Tilley Pond, Darien

Four species of aquatic plants were recorded during our September 2005 survey of this pond, and all four occurred virtually everywhere in the pond. A single submerged species, western waterweed (Elodea nuttallii), covered the bottom of the 2-acre pond and was absent only from one small area just to the north of an island at the pond's north end. Growing across the entire extent of the surface were three species in the duckweed family: great duckweed (Spirodela polyrhiza), common duckweed (Lemna minor), and watermeal (Wolffia species).