Suffrutescent vines with quadrangular stems narrowly winged; young stems and petiole sparsely strigose to glabrous in the older stems, the hairs to 0.5 mm long. Leaves elliptic, the blades 6-15 cm long, 2.5-7.5 cm wide, chartaceous, apically attenuate to acuminate, basally rounded to obtuse, ciliate, the upper surface sparsely strigose, the lower surface sparsely strigose at veins only, the petioles to 4.5 cm long. Inflorescence axillary, the pedicels one per axil, 1.75-3.0 cm long, the bracts green, oblong lanceolate, mostly glabrous, 1.5-3.0 cm long, 1.0-1.75 cm wide, mucronate at the tips and rounded bases. Flowers with the corolla white with purplish throat, 4-5 cm long, glabrous, 5-lobed, lobes 5-6 mm long, obtuse. Fruit irregularly obovate, 1.5 cm long, puberulent.
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