(2405.) A. triphyllum, Torr., Bot. N. York, II., 239.

Arum triphyllum, Linn.; Hook., Fl. II., 168; Pursh, Fl. II., 399.

A. atrorubens, Ait. Kew. III., 315. Rich low woods, rather common. Hantsport, Pictou, Middletown, and Truro, N.S. (Sommers, Cat.) Truro, and Annapolis, N.S. (Macoun.) Common; Bass River, Woodstock; St. John and King's Co's., N.B. (Fowler, Cat.) Campbellton, N.B. (Chalmers.) Bathurst, N.B. (McGill Coll. Herb.) Papineau Wood, near Montreal, 1821. (Dr. Holmes.) Montreal Mountains. (McGill Coll. Herb.) Common in low rich woods, Argenteuil Co., Q. (D'Urban.). McKay's woods, Dow's swamp, and other localities near Ottawa. (Fletcher, Fl. Ott.) Very common in woods at Prescott, Ont. (Billings.) Very common in all low rich woods throughout central Ontario. (Macoun.) Common around Hamilton, Ont. (Logie.) Vicinity of London, Ont.; low rich woods Emerson, Man. (Burgess.) Opposite Grand Island, Lake Superior. (JR. Bell.)

(2406.) A. Dracontium, Schott. Melet. I., 11.

Arum Dracontium, Willd.; Pursh, Fl. II., 400; Michx., Fl. II., 188. Apparently confined to a small area in south-western Ontario. Low rich river flats, London, Ont. (Burgess.)