Tuber depressed globose, 2-2.5 cm in diam., stoloniferous. Cataphylls 3, 10-20 cm, membranous. Cataphylls, petiole, and peduncle green, occasionally purplish, unmarked. Leaf solitary; petiole 20-70 cm, basal 15-40 cm sheathing into pseudostem; leaf blade radiate; leaflets 11-14, sessile, narrowly elliptic, base cuneate, apex acuminate and caudate. Peduncle shorter than petioles, 20-50 × 1.2-1.4 cm. Spathe purple or dark purple, with numerous white stripes, or green; tube cylindric, 4-5 × 1-1.2 cm, throat obliquely truncate, not auriculate, ciliate; limb suberect to incurved, narrowly lanceolate, 4.5-5.5 × 2.1-4 cm, apex long acuminate and caudate with violet filiform tail 2-5 cm. Spadix unisexual; female zone conic, ca. 1.5 cm, ca. 7 mm in diam. at base; ovary green; style conic; stigma purple, punctate; male zone narrowly conic, 2-3 cm, ca. 3 mm in diam. at base; synandria lax, shortly stipitate; anthers 2 or 3, yellow, dehiscing by apical pores. Appendix erect, violet, occasionally greenish, cylindric, 3.2-5.5 cm × 3-4 mm, gradually narrowed to base, apex obtuse and verrucose, with acute neuter flowers on proximal part. Infructescence nodding. Fl. Jun.
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