BIGNINIACEAE, Trumpet-creeper Family

Trees, shrubs, and vines; leaves opposite or whorled; flowers large, hypogynous, bisporangiate, clustered; calyx of united sepals; corona showy, campanulate or funnelform, 5-lobed, sometimes 2-lipped; fertile stamens 4 or 2, on the corona; 1-3 staminodes sometimes present; carpels 2, united; style 1, stigma 2-lobed; ovary 2-loculed; placentae central; fruit an elongate capsule; seeds flat, winged.