>They are found at the ditches bordering cultivated fields which brings >to mind wet and artificially irrigated environments. Dear Arnold; L. radiata is said to be a common weed around the raised edges of rice paddies/ terraces. They get mixed into the soils between the water line and the pathways on the tops of the dividers between paddies. I suppose in these locations they get an occasional propagation( by chopping with hoes?), and sit with roots in water and bulbs above. When paddies are dried between harvests, the bulbs tolerate some drying. I have heard they do the same thing along some canals and levees in the SE US esp Louisiana and Florida. Any PBS members have experience here? Joe Shaw? L radiata is the only one I have heard tat does this. Best Jim -- Dr. James W. Waddick 8871 NW Brostrom Rd. Kansas City Missouri 64152-2711 USA Ph. 816-746-1949 Zone 5 Record low -23F Summer 100F +