Jiangnan cinnabar plum is a woody plant of the Rosaceae family and the Prunus genus. Dense, 1-3 flowers grow on various branches, with short internodes; Flowering period: early to late February, flower diameter: 2.8 (2.5-3.2) cm; Flower bud: oval shaped, round at the top, without a hole in the center, deep rose purple red; Floral form: disc-shaped, flat, with about 4 petals, layered sparse butterfly, or slightly tilted backwards when flowering; The color is light purple on the front and dark purple on the back,; Petals: fragmented petals; Sepals: 5-6,5, slightly to strongly recurve; Pedicle: short; Stamens: shorter than or equal to petals, radiating outwards; Pistil: 1-4, sometimes developed, often degenerated.

Mei is a woody plant belonging to the Rosaceae family and the Prunus genus. Small trees, sparse shrubs, 4-10 meters high; The bark is light gray or greenish, smooth; Twigs green, smooth and hairless. The leaves are oval or elliptical in shape, often with small sharp serrations on the edges, and gray green in color. The flowers are solitary or sometimes two flowers grow together in one bud, with a diameter of 2-2.5 centimeters, and have a strong fragrance that blooms before the leaves; The sepals are usually reddish brown, but some varieties have green or green purple sepals; Petals are inverted, white to pink in color. The fruit is nearly spherical, with a diameter of 2-3 centimeters, yellow or green white, covered in soft hairs and has a sour taste; Paste of fruit pulp and core; The nuclear ellipse is slightly flattened on both sides. The flowering period is in winter and spring, and the fruiting period is from May to June.