Herbs, stoloniferous, 15-60 cm tall. Petiole 5-50 cm, smooth, proximal 1/3 sheathing, sheath persistent; leaf blade mid-green, sometimes variegated, cordate to sagittate, 7-35 × 4-18 cm; midrib abaxially prominent, primary lateral veins 6-15 per side, entirely raised abaxially, nearly always raised adaxially toward midrib, marginally impressed, secondary venation arising mostly from midrib. Inflorescences 1-8 together; peduncle erect at anthesis, then deflexed, 6-20 cm. Spathe 3.5-12 cm, basal part green, narrowly ovoid, ca. 1/2 length of whole spathe limb, differentiated by an abrupt constriction, at female anthesis much inflated, creamy to pale greenish yellow, narrowing and turbinate, completely surrounding spadix and gaping ventrally or with margins loosely overlapping, conspicuously mucronate at apex, caducous immediately after female anthesis. Spadix ca. 3/4 length of spathe, narrowly hourglass-shaped; female zone ca. 1/2 length of spadix, obliquely inserted or partially adnate to spathe, 5-8 mm in diam., distally tapering; pistils congested, pale green, flask-shaped, ca. 1 × 0.5 mm, distally more widely spaced and subglobose; interpistillar staminodes few, white, clavate, taller than pistils; sterile zone absent; male zone ivory, narrowly obconic, ca. 1/2 length of female zone, distally 0.5-1 cm in diam.; anthers dumbbell-shaped, ca. 0.5 × 1 mm; appendix creamy yellow, bullet-shaped, basally somewhat wider than apex of male zone; appendix staminodes columnar, irregularly polygonal, ca. 0.5 mm in diam. Fruiting spathe declined, urceolate. Fl. Jun.