Arisaema austroyunnanense H.Li

Tuber globose, 1–2cm in diam. Cataphylls green, acute. Leaf 1; petiole green, proximally sheathing into pseudostem; leaf blade 3-foliolate; leaflets glaucous abaxially, green adaxially; central leaflet with petiolule ca. 15mm, blade ovate or ovate-oblong, 8–10 × 2.8–6cm, base obtuse, apex abruptly acuminate; lateral leaflets with petiolule 3–5mm, blade ovatelanceolate, 9–10 × 4.8–5cm, base rounded, oblique, apex acuminate. Peduncle as long as petioles, slender. Spathe small, ca. 6.5cm in total; tube pale green, funnelform, ca. 2.8cm, throat ca. 1.5cm in diam., margins obliquely truncate, not auriculate; limb erect, dark green, ovate-lanceolate, ca. 3 × 1.5cm, apex acuminate with a short tail at tip, base slightly constricted, with a white ca. 5mm high basal zone. Spadix unisexual. Male spadix slender; male flowers sparse; synandria of 2–4 stamens, subsessile; thecae subglobose, opening by an apical slit; appendix erect, ca. 2.2cm, slender, with several scattered, short, subulate neuter flowers from base to apex; neuter flowers less than 1mm. Female spadix unknown.