Orontium
(the old Greek name for a plant said to grow on the banks of the river Orontes). ORD. Aroideae (Araceae). A monotypic genus, the species being a hardy aquatic perennial, with a deep rootstock. This should be planted in open water, from 6in. to 12in. beneath the surface. Propagated by divisions. O. aquaticum (aquatic). fl. perfect, crowded all over the narrow spadix which terminates the elongated scape; lower ones with six concave sepals and six stamens, upper ones with four; spathe incomplete and distant. May. fr. a green utricle. l. entire, oblong, nerved, long-petioled. North America. (H. E. F. 19; L. B. C. 402.)