Shrub to 1 m high, often smaller; roots with tubers. Stem internodes 2-ridged. Leaves: petiole 2.5–6 mm long, decurrent with stem ridges; lamina oblanceolate or narrowly obovate, 6–22 cm long, 1.5–5.5 cm wide, attenuate at base, acuminate, glabrous above, very sparsely pilose below with simple and dendritic hairs, glabrescent; secondary veins 10–14 pairs. Flowers terminal, solitary; peduncle c. 0.5 cm long above uppermost foliaceous bract. Floral envelope cap conical with attenuate tip, splitting irregularly. Stamens ovate, oblong or obspathulate, 3.5–6.5 mm long, 1.2–2.5 mm wide near base; anthers 1.8–3 mm long. Anther thecae and upper margins of stamens and outer staminodes with densely entangled, dendritic hairs, 0.5–1 mm long, hyaline. Outer staminodes membranous, ovate, 6–7 mm long, 3.5–4 mm wide. Inner staminodes fleshy, oblong, 5–7 mm long, 2.5–4 mm wide, with shortly stipitate glandular hair tufts on adaxial surface. Aggregate fruit obconical, 1.5–2 cm diam., green.
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