Plants dioecious. Tuber globose, small, 1-2 cm in diam., shortly stoloniferous. Cataphylls 3, brownish purple with tiny black striae, to 18 cm, apex obtuse. Leaf solitary; petiole greenish with some grayish spots, 20-30 cm, proximal 1/3 sheathing into pseudostem; leaf blade pedate; leaflets (7-)9-15, sessile, oblanceolate or oblong, base attenuate, margin entire or erose, apex acuminate; central leaflet usually larger than or equaling lateral ones; lateral leaflets 10-12 × 2.5-3.5 cm, outermost ones 1.5-4 × 0.3-1.5 cm. Inflorescence emerging before leaf; peduncle grayish green with whitish spots, shorter than petioles, 12-25 cm. Spathe 7-12 cm in total; tube green or pale brown, densely flushed with dark purple or dark brown spots, narrowly cylindric, 4-6 cm × 7-15 mm; limb deeply 3-lobed; lobes green or purple, often flushed with dark purple or black spots on back; lateral lobes oblong or oblanceolate, 20-25 × ca. 7 mm, spreading into auricles at tube throat; central lobe ovate to elliptic, 2-3 × 1.4-1.8 cm, base constricted, apex acuminate, incurved. Spadix unisexual; female zone conic, 12-15 × 6-7 mm; ovaries dense, green, ovoid; stigma subsessile; male zone 1.5-2 cm, slender; synandria lax; anthers sessile, violet, globose; thecae dehiscing from apical pore. Appendix sessile, ascending, sigmoid, dark violet, flagelliform to filiform, 7-12 cm, 1-2 mm in diam. in basal part. Infructescense subglobose. Berries red. Fl. Apr-Jun.
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