Xanthosoma panduriforme E.G.Gonç.

Small to medium sized herb, up to 90 cm tall, stem hypogeous erect, up to 6 cm diam., sparsely covered by fibers, very few cormels or stolons; Leaves 3-5 per plant, petioles 22-64cm, blackish green, strongly waxy to the apex, sheath rarely reaching the basal 1/2, sheath margins involute, free portion cylindrical to slightly flattened adaxially; leaf blade pandurate and strap-line, 35-44 x 1.5-8 cm, irregular, sometimes strongly oblique, sometimes erect, blackish green, semi glossy adaxially, whitish and matte abaxially, primary lateral veins 3-5 per side, almost invisible, arising at an angle of 45-70°, apex long acuminate; basal lobes asymmetric, basal rib lacking or purely vestigial, sometimes subhastate, apex rounded. Inflorescences not seen.