In northern China, the leaves turn purple-red in autumn and winter, hence the name "Xuelihong". In southern China, because "Xuelihong" that turns purple is rarely seen, it is also misunderstood as "Xuelihong".

1. Xuelihong, an annual herb, a variant of mustard. Pickle the mustard leaves and stems to get Xuelihong (also known as Xuelihong), commonly known as spicy vegetables. The leaves are deeply lobed, with wrinkled edges, and the flowers are bright yellow. The stems and leaves are common vegetables that are usually eaten pickled.

Another: According to the research of the famous lexicologist Wang Guanghan's "Research on Dictionary Issues * Review of Recommended Word Forms of "Modern Chinese Dictionary"", it is regarded as "Xuelihong". Hong, "Guangyun" is pronounced as "Hu Gongqie", and "Jiyun" is interpreted as "Mao". "Guangqun Fangpu·Vegetable Pu 5": "There is a vegetable called Xuelihong in the Siming Dynasty. When the snow is deep, all vegetables are damaged by freezing, and this vegetable is the only one green." It is said that this vegetable grows more luxuriantly when it snows, hence its name. It is the young stems and leaves of the cruciferous plant mustard. It is a variant of mustard greens with leaves in the mustard family.

2. Morphological characteristics

Annual herb, 30-150 cm tall, often hairless, sometimes young stems and leaves have stinging hairs, pink frost, spicy taste; stems erect , branched.

The basal leaves are oblanceolate or oblong, not split or slightly notched, and have irregular or heavily serrated teeth. The upper and top stem leaves are small, oblong, and entire. Edge, shrinkage.

The racemes are terminal and extended after flowering; the flowers are yellow, 7-10 mm in diameter; the pedicels are 4-9 mm long; the sepals are light yellow, oblong-elliptical, 4-5 mm long, and spread upright. ; Petals obovate, 8-10 mm long, 4-5 mm long. Siliques linear, 3-5.5 cm long, 2-3.5 mm wide, fruit valve with 1 prominent midrib; beak 6-12 mm long; fruit stem 5-15 mm long. Seeds are spherical, about 1 mm in diameter, purple-brown. The flowering period is from March to May, and the fruiting period is from May to June.

3. Geographical distribution

Cultivation in the northern and southern provinces of China. The type specimen was collected from Ningbo, Zhejiang.

4. Growth habits

Psoralea prefers a cool climate. The suitable temperature for growth is 15-20℃. Higher than 25℃ or lower than 15℃ will cause slow growth, small size, and Under high-temperature conditions, fibrous material increases and varieties decrease. Under low-temperature conditions, D. angustifolia will not freeze to death in cold snow. D. angustifolia grows well and rapidly under sufficient sunlight. Low temperature and long sunshine are conducive to the formation of flower buds, but D. angustifolia is still growing. Adequate moisture is needed during pregnancy. Lack of moisture will lead to an increase in fiber material.

5. Main value

Main function:

Stir-fried mustard root: This dish is rich in dietary fiber, has the effect of widening the intestines and appetizing, and is suitable for digestion Poor appetite, poor appetite, habitual constipation and other symptoms.

Stir-fried shredded pork with mustard greens: This dish is delicious, has the effects of improving eyesight, removing troubles, detoxifying and clearing away heat. It is suitable for those with red, swollen, hot and painful eyes, and those with habitual constipation, poor appetite, and a clear and irritable mind. Especially suitable for food.

Nutritional content: 9 vitamins, 7 minerals, fiber related to diet and protein. The leaves of Asparagus can protect against free radicals in the body. They are concentrated in beta-carotene and three antioxidants (vitamins E, A, C). Vitamin C has the effect of balancing the body's water-soluble environment.

Note: Potherb mustard contains a large amount of crude fiber and is not easy to digest. Children with digestive insufficiency should not eat more.

6. Plant Culture

"Guangyun Yishuang" records: "Pogon, a grassy vegetable with a long heart."

"Guangqun Fang Pu·Vegetable Pu" Five": "There is a dish called Xuelihong in Siming. If the snow is deep, there will be frost damage, so this dish is only green."

Ch'en Que of the Qing Dynasty. "Song of Steamed Vegetables": "Bottled vegetables are already beautiful when they are steamed. It is especially suitable for cooking in a rice pot, where the grain gas is dense. Once steamed, the color becomes moist, and when steamed again, the fragrance becomes deeper. If the steaming continues, the beauty is difficult to express." The poor man is ignorant of the taste of meat, and has a long-term relationship with him. A bowl of vegetables will be steamed for ten days, and if it is steamed for ten times, it will be enough for lunch. Cup, half a liter of wine at dusk, the two are inseparable, and the sound will last for thousands of years.