Tuber depressed globose, 1-1.3 cm in diam. Leaves 1-3; petiole 5-15 cm, slender, base sheathing; leaf blade entire, ovate, oblong, or oblong-lanceolate, 5-19 × 1.5-6 cm, base obtuse, rarely shallowly cordate, apex shortly acuminate to acute; primary lateral veins 6 or 7 per side. Inflorescence including peduncle shorter than petioles; peduncle 6-10 cm. Spathe constricted, (6-)7-9 cm; tube 0.8-1.2 cm; limb curved, lanceolate, 7-8 cm, apex long acuminate. Spadix 8-12 cm; female zone 5-10 mm, adnate to spathe; female flowers densely arranged; pistil 0.8-0.9 mm; ovary ovoid, ca. 0.6 × 0.4 mm; style distinct, ca. 0.3 mm; stigma subhemispheric, ca. 0.18 mm in diam., broader than style; sterile zone between female and male flowers 5-10 mm; male zone 5-10 mm; thecae elongate, ca. 0.7 mm, opening by a long slit; appendix pendulous, incurved, filiform, 4-9 cm. Berries pale green to whitish, ovoid. Fl. Sep.
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