black nightshade
Black wolfberry
Solanum nigrum fruit is round, and Lycium barbarum is rectangular.
Solanum nigrum is a Solanum plant of Solanaceae. Alias black star, wild sea pepper, stone sea pepper, wild umbrella, leisurely, black day, black bean, star and so on.
Solanum nigrum is an annual erect herb with a height of 0.25 ~ 1 m. Its stem is green or purple, almost hairless or puberulent.
The leaves are ovoid, 2.5-10cm long and1.5-5.5cm wide, with a short apex, a wedge-shaped base to a broad wedge-shaped base down to the petiole, with irregular wavy coarse teeth on the whole or each side, smooth or sparsely pubescent on both sides, 5-6 veins on each side, and the petiole is about1-long. ?
Scorpion tail inflorescence is axillary and consists of 3 ~ 10 flowers. Total pedicels are about 1 ~ 2.5cm long, pedicels are about 5 mm long, nearly glabrous or pubescent. Calyx is small, shallow cup-shaped, about 1.5 to 2 mm in diameter, with a round top and an angle at the junction of two teeth at the base; Corolla white, tube hidden in calyx, less than 65438 0 mm long, edge about 2.5 mm long, 5-parted, lobes about 2 mm long; Filaments are short, anthers are yellow, about 65438±0.2mm long, about 4 times the length of filaments, and the apical pore is inward; The ovary is about 0.5 mm in diameter and the style is about 65438 0.5 mm in length. The middle part is covered with white fluff, and the stigma is small and head-shaped.
Berries are spherical, about 8 mm in diameter, and black when mature. Seeds are numerous, nearly ovoid, about 1.5 to 2 mm in diameter, compressed on both sides.
distribution range
China is distributed almost all over the country. Happy to be born in fields, wasteland, near villages.
Growth habit
The suitable temperature for growth is 22-30℃, and the suitable temperature for flowering and seed-setting period is 15-20℃, at which time the seed-setting rate is high. The requirements for soil are not strict, and it grows well on loam with rich organic matter and strong water and fertility conservation, but it lacks organic matter and has poor air permeability. The root system is underdeveloped, the plant growth is weak, and the commercialization is poor. The suitable soil pH is 5.5 ~ 6.5. It is difficult to grow in high temperature and high humidity open field in summer and autumn, and the growth in open field is slow in winter and spring. Young shoots are prone to fiber aging and poor commercialization. Therefore, in order to meet the market demand, it can be cultivated in protected areas all the year round.