Arisaema lichiangense W.W.Sm.

Plants dioecious. Tuber renewed seasonally, brown outside, yellowish white inside, subglobose, 3–4.5cm in diam., usually with tubercles. Cataphylls 3, brown with purple dots, membranous, inner one 7–15cm, purplish brown with whitish spots. Leaf solitary; petiole purplish brown with some whitish dots, 20–37cm, basal 4–5cm sheathing into pseudostem; leaf blade 3-foliolate; leaflets sessile, sometimes shortly petiolulate, green, broadly ovate or subrhombic, subleathery, base broadly cuneate or rounded, margin entire, apex acute or abruptly acuminate; central leaflet 6–15 × 6.5–13cm; lateral leaflets smaller, 5.5–13 × 4.5–10cm, base oblique. Peduncle purplish brown with tiny whitish dots, shorter than petioles, 13–24cm. Spathe purple or purplish red, with whitish or greenish longitudinal lines, 7–10cm in total; tube broadly cylindric, ca. 2.5 × 1.3–1.5cm, throat margins slightly recurved; limb erect or slightly recurved, ovate-lanceolate, 3.5–4cm, apex long acuminate, with a connective whitish intramarginal line along distal part. Spadix unisexual; female zone subconic, ca. 10 × 6–7mm; ovary green, obconic; ovules 3, basal, erect; stigma sessile, disciform; male zone cylindric, 9–15 × 2–3mm; synandria of 1 or 2 stamens; anthers sessile or distal ones subsessile; thecae purple, globose, opening by an apical pore. Appendix whitish purple proximally, dark purple distally, 6–7cm (including stipe), base swollen, 3–4mm in diam., attenuate into stipe ca. 10 × 1mm.