Liana, appressed-pubescent. Leaves: petiole 8–12 mm long; lamina lanceolate or oblanceolate, 4–13 cm long, 2–4.5 cm wide, acute or sometimes obtuse at base, acuminate or acute at apex, glabrous above, sparsely pubescent below; secondary veins 8–12 pairs. Pedicel 5–7 mm long, pubescent; bracts 1–2 mm long. Sepals deltoid, 2.5–3 mm long, 2.5–3.5 mm wide, 1.5 mm thick near base, pubescent outside, flat and glabrous inside. Petals pinkish orange; outer petals 20–25 mm long, 8–8.5 mm wide, densely appressed-pubescent outside, tomentellous inside, grooved and glabrous at base; inner petals 6.3–7 mm long, 3.8–4.2 mm wide, puberulous outside near the rostrate apex, tomentellous on cohering insides, grooved and glabrous at base. Stamens 130–140, 1.2-1.6 mm long. Carpels c. 15; ovary 0.7–0.75 mm long; ovules 3 or 4; style 0.7–0.75 mm long. Apocarps to 1.5 cm long and 1 cm wide (dry), pink-orange; stipe 6–7 mm long. Seeds lenticular, smooth.
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