The Arrow arum (Peltandra virginica) belongs to Araceae (the Arum family). It is an evergreen herb that is distributed on the Atlantic coastal plain of the United States. It has now expanded its distribution range and is also found in the central prairies and western Pacific coast. It grows in rivers and ponds, and its petiole is 40 to 100 cm long. The leaves are arrowhead-shaped, but there is a great deal of variation in their shape. It usually produces spadix surrounded by green spathe from spring to summer. It is an insect-pollinated flower, transmitted by the grass fly Elachiptera formosa. Its leaves, rhizomes, and fruits were an important food source for Eastern Native Americans.