This tall weedy species was found on the floodplain of Fontenelle Forest in 2012, the year after the big flood. It was identified with the help of biology professors Kaul and Sutherland. It can be tall (up to 6 feet) and slender (A), or tall and spread out. The male (C,D) and female flowers (E) are found on separate plants (dioecious). The yellow stamens first emerge as in image (C), then change in appearance as shown in image (D). The white stigmas are shown on female flowers in image (E).