What kind of flower is this, a small pink flower and a round bud?

The picture shows Lagerstroemia indica of Litchi family.

Deciduous shrubs or small trees, up to 7 meters high; Bark is smooth, gray or grayish brown; Branches twisted, branchlets slender, 4-angled, slightly winged. Leaves alternate or sometimes opposite, papery, oval, broadly oblong or obovate, 2.5-7cm long and 65438 0.5-4cm wide, short or blunt at the top, sometimes slightly concave, broadly wedge-shaped or nearly round at the base, hairless or puberulent below the midvein, with 3-7 pairs of lateral veins and no obvious veinlets; Sessile or petiole very short. Flowers are red or purple, white, 3-4 cm in diameter, usually forming a terminal panicle of 7-20 cm; Pedicel 3- 15 mm long, axis and pedicel pilose; The calyx is 7- 10 mm long, and the exterior is smooth without edges, but when it is fresh, the edge of the calyx tube is short, with microprotrusions, hairless on both sides, and the lobes are 6, triangular, upright and without appendages; Petals 6, shriveled, long 12-20 mm, with long claws; Stamens 36-42, 6 are inserted on the calyx outside, much longer than others; Ovary 3-6-loculed, glabrous. The capsule is ovoid, spherical or broadly elliptic, with a length of 1- 1.3 cm, green to yellow when it is young, purple-black when it is mature or dry, and its ventral part is cracked. Seeds winged, ca. The flowering period is from June to September, and the fruiting period is from September to June.

The tree has bright and beautiful colors, long flowering period and long life span, and the tree age is 200 years. Now they are widely cultivated as garden ornamental trees and sometimes bonsai in tropical areas. Lagerstroemia indica wood is hard and corrosion-resistant, and can be used as materials for farm tools, furniture and buildings. Bark, leaves and flowers are strong laxatives; Genpi decoction can treat hemoptysis, hematemesis and hematochezia.