Rhizome creeping, branched; stems slender, branched, high-climbing, or prostrate in absence of support, glab. to puberulous. Lvs membr., on slender petioles up to c. 4 cm. long; lamina broadly ovate-cordate to deltoid, acute to acuminate, (1)-2-4 × (1·5)-2-3-(4) cm., entire or sinuate; sinus broad, shallow. Peduncles terete or sts very narrowly winged; bracts ovate-cordate to suborbicular, apiculate, = subequal, broad-ovate, obtuse to subacute or sts apiculate sepals. Corolla (2.5)-4-5 cm. diam., white to pink. Ovary imperfectly 2-loculed; capsule ± 8 mm. long, broad-ovoid, apiculate. Seeds yellowish red.

2n = 22

Rhizomatous perennial with slender, much-branched, glabrous or puberulent, climbing stems. Petioles to c. 4 cm long, slender. Lamina (1)-2-4-(5) × (1.5)-2-3-(4) cm, broad-ovate to deltoid or reniform, entire or sinuate; base cordate, usually with shallow, broad sinus; apex acute to acuminate. Peduncles (3)-4-11 cm long, generally > lvs, terete or slightly winged. Bracts broadly ovate to suborbicular; base cordate; apex apiculate. Sepals similar to and < to somewhat > bracts. Corolla (2.5)-3-5 × (3)-4-6 cm diam., funnelform, usually white, sometimes pink. Ovary imperfectly 2-locular. Capsule 8-12 mm long, excluding apiculus, broad-ovoid. Seeds orange, smooth.