Contact: Wesley M. Knapp, Maryland Department of Natural Resources | WKnapp@dnr.state.md.us ANNAPOLIS, MD (October 20, 2011) – Murdannia keisak, or marsh dayflower as it is sometimes called, is a beautiful wetland plant native to Asia, bearing small but showy purple-white flowers. Don’t let this plant’s beauty mask its true nature. It is a horribly invasive species establishing […]