Dioecious climber, 0.5-1.0 m high; stems solitary, erect; tuber with conical crown, 3-5 finger-like processes spreading from below and annually renewed. Leaves spirally arranged, petiolate, lanceolate with basal auricles, up to 13 x 3.5 mm, 5-7-veined, apex cuspidate, margins entire. Male inflorescences: axillary, racemes of 1-3-flowered cymes, ± 70 mm long, ± erect. Male flowers: perianth segments 6, green, oblong; filaments ± 1 mm long; anthers 0.5 mm long; pistillode ± 1 mm long. Female inflorescences racemose, 40-50 mm long. Female flowers: perianth segments oblong, green with hyaline margins; staminodes rudimentary, adhering to base of tepal; ovary ± 5 mm long; stigmatic surfaces bilobed. Flowering time Dec., Jan. Fruit a capsule, 20 x 25 mm.
Folia alterna; lamina glabra, elongato-lanceolata, basi rotundata vel ad petioli insertionem parum cuneata, apice sensim acuminata, ± apiculata apiculo usque 3 mm longo, ±7 cm longa et ±13 mm lata, 7-nervata, nervis extremis basi furcatis; petiolus usque 1 cm longus. Racemi simplices, axillares, 4-6 cm longi, numerosi, peduneulati, Flores subsolitarii vel fasciculati, fasciculis 1-3-floris non raro stipitatis (l-5 mm). Pedicelli 0-4 mm longi. Perianthium infundibuliforme; segmenta ± elougata, crassiuscula, fusco-rubra, apice pallide luteo-fusca, glabra, obtusiuscula, 2-3 mm longa. Stamina 6, perianthio breviora, satis magna. Antherae minutae.