Morphological characteristics of Lagerstroemia speciosa

Lagerstroemia speciosa is a shrub variety of Lagerstroemia speciosa, which has no obvious trunk and is in a tufted state. Compared with Lagerstroemia speciosa, it is short, mainly ornamental flowers, with smooth branches and peeling bark in autumn and winter. Branchlets slightly quadrangular. The leaves are opposite or nearly opposite, oval, entire, sharp at the apex, wide and round at the base, smooth and hairless on the surface, and hairy on the back of the leaves along the midvein. The flowers are conically clustered at the top of the branches, and the perianth is shriveled, bright red, pink or white. The flowering period is from July to September. The new fruit is oval, 65438-065438 ripens in February. This tree has a graceful posture, curved branches and bright colors.

The native species (Lagerstroemia indica) is deciduous shrub or small tree, which can reach 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.