Family, Arum. Color, yellow. A scape 1 foot or so tall rises out of the water terminated by a narrow leafless spadix of rich yellow color, covered with small, perfect, yellow flowers. The lower flowers contain 6 sepals and stamens, the upper, 4 of each. The spathe which incloses the very young spadix, after a time, becomes bract-like, imperfect, remaining merely as a sheath at the base of the scape, or it wholly drops off. Leaves, lance-shaped or oblong, on long petioles, varying with the depth of the water, dark green and velvet-like above, pale underneath, all from root. Floating on top of the water. Scape reaches beyond the flowering spadix. May.