What kind of flower is this?

Lagerstroemia speciosa is a big tree of Lagerstroemia in Litchi family. Up to 25 meters; Bark gray and smooth; Columnar, glabrous or slightly covered with furry hairs. Leaves leathery, oblong-elliptic or ovoid, sparsely lanceolate, blunt or short at the top, and broadly cuneate to round at the base; Petiole is 6- 15mm long and stout. Flowers are reddish or purple, 5 cm in diameter, and the terminal panicle is 15-25 cm long; Pedicel length 1- 1.5 cm, floral axis, pedicel and calyx are covered with brown bran-like dense felt hairs. Calyx has 12 edges and is covered with bran-like hairs; Petals suborbicular to oblong obovate. Capsule spherical to obovate-oblong; There are many seeds, which are 10- 15 mm long. The flowering period is from May to July, and the fruiting period is10-165438+1October.