Large robust plants with thick fleshy rhizome; sap milky. Stem thick, in mature plants trunk-like, to 5 m × 30 cm, with leaf scars, lower part often lying along ground. Leaves large; laminae ovate-sagittate, cuspidate, to 75 × 50 cm, erect, entire, leathery, deep shining green, or green with white patches, veins prominent below, margins often ± undulate, basal lobes obtuse, rounded; petioles to 1.2 m long, lower half sheathing, light green with brown or purple speckles. Spathe with basal cylindric pale green tube c. 7 cm long, limb expanded, boat-shaped, bluish-green to yellowish, to 15 cm long; peduncle terete, to 20 cm long. Spadix fragrant, ± = spathe; basal female zone to 3 cm long, narrower sterile zone 3.5 cm long, upper male zone 5-6 cm long, terminal appendage 5-6 cm long, thick, obtuse, light creamy-yellow to orange. Berry scarlet or orange, glossy, ± 1 cm diam., 1-4-seeded.