(2408.) C. palustris, Linn.; Hook., Fl. II., 169; Pursh, Fl.II, 399.

Bather common in marshes and spring brooks. Windsor, and Pictou, N.S. (Sommers, Cat.) Straits of Canso, Guysboro Co., N.S. (Macoun.) In cold muddy places; Grand Falls, St. Francis River, and Quispamsis, Andover, Chipman, Clifton, Fredericton, and Bathurst road, north of Miramichi, N.B. (Fowler, Cat.) Common at Rivière du Loup, Q. (Thomas.) Dow's swamp and other localities near Ottawa. (Fletcher, Fl. Ott.) Very common at Prescott, Ont. (Billings.) Marshes and ponds, rather common in central Ontario. (Macoun.) Lake Medad, near Hamilton, Ont. (Logie.) In shallow water at London, Ont.; Lake Island, Lake Joseph, Muskoka Co., Ont., and Lake of the Woods. (Burgess.) London and Newboro, Ont. (Millman.) Opposite Gros Cap, Lake Superior. (B. Bell.) Current River, Lake Superior, and in Lake Hannah, Nipigon River; also in marshes at the base of the Porcupine Mountain, Man. (Macoun.) Winnipeg, and North-west Angle Road. (Dawson.) Rupert River, N.E.T.; Lake Winnipeg and up Beren's River and down the Severn River, Keewatin. (J. M. Macoun.) Oba Lake, Ont. (B. Bell.) Canada to the Saskatchewan and Hudson Bay. (Hooker, Fl.)