Glabrous, twining perennial. Leaves lanceolate, c. 3 cm long; the bases joined by a line. Flowers sweetly scented, in short axillary or terminal cymes. Calyx 5-partite. Corolla funnel-shaped, 5-lobed, c. 2 cm long, yellow. Near Hornsby. Garden escape. Introd. from N. and Central America