(2465.) D. spathaceum, Pers.; Hook., Fl. II., 232; Pursh, Fl. I., 53.

D. Canadense, Pers.; Pursh, Fl. I., 54. Scirpus spathaceus, Michx., Fl. I., 32.

Not uncommon in marshes and by lake borders, from the Atlantic to the Pacific. Halifax, N.S. (Sommers. Macoun.) Caledonia, Guys-boro Co., N.S. (Faribault.) Earlston Lakes, Pictou Co., N.S. (McKay.) Very wet places, Kent Co.; and Norton, N.B. (Fowler, Cat.) Beaumont, Bellechasse Co., Q. (St. Cyr.) Swampy ground, near Hamilton's Farm, Argenteuil Co., Q. (D' Urban.) Kemptville, Ont. (Porter.) Casselman and several other places near Ottawa. (Fletcher, Ft. Ott.) Common in marshes at Prescott, Ont. (Billings.) Quite common at Belleville and throughout central Ontario. (Macoun.) Mossy bog, London, Ont. (Burgess. Millman.) Moon River, Muskoka Co., Ont. (Burgess.) Sou-sou-wa-ga-mi Creek, Lake Huron; Michipicotin to Lake Missinaibi, Ont. (B. Bell.) In a marsh at Langford Lake, and in a marsh at Sproat Lake, Alberni, west coast of Vancouver Island. (Macoun.) Canada to the Saskatchewan. (Hooker, Fl.)