M. Brachyelylrum, Trin. Diss. I., 88.
Dilepycum aristosum, Michx., Fl. I., 40. Rocky woods, not common. In woods at Truro, and Windsor, N.S. (Macoun.) Rocky woods, Molus River, Kent Co., N.B. (Fowler, Cat.) Montmorency River, Q. (St. Cyr.) Woods at Chelsea, Q. (Billings.) Vicinity of Ottawa. (Fletcher, Fl. Ott.) Woods west of Prescott, Ont. (Billings.) Rather common in woods throughout central Ontario.
(Macoun.) Vicinity of Hamilton, Ont. (Logie.) Rich woods, London, Ont.; Moon River, Muskoka Co., Ont. (Burgess.) Owen Sound, and woods at Queenston Heights, Ont.; woods along Current River, near Port Arthur, Lake Superior. (Macoun.) Canada. (Goldie.)