What is green sepal plum? What are the morphological characteristics of green sepals?

1, green calyx (scientific name: Armenian mammesieb.f. viridicalyx (Mu Ye) t.y. Chen): small arbor, 4 4- 10/0m high; Bark light gray or greenish, smooth; Branchlets are green, smooth and hairless. Leaf blade ovate or elliptic, leaf margin usually with small sharp serrations, grayish green. Flowers solitary or sometimes two peanuts in 1 bud, with strong fragrance, open in front of leaves; Pedicel short, calyx green; Petals are disc-shaped, white and fragrant, which can be divided into single petals, double petals and compound petals; Calyx green, calyx tube bell-shaped, sepals ovoid or suborbicular, apex obtuse.

It is a famous plum blossom and the most gentlemanly plum blossom. There are dozens of varieties such as large-flowered green calyx, single-petaled green calyx and brocade-leaf green calyx. This kind of fruit is nearly spherical. It blooms in winter and spring and bears fruit in May-June. It is mostly used for garden viewing and can also be used for Chinese herbal medicine.

2. Morphological characteristics of plum blossom.

Green sepal plum, commonly known as green plum, is named after its green calyx, white flowers and green branchlets. In the classification system of plum varieties, it belongs to the green calyx type of true plum and is the best among plum strains.

(original variety) small trees, sparse shrubs, 4- 10 meters high; Bark light gray or greenish, smooth; Branchlets are green, smooth and hairless. Leaf blade is ovoid or ovoid, 4-8 cm long and 2.5-5 cm wide, with tip and tail tip, wide wedge-shaped to round base, leaf margin with small sharp serrations, grayish green, pubescent on both sides when young, gradually falling off when growing, or pubescent only between inferior veins; Petiole length 1-2 cm, hairy when young, shedding when old, often with glands.

Flowers solitary or sometimes two peanuts in 1 bud, 2-2.5 cm in diameter, with strong fragrance, opening first and then leaves; Pedicel is short, about 65438 0-3 mm long, often glabrous; Calyx is usually reddish brown, but some varieties of calyx are green or green purple; Calyx tube broadly campanulate, glabrous or sometimes pubescent; Sepals ovate or suborbicular, apex obtuse; Petals obovate, white to pink; Stamens short or slightly longer than petals; Ovary densely pilose, style short or slightly longer than stamens.

The fruit is nearly spherical, 2-3 cm in diameter, yellow or greenish white, pilose and sour; Mucosal nucleus; The nucleus is oval, with a round top and a small protruding tip, the base gradually narrows into a wedge shape, the two sides are slightly flat, the abdominal edge is slightly blunt, there are obvious longitudinal grooves on the ventral and dorsal sides, and there are honeycomb holes on the surface. It blooms in winter and spring and bears fruit in May-June. 2n= 16，24 .

Small deciduous trees, up to 10 m. The trunk is purplish brown with many longitudinal stripes. There are often thorns, and the branchlets are green or green as the background color. Ye Guang is ovoid to ovoid with a long cone or tail tip at the top. In early spring, the leaves open first in February-March, and peanuts are solitary or clustered in the axils of annual branches, solitary or reborn, with a dark fragrance. Drupe is spherical, with shallow groove on one side, hairy, ripe in June and yellow when ripe. Branchlets are green and have no purple halo.