Orontium aquaticum, sometimes called Golden-club, is a species of flowering plants in the Araceae family. It is the single living species in the genus Orontium, which also contains several extinct species described from fossils. O. aquaticum is endemic to eastern North America and is found growing in ponds, streams, and shallow lakes. It prefers an acidic environment. The leaves are pointed and oval with a water repellent surface. The inflorescence is most notable for having an extremely small almost indistinguishable sheath surrounding the spadix. Very early in the flowering this green sheath withers away leaving only the spadix.