Liana with stout spines on older stems. Tendrils are modified inflorescences (axes) and develop as leaf-opposed, simple ± 2-dimensional recurved, closed, clip-like hooks c. 7–15 mm long (Zich et al. 2020). Shoots appressed-pubescent, glabrescent; branchlets glabrous. Leaves distichous, glabrescent; petiole 3–8 mm long; lamina elliptic, 6–20 cm long, 2.2–6 (–7.5) cm wide, shortly attenuate at base, acuminate at apex; secondary veins mostly 5–8 pairs. Flowers solitary, fragrant; pedicel 12–15 mm long, appressed-pubescent; bracts ovate, 1 mm long. Sepals ovate, (4–) 5–7.2 mm long, 3.5–5.5 mm wide, recurved at tip, puberulous. Petals 3 + 3 in two whorls, narrowly ovate, 2–3 mm thick, greenish often with whitish base. Outer petals 12–18 mm long, 5.8–8 mm wide; suprabasal portion recurved; tip incurved or not. Inner petals 11–17 mm long, 5–6 mm wide; suprabasal portion reflexed; tip incurved or not [the inner petals may be fused at their apices forming an arch over the centre of the flower (Zich et al. (2020)]. Stamens c. 90 (35–40, fide Zich et al. 2020), 2–2.5 mm long; connective tip conical. Carpels 9 (6, fide Zich et al. 2020), glabrous; stigma kidney-shaped, adaxially grooved. Apocarps club-shaped to obovoid, (3–) 3.3–4 cm long, (1.6–) 2–2.3 cm wide, apiculate, yellow-orange.
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