Cabbage (cabbage L.): It is an annual or biennial herb of Cruciferae and Brassica, a biennial herb covered with powdery frost. Short and stout annual stems are fleshy, unbranched, green or grayish green. The basal leaves are thick, layered into spheroids, oblate, milky white or light green.
Biennial stems are branched and have cauline leaves. Basal leaves are rounded at the top, sharply reduced to a very short petiole at the base, with broad wings and wavy and inconspicuous serrations at the edge; The upper stem leaves are ovate or oblong-ovate, and the stem is supported at the base; The top leaf is rectangular, about 4.5 cm long and 1 cm wide, holding the stem. Racemes terminal and axillary; Flowers pale yellow, 2-2.5 cm in diameter; Pedicel 7- 15 mm long.
Sepals erect, linear and oblong; Petals are broadly elliptic, obovate or nearly round, with slight defects at the top and obviously narrow claws at the base. The claws are 5-7 mm long. Silique is cylindrical, slightly flat on both sides, with prominent midvein and conical beak; The fruit stalks are thick and straight. Seeds spherical, brown. It blooms in April and bears fruit in May.
Cultivated throughout China for vegetables and fodder. The thick juice of leaves is used to treat gastric and duodenal ulcers. It is one of the important vegetables in China. Except for Chinese kale, which originated in China, all varieties of Chinese cabbage originated from the Mediterranean Sea to the North Sea coast.
As early as 4000-4500 years ago, it was cultivated in ancient Rome and ancient Greece. Northeast China is commonly known as "kohlrabi" and Yunnan is commonly known as "Lotus White".