Slender twiner; stems to 10 m long; young branches minutely pubescent, glabrescent. Leaves: petiole 1–2.5 cm long; lamina oblong-triangular or sagittate, 7–15 cm long, 2–5 cm wide, ± glabrous on both surfaces; base cordate to sagittate; apex acuminate. Flowers leaf-opposed, solitary or in elongated axillary 2-or 3-flowered racemes. Calyx green to greenish yellow with maroon veins, puberulent outside; utricle 8–13 mm long; tube 16–22 mm long; lobes erect, remaining joined together at apices, semi-circular, 10–12 mm long, yellow inside; apex filiform, 5–7 mm long. Fruit elongate-ovoid, 4–5.5 cm long, c. 2.5 cm diam. Seed not seen.
Home