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Leaves 3.5–6 × 0.9–1.3 cm, elliptic-lanceolate to lanceolate, acute apiculate at the apex, attenuate at the base, entire on the margins, pubescent to glabrescent, midrib prominent beneath.
Hermaphrodite flowers heterostylous; perianth white with lobes tinged pink outside; tube 1.5–2 mm long, puberulous outside; lobes 4–7 × 3 mm long, ovate-elliptic to oblong-elliptic.
Ovary 0.5–1 mm long; style connate in the lower c. 2 mm, 3-branched; style of long-styled flowers 4–6.5 mm long; style of short-styled flowers (1)1.5–2.5(3) mm.
Nut reddish-brown when mature, 7–9 × 4–5 mm, ovoid-trigonous, longitudinally striate, unwrinkled or very irregularly wrinkled, puberulous.
Ocrea reddish-brown, 0.8–1.3 cm long, truncate with a fringe of brownish setae 3–7 mm long at the apex, ± pubescent.
Stems annual, reddish-brown, 8–35 cm long, longitudinally striate, leafless at the base, ± pubescent.
An erect or ± decumbent perennial herb with many stems from a thick woody rootstock.
Filaments 2–5 mm long; anthers 0.9–1 × 0.35–0.4 mm.
Male flowers not seen.
