Or syringa; Deciduous shrub of the genus Philadelphus, family Philadelphaceae, including P. coronarius, which has white, strongly scented flowers, resembling those of the orange.
The common mock orange P. inodorus is native to the S US.
Large hardy shrub with showy and strongly fragrant creamy-white flowers in short terminal racemes; SYN. syringa, Philadelphus coronarius.