论文部分内容阅读
荠菜,别名护生草,是最早返青的十字花科,荠属,一年生或二年生草本,株高10～40厘米,基生叶莲座状,大头羽状分裂或羽状分裂,偶有全缘,长约12厘米,宽约2.5厘米。茎生叶狭披针形或披针形,基部箭形,抱茎,叶缘有缺刻或锯齿。总状花序顶生或腋生,花白色,直径约2毫米,十字形花冠,花4～6个月。短角果,倒三角形,长5～8毫米,宽4～7毫米,扁平,先端微凹。
Shepherd’s purse, alias nursing grass, is the earliest evergreen Cruciferae, chestnuts, annual or biennial herbs, plant height of 10 to 40 cm, basal leaves rosette-shaped, large pinnate or pinnate, sometimes marginalized, About 12 cm long and 2.5 cm wide. Stem leaves narrowly lanceolate or lanceolate, base arrow-shaped, amplexicaul, margin margin notched or serrate. Racemes terminal or axillary, white flowers, ca. 2 mm in diam. Corolla, flowers 4 to 6 months. Short angle fruit, inverted triangle, 5 to 8 mm long, 4 to 7 mm wide, flat, apex dimple.