Petiole length 12 cm, cauline leaves are similar to basal leaves, but smaller. Flowers small, bracts small, oblanceolate to obovate, pedicels slender, sepals white, often lavender, narrowly elliptic, petals spoon-shaped, nearly as long as filaments;
Gracilaria ovata, with convex lateral veins on the surface and oval seeds, blooms in March-April and bears fruit in April-May. Distributed in southwest, east and northeast China. Produced in Yuntai Mountain area and southern part of the province; Distributed in southern Henan and the middle and lower reaches of the Yangtze River.
Extended data:
Growth habit
Solanum nigrum is a cold-resistant and heat-resistant plant. The average temperature suitable for growth is 0 ~ 25℃, and the northern part of China belongs to temperate zone, which can reach -40-(-30)℃ in winter, so begonia can't grow. The south is tropical and subtropical, and it is hot all the year round, so sunflowers are not suitable for growth.
Therefore, Solanum nigrum can only be distributed in the north subtropical zone of Central China and the Yangtze River basin, and Anhui is the northern edge of Solanum nigrum distribution. Like humidity, it is often wild on the roadside of low mountains and in the shade of open spaces. Avoid stagnant water and cultivate in well-drained, loose and fertile loam.