Rapeseed flower originated in Europe and Central Asia, is a cruciferous annual herbaceous plants. In China, rapeseed is centrally distributed in Jiangxi Wuyuan Huangling, Hanzhong Basin and Jiangling 10,000 mu terraces, Yunnan Luoping Plain, Qinghai Menyuan Plateau and so on. The plant is straight and tufted, with green stems and yellow flowers, and the basal leaves grow in a whirling stack, and the stem leaves, generally alternate, have no stipules.

Rapeseed originated in Europe and Central Asia, is a cruciferous annual herb. In China, rapeseed is concentrated in Jiangxi Wuyuan Huangling, Hanzhong Basin and Jiangling ten thousand mu terraces, Yunnan Luoping Plain, Qinghai Menyuan Plateau and so on. Plants straight clumps, stems green flowers yellow, basal leaves were spinning stacked growth, stem leaves, generally alternate, no stipules. Flowers bisexual, actinomorphic, petals 4, arranged in the shape of a cross, flower pieces like rice paper, tender yellow thin. The stamens are usually six, four long and two short, often called the "four strong stamens", and the pistil consists of two carpels, with the ovary positioned on top.