Morphological characteristics of Japanese red-leaf tree Lagerstroemia indica.

Small deciduous trees or shrubs in Japan, 3-6 meters high; The bark is brown and smooth; Branchlets are slightly quadrangular and usually have narrow wings. The leaves are opposite or nearly opposite, the upper part is alternate, oval to obovate, 3-7 cm long and 2.5-4 cm wide, the midvein on the back is nearly hairless or hairy, and the stalk is short. Panicle terminal, glabrous; Flowers are reddish, purple or white, about 2.5-3 cm in diameter; Calyx hemispherical, 8- 10 mm long, green, smooth, hairless, 6-lobed at the top; Petals 6, suborbicular, wrinkled, with irregular notches at the edge and long claws at the base; Stamens are numerous, born at the base of calyx tube, usually 6 outer wheels are longer; The ovary is superior. Capsule nearly spherical, 6-valved, about 65438 0.2 cm in diameter, with persistent calyx at the base; Seeds have wings.