Syringa odorata is a small or large deciduous tree with a height of 4-10 meters and a maximum length of 15 meters. The color of bark is purplish gray brown. And lilac is bush or small arbor, the height is about 5 meters, the color of bark is grayish brown or gray.
The leaves of Syringa fulva are broadly ovate, ovate to elliptic ovate or oblong lanceolate. The apex is short and the tail is pointed to the tail shape. The base is oblong or wedge-shaped. The color above is yellow green, and the color below is light yellow green. The leaves of lilac are leathery or thick paper, oval to kidney shaped, short convex and long pointed at the apex, heart-shaped at the base and nearly round, dark green at the top and light green at the bottom.
The color of the corolla of Syringa odorata is white, in the form of spokes and ovate lobes. And the color of lilac corolla is purple, the lobes are oval, elliptical to obovoid.
The fruit of Syringa oblong, smooth or with small pores. The fruit period is from August to October. The fruit of Syringa oblong or oval to long oval, very smooth surface. The fruit period is from June to October.
