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Leaves petiolate, dark green above, paler beneath; lamina 7.5–10 × 4.5–6 cm, obovate to broadly ovate, obtuse or shortly acuminate at the apex, attenuate at the base and decurrent on the petiole, with the midrib prominent beneath, entire or slightly wavy on the margin, glabrous on both surfaces, gland-dotted beneath; petiole 1–2 cm long.
Flowers pedicellate, 2–4 in the axils of bracts, arranged in elongated spiciform terminal racemes up to 36 cm long; bracts 4–5 mm long, truncate but produced dorsally into an acute setose apex, with or without a terminal fringe of short setae up to 1 mm long; pedicels red-brown, 6–7 mm long, glabrous.
Hermaphrodite flowers heterostylous, long-styled flowers not seen; perianth yellowish-green, glabrous, 5-lobed; tube 2–3 mm long; lobes 3–4 mm long, oblong.
Stems several from the rootstock, up to 1 m long, prostrate or spreading, longitudinally striate, glabrous or sparsely papillate.
Filaments 0.3–3.5 mm long, filiform and flattened toward the base; anthers orange, 0.5–0.55 × 0.4–0.45 mm, oblong.
Nut 8–10 mm across, trigonous, with a spine on each angle; spines 2–3 mm long, pointing somewhat downwards.
Ocrea brown, 0.5–2 cm long, glabrous outside, truncate with a terminal fringe of 7–9 setae 1–3 cm long.
A robust perennial herb, sometimes bushy, with a rootstock.
Ovary 3.4 × 2.3 mm, oblong; styles c. 1 mm long.
Male flowers not seen.
