Deciduous woody vine. Leaves sessile; blade ovate, up to 18 cm long and 5 cm wide; upper surface matt green, glabrous; lower surface glaucous-green, more or less glabrous with patches of domatia in axils of midvein; tip long-pointed; base cordate to rounded. Flowers 40-70 mm wide; corolla white or pale pink, highly fragrant. [M. suaveolens Lindl.]

Argentina, Bolivia

A large number of cultivars of this species is known, differing mainly in flower colour.

The hybrid M. ×amabilis hort. is also available in a range of forms, for example, M. 'Alice du Pont' (see entry under Cultivar tab).

M. splendens (Hook. f.) Woodson from Brazil is an evergreen wiry to woody vine. Leaves stalked; blade broadly elliptic, up to 8 cm long and 7 cm wide, upper surface glossy green, glabrous; lower surface pale green, glabrous; tip acute to shortly longpointed; base cordate to rounded. Flowers 80-100 mm wide; corolla cream, pink or red. [Dipladenia splendens (Hook.f.) A. DC., M. sanderi auct. non (Hemsl.) Woodson, Dipladenia sanderi auct. non Hemsl.]

Source: Forster, P. (2002). Apocynaceae. In: Spencer, R.. Horticultural Flora of South-eastern Australia. Volume 4. Flowering plants. Dicotyledons. Part 3. The identification of garden and cultivated plants. University of New South Wales Press.