁、灌丛下,人们会不时地看到一种开黄色小花的植物,她在尚带寒意的春风中怒放,成片生长状如黄色地毯,给大自然带来一派生机,它就是葶苈子。葶苈子(Draba nemorosa)是十字花科一年生草本植物,别名葶苈、猫耳朵等,葶苈子是它的中药名。植株高10～20厘米,根出叶数枚,呈莲座丛生;茎叶互生,卵形或长圆状卵形,无柄,先端稍尖;顶生总状花序,花黄色,径约2毫米,花瓣4;短角果椭圆形至长圆形,扁平,长6～9毫米,宽2～2.5毫米。
In the early spring, under the fields of cultivated land, fields, roadsides and shrubs, people sometimes see a plant with yellow flowers. In full bloom with cold spring breeze, she grows into a piece of yellow carpet, giving the natural belt Come to school, it is a prickly heat child. Draba nemorosa is an annual herb of cruciferous family, alias catfish, cat’s ear, etc. It is the name of traditional Chinese medicine. Plant height 10 to 20 cm, root out of several pieces, was rosette; stems and leaves alternate, ovate or oblong-ovate, sessile, apex slightly pointed; terminal racemes, flowers yellow, about 2 mm in diameter, Petals 4; segments angular to oblong, flat, 6 to 9 mm long and 2 to 2.5 mm wide.