Arisaema decipiens Schott

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