Echites laxa Ruiz & Pavon, Fl. Peruv. 2: 19, pl. 134. 1799; Mandevilla suaveolens Lindley.

Branchlets glabrous. Petiole long; leaf blade narrowly cordate, herbaceous, glabrous adaxially, glaucous and bearded at vein axils abaxially, apex acuminate. Racemes long pedunculate, nodding, simple, many flowered. Flowers fragrant. Sepals narrow, 0.7-1.3 cm, acute. Corolla white or pale pink, limb 10-folded inside; lobes oblong, undulate at margin, apiculate. Filaments broad, pubescent, much shorter than glabrous anthers; disc apex obtuse or truncate, glabrous.

Cultivated for medicine.

S Guangdong [native of Argentina]