Xyris difformis

Xyris difformis, the bog yelloweyed grass, is a North American species of flowering plant in the yellow-eyed-grass family. It is native to the eastern and southern United States, eastern and central Canada, and Central America. Xyris difformis is a perennial herb up to 90 cm (3 feet) tall with grass-like leaves up to 50 cm (20 inches) long, and yellow flowers. Varieties Xyris difformis var. curtissii (Malme) Kral - Belize, coastal states of USA from Texas to Virginia Xyris difformis var. difformis - Nova Scotia, Ontario, USA (coastal states from Maine to Texas plus areas as far inland as Michigan, Oklahoma, Indiana, and Arkansas) Xyris difformis var. floridana Kral - Belize, Honduras, Nicaragua, USA (coastal states from Louisiana to the Carolinas)...read more on Wikipedia.