Arisarum

Terrestrial herbs arising from tubers or stolons, rarely from a slender rhizome. Leaves basal; sheathing base usually underground; petiole slender, 3–17 cm long, lamina sagittate-hastate to ovate, 3.5–14.0 cm long, 2.5–7.0 cm wide, venation reticulate, primary veins joining a conspicuous submarginal vein. Inflorescence borne on an axis shorter than to longer than leaves; bract cylindric to subglobose, margins connate along most of their length, 4.0–8.5 cm long, green, greenish-brown or purplish, often striped, ± white at base, apex apiculate, bent forward, sometimes drawn out into a whip-like appendage; inflorescence axis 2–6 cm long, dull green, brownish or off white; flowers cream, often purplish at base, female flowers at the base of the axis, male flowers in central portion of axis, axis terminating with a sterile globose appendix. Flowers with perianth absent. Fruit a green berry, often slightly purple, 5–6 mm long.