Colocasia (kol-oh-kay-see-uh); Elephant’s Ear; Arum Family (Araceae). Tuberous-rooted tender perennial from Asia. Thick, smooth green leaf stalks grow directly from the tuber. The leaf blade, held at an angle at the top of the stalk, is very large, heavy textured and narrow- or spear-shaped, with prominent veins. The pale yellow flowers, consisting of a calla-like spathe surrounding the inconspicuous cluster of true flowers, are usually hidden among the leaves on stalks that are shorter than those of the leaves.