Arrow Arum may occur in large colonies along shallow waterways. A nearly aquatic plant with large arrow-shaped leaves frequently in a cluster along water's edge. The leaves are fleshy and have prominent veins.
Berries are a cluster of yellow to blackish-green berries.
Shallow waters of bogs, marshes and wet ditches and the shallows of ponds and slow-moving rivers. It grows 1 to 2 feet high, though up north, larger plants occur. The native range of arrow arrum is from Maine to Ontario and Michigan, south to Florida, Louisiana, and Missouri - inhabiting the shallow waters of marshes, bogs, swamps, ditches and the margins of lakes, streams and rivers. While the seedlings need full sun, the mature plant can tolerate partial shade. The flower is a yellowish spadix which contains stamens and pistils shielded by a partially closed 4 to 8 inch green spathe, blooming in early summer.