Perennial liane up to 6 m.; stems glabrescent or sparsely adpressed pubescent.. Leaf-blade thin, ovate or broadly elliptic or orbicular, acute, 5.5–19 cm. long, 6–14 cm. wide, shortly acute or acuminate at the apex, rounded or slightly cuneate at the base, glabrescent or scaly above, almost imperceptibly adpressed pubescent to pilose beneath; petiole 1.6–8.5 cm. long, adpressedly pubescent.. Flowers several in a dense cyme; peduncle up to 21.5 cm. long, pubescent; bracts lanceolate, pubescent, 1.4–1.7 cm. long, 2–3 mm. wide.. Sepals linear-lanceolate, acute, 8.5–16 mm. long, 1.5–2.5 mm. wide, shortly adpressed pubescent.. Corolla rose or purple, narrowly funnel-shaped, 4–7 cm. long, with midpetaline areas sparsely pilose.. Capsule ovoid, 1.4 cm. long.. Seeds subglobose, 5 mm. long, 4 mm. wide, covered with brown hairs about 1 cm. long.
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