Tuber depressed globose, 1-1.5 cm in diam. Leaves 1-3; petiole green or purple, 12-25 cm; leaf blade greenish or purple abaxially, green adaxially, cordate-oblong, cordate-ovate, or cordate to sagittate, 4-25 × 2-7.5 cm, base deeply cordate, apex long acuminate; primary lateral veins 9 or 10 per side; bulbils present at basal part of petiole and at base of leaf blade (apex of petiole), ovoid. Inflorescence including peduncle shorter than petioles, 3.7-18 cm. Spathe green, purplish yellow, or violet, constricted, 4-7 cm; tube 1-1.3 × 1-1.3 cm; limb erect or slightly incurved, elliptic, 3-4.5 × 1.2-3 cm, apex obtuse or acute. Spadix 9-23 cm; female zone (0.8-)1-1.2 cm, adnate to spathe; female flowers densely arranged; pistil ca. 2.5 mm; ovary ellipsoid-oblong, ca. 2 × 1 mm; style short, ca. 0.3 × 0.5 mm; stigma disciform, 0.6-0.7 mm in diam.; sterile zone between female and male flowers 7-8 mm; male zone 5-7 mm; thecae elongate, ca. 1.8 mm, opening by a slit; appendix violet-green, tortuous, 6.5-20 cm. Berries ovoid. Fl. Mar-Jun, fr. May-Sep. 2n = 26*, 72*.
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