Rhizome cylindric, to 9 × 2.5 cm. Cataphylls 3 or 4, yellowish purple with dark brown or whitish spots, 2-15 cm. Leaves 2; petiole greenish or reddish with dark green or dark purple spots, 15-90 cm; leaf blade pedate, palmate; leaflets (3-)5-7, petiolulate, greenish and sometimes with purple spots abaxially, dark green adaxially, narrowly oblong to elliptic, base cuneate, apex acuminate; central leaflet with petiolule developed to 5 cm, blade 8-18 × 3-8 cm; outermost leaflets 5-6 × 1.5-2 cm. Spathe green, usually with dark purple dots; tube cylindric, white toward base, 4-6 × 1.5-2 cm, throat obliquely truncate, slightly outcurved; limb deep green, lanceolate to ovate-lanceolate, 4-9.5 × 3-3.5 cm, apex acuminate and caudate, tail 6-10 cm, curved forward. Spadix unisexual; female zone conic, 1.5-2 cm, 7-13 mm in diam. at base; ovary green, bottle-shaped; stigma sessile, purple; male zone 2-2.5 cm; synandria lax; anthers 2 or 3; thecae dehiscing by lateral slits. Appendix erect, green, usually with dark purple dots, terete, 5-7 × ca. 0.7 cm, rugose or echinate, base stipitate, apex rounded. Berries red. Seeds 1-3, obovoid, ca. 5 mm. Fl. Sep-Jan.
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