Syringa vulgaris L.
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.
Species Description - Shrub to 6 m; lvs ovate, 5–10 cm, short-acuminate, truncate to cordate at base; infls 1–2 dm; cor lilac (white), 1 cm wide; 2n=44–48. Native of se. Europe, persisting indefinitely after cult. and often appearing spontaneous, especially in regions of abandoned farms. May.