Syringa reticulata, the Japanese tree lilac,[1] is a species of flowering plant in the family Oleaceae.

The flowers are white or creamy-white, the corolla with a tubular base 0.16–0.24" (4–6 mm) long and a four-lobed apex 0.12–0.24" (3–6 mm) across, and a strong fragrance; they are produced in broad panicles 5–30 cm (2.0–11.8 in) long and 3–20 cm (1.2–7.9 in) broad in early summer.

The fruit is a dry, smooth, brown capsule (15–25 mm long), splitting in two to release the two winged seeds.

[2][3][4][5] Syringa reticulata is found in northern Japan (mainly Hokkaidō), northern China (Gansu, Hebei, Heilongjiang, Henan, Jilin, Liaoning, Nei Mongol, Ningxia, Shaanxi, Shanxi, Sichuan), Korea, and far southeastern Russia (Primorye).

[2][3][6] Chinese: 暴馬丁香; pinyin: Bào mǎ dīngxiāng; Japanese: ハシドイ (丁香花), romanized: hashidoi The Latin specific epithet reticulata means "netted".