genus Philadelphus - mock orange: type and sole genus of the subfamily Philadelphaceae; sometimes placed in family Saxifragaceae

philadelphus - any of various chiefly deciduous ornamental shrubs of the genus Philadelphus having white sweet-scented flowers, single or in clusters; widely grown in temperate regions

dicot genus, magnoliopsid genus - genus of flowering plants having two cotyledons (embryonic leaves) in the seed which usually appear at germination

family Oleaceae, Oleaceae, olive family - trees and shrubs having berries or drupes or capsules as fruits; sometimes placed in the order Oleales: olive; ash; jasmine; privet; lilac

lilac - any of various plants of the genus Syringa having large panicles of usually fragrant flowers