Plants perennial, erect. Stems dark green, cylindric, 40-80 cm tall, 1-2 cm in diam., rooting at nodes; internodes 2-3 cm, at distal part 5-10 mm; cataphylls early caducous, broadly linear, 4-7 cm, apex abruptly acute. Leaves usually 5 or 6, densely crowded at stem apex; petiole green, 6-15 cm, proximally sheathing; leaf blade initially involute, afterward spreading, pale green abaxially, dark green adaxially, ovate-oblong, 10-25 × 5.5-11 cm, thinly leathery, base truncate-rounded, subcordate, or decurrent, apex caudate-acuminate or abruptly long acuminate; primary lateral veins 6-8 per side, ascending and arching. Peduncle green, 2-6 cm. Spathe initially involute-tubular, afterward opening by a slit, cymbiform, ovoid, 3-4.5 × ca. 1.3 cm. Spadix 2.5-4.5 cm, slightly longer than or equaling spathe; female zone ca. 5 mm; ovary globose; ovule basal; stigma sessile, circular; male zone 2-3 cm; stamens 4; anthers 2-celled. Berry oblong, 12-18 × 7-10 mm. Seed oblong, 11-15 mm. Fl. Apr-Jun, fr. Sep-Oct.
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