Perennial; stems ± pilose, trailing, up to 1.8 m. long.. Leaf-blade ovate-orbicular or reniform, 5.5–7.8 cm. long, 5.4–7.8 cm. wide, rounded but apiculate at the apex, cordate with a broad sinus at the base, glabrous or pubescent above, ± hairy or glabrous on veins beneath; petiole 5–7.5 cm. long.. Peduncle (1–)3(–6)-flowered, 1–7 cm. long, hairy; pedicels up to 2.6 cm. long; bracts broadly ovate, acute or acuminate, 0.9–1.8 cm. long, 0.7– 1.8 cm. wide.. Outer sepals pilose, ovate, 1.2–1.6 cm. long, 1 cm. wide, cordate below or broadly expanded but rounded, tapering above; inner sepals narrower, 1.5 cm. long, 0.6 cm. wide.. Corolla pale lilac with a dark centre or white, funnel-shaped, 3.3–4.5 cm. long, glabrous or pubescent.. Capsule globose, 8–12 mm. in diameter, glabrous.. Seeds glabrous or velvety pubescent, 4 mm. long.