About Syringa reticulata (Blume) H.Hara
Syringa reticulata (Blume) H.Hara is a deciduous small tree, and the largest known lilac species. It is also the only lilac that regularly grows as a small tree rather than a shrub. It typically reaches 12 m (39 ft) in height, rarely growing as tall as 15 m (49 ft). Its trunk usually grows up to 30 cm (12 in) in diameter, and rarely reaches 40 cm (16 in) in diameter.
Its leaves are elliptic-acute, with entire margins. They measure 2.5โ15 cm (0.98โ5.91 in) long and 1โ8 cm (0.39โ3.15 in) broad, with a roughish texture and slightly impressed veins.
Its flowers are white or creamy-white, with a strong fragrance. The flower corolla has a tubular base 4โ6 mm (0.16โ0.24 inches) long, and a four-lobed apex 3โ6 mm (0.12โ0.24 inches) across. The flowers grow in broad panicles that measure 5โ30 cm (2.0โ11.8 in) long and 3โ20 cm (1.2โ7.9 in) broad, and are produced in early summer.
Its fruit is a dry, smooth, brown capsule 15โ25 mm long, which splits in two to release two winged seeds.
This species occurs in northern Japan (mainly Hokkaidล), northern China (including Gansu, Hebei, Heilongjiang, Henan, Jilin, Liaoning, Nei Mongol, Ningxia, Shaanxi, Shanxi, and Sichuan), Korea, and far southeastern Russia (Primorye).