Either of two wetland plants of the genus Peltandra (family Araceae), P. sagittifolia and P. virginica, native to eastern North America, having arrow-shaped leaves, green or white spathes, and edible rhizomes.
Origin
Mid 19th century.
Definition of arrow arum in US English:
arrow arum
noun
Either of two wetland plants of the genus Peltandra (family Araceae), P. sagittifolia and P. virginica, native to eastern North America, having arrow-shaped leaves, green or white spathes, and edible rhizomes.