(2747.) M. effusum, Linn.; Hook., Fl. II., 235.

A fine tall grass, growing in cold damp woods throughout the northern forest region. Wet thickets, Whycocomagh, Cape Breton; and at Salt Lake, and Jupiter River, Anticosti. (Macoun.) Richmond, Carle-ton Co., N.B. (Fowler, Cat.) Between Florenceville and Andover, KB. (Brittain.) Nepisiquit Lakes, N.B. (Hay.) Island of Orleans, and Thunder River, Q. (St. Cyr.) Sugar Bush Lake, Montcalm Co., Q. (D'Urban.) Damp woods near Ottawa. (Fletcher, Fl. Ott.) Woods, near Prescott, Ont.; common. (Billings.) Cold woods, and cedar swamps, central Ontario, westward to Owen Sound, and north-westerly to Nipigon River, Lake Superior. (Macoun.) Komoka, Ont. (Burgess.) Wet woods, vicinity of London, Ont. (Burgess. Millman.) Neighbor. hood of Montreal and Quebec. (Hooker, Fl.)