Amydrium hainanense (H.Li, Y.Shiao & S.L.Tseng) H.Li

Stem cylindric, 3–4mm in diam.; internodes 2–3cm. Petiole 20–30cm, on juvenile branch only 4–5cm; sheath reaching base of leaf blade, base amplexicaul, marcescent; leaf blade green, after drying dark brown, ovate-lanceolate or falcate-lanceolate, 13–15cm on juvenile branch, on mature branch blade large, 28–35 × 9–12cm, papery, base rounded or subcordate, margin entire, apex abruptly acuminate; lateral veins 5–7 pairs, ascending and arched, each side along midrib with some large and some small perforations; perforations ovate or oblong, 4–6 × 1.5–4cm, sometimes reaching margin and midrib of leaf blade. Inflorescence solitary; peduncle dark brown when dry, cylindric, 8–10cm. Spathe yellow-red, broadly cymbiform, 8–5 × 8–9cm, apex shortly rostrate. Stipe of spadix 8–10mm; spadix cylindric, ca. 6 × 1.3cm. Stamens 6, shorter than ovary during female anthesis but filaments extending at male anthesis to bring thecae above pistils; filaments flat; anthers longitudinally dehiscent. Ovary hexagonal-cylindric, ca. 3 × 2.5mm, apex truncate; stigma sessile, longitudinally oblong, 1-loculed, 2-ovuled; ovules anatropous with short funicle, inserted on lower part of placenta.