Amaranthus tuberculatus

Amaranthus tuberculatus, commonly known as roughfruit amaranth, rough-fruited water-hemp, or tall waterhemp, is a species of flowering plant. It is a summer annual broadleaf with a germination period that lasts several months.Tall waterhemp has been reported as a weed in 40 of 50 U.S. states. A distinguishing characteristic of tall waterhemp that sets it apart from similar members of the genus Amaranthus is the lack of hair on its stems and leaves. This characteristic gives the plant a bright, glossy appearance.