Plants dioecious. Tuber globose, 1-1.5 cm in diam. Cataphylls 2 or 3, ca. 5 cm, membranous. Leaf solitary; petiole 10-30 cm, slender, base forming short pseudostem; leaf blade pedate; leaflets (5-)7, sessile, light greenish, oblong, 7-10 × 1.5-3 cm, membranous, base broadly cuneate, apex acute to abruptly acuminate. Inflorescence emerging before leaf unfolds; peduncle 3-10 cm, slender. Spathe basically purplish; tube cream-colored, outside stained with purplish, inside dark purple, funnelform, 3-3.5 × 1-1.4 cm, throat margins broadly expanded to limb; limb broadly cordate, ca. 6 × 4 cm, apex acuminate and involute, surrounding spadix appendix. Spadix unisexual; female zone ca. 1 cm; ovary fusiform; male zone ca. 1 cm × 3 mm, shortly stipitate; synandria consisting of 2 anthers, thecae globose, dehiscing by apical pores. Appendix sessile, 15-27 cm, proximally fusiform, to 4 mm in diam., distally upright, exserted through involute apex of spathe limb, filiform. Fl. Apr.
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