Arisaema nepenthoides (Wall.) Mart.

Tuber depressed globose, 6–7cm in diam. Cataphylls, petioles, and peduncle reddish or greenish, densely covered with dark green, dark brown, or black irregular spots consisting of parallel striae. Cataphylls 3, to 25cm, obtuse at apex. Petiole to 90cm, basal 10–50cm sheathing, forming pseudostem; leaf blade digitate; leaflets 5(–7), glaucous abaxially, dull green adaxially, central leaflet with petiolule 2–3cm, lateral 2 leaflets sessile; central leaflet oblanceolate, 16–20 × 4–5cm; outermost leaflets 12–14 × 3–4cm, extremely oblique, narrowly cuneate at inner base, distinctly auriculate semiovate at outer side. Peduncle emerging from pseudostem, shorter or longer than petioles. Spathe tube yellowish with brownish or dark brown spots at both sides, cylindric, 3–8 × 1.2–2.5cm, throat broadly auriculate, auricles semiorbicular, to 2cm wide, outcurved; limb arching, yellowish with numerous black spots, triangular-ovate, 3–10 × 2–5cm, apex acuminate. Spadix unisexual; female zone cylindric, 2–2.5cm × 8–12mm; ovaries dense, green, obovoid; stigma yellowish; male zone ca. 1.5cm; synandria lax; anthers 1–3, violet, shortly stipitate; thecae globose, dehiscing by apical pores. Appendix erect, whitish green, cylindric, 6–8 cm × 4.5–5 mm, base truncate with stipe 5–7mm, middle part slightly constricted, apex obtuse. 2n = 26, 26 + 1B.