Strong woody twiner; stems pubescent or glabrescent, yellow, ridged.. Leaf-blade broadly ovate to suborbicular, 6.5–11 cm. long, 6–14 cm. wide, obtuse, shortly acuminate or rounded at the apex, deeply cordate-emarginate at the base, glabrous or slightly pubescent, particularly on theveins beneath, strongly punctate beneath; petiole 2–8 cm. long.. Inflorescences axillary (1–) 2–several-flowered; peduncle usually very short, about 5 mm. long; pedicels up to 2.5 cm. long.. Sepals oval, about 1.5–2 cm. long and 1 cm. wide, the outer shorter than the inner, ± emarginate but mucronate, glabrous.. Corolla bright scarlet with paler tube, funnel-shaped, 5.5–7 cm. long; midpetaline areas pubescent at the apex.. Capsule globose, straw-coloured, 1.8 cm. in diameter.. Seeds subglobose, brown, shortly pubescent, 6 × 7 × 5 mm.
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