Plants dioecious. Tuber subglobose, 1.8-2 cm in diam. Cataphylls not seen. Leaf solitary; petiole 24-30 cm, glabrous, proximal 5-7 cm sheathing into pseudostem; leaf blade 3-foliolate; leaflets subsessile, green with purple margins, glabrous, margins subcrenulate or crenate; terminal leaflet elliptic, ca. 11 × 4-6 cm, base cuneate, apex acuminate; lateral veins 12-15 per side, collective vein 0.5-1.5 mm from margin; lateral leaflets lanceolate, oblique, ca. 11 × 3.3-3.5 cm, base cuneate, apex long acuminate. Peduncle shorter than petioles, 12.5-16 cm. Spathe suberect, 12-13 cm; tube brown with whitish stripes, obconic, 4.5-5 × 1.7-2 cm, throat margins obliquely truncate, slightly recurved, not auriculate; limb slightly incurved, dark brown with whitish stripes, oblong, 7.5-8 × 2.4-3 cm, base not constricted, apex acuminate with white reticulate stripes. Spadix unisexual; male zone cylindric, 1.3-1.7 cm; synandria lax, stipitate; filaments 1.5-2 mm; anthers 2-4, dehiscing by horseshoe-shaped slits; appendix distally curved, cylindric, ca. 6 cm in total, proximal 2.5-3 cm suberect, ca. 3 mm in diam., abruptly swollen toward base, base conic, 4-5 mm in diam., truncate, with stipe ca. 4.5 × 1.3 mm, apex attenuate, obtuse. Female spadix unknown. Fl. Jul.
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