(2285.) P. biflorum. Ell. Gray, Man. Ed. V., 531.
Bather common in rich woodlands and by fences. Near Halifax, N.S. (Lawson.) Not rare, Pictou, N.S. (McKay.) Truro, Annapolis, and Windsor, N.S. (Macoun.) Fredericton; St. Stephen; common at Salmon River and Andover; St. Francis and Upper St. John, N.B. (Fowler, Cat.) Island of Orleans. (St. Cyr.) In rich woods at Rivière du Loup, Q. (Thomas.) Abundant in rocky woods, Argenteuil Co., Q. (D'Urban.) Montreal Mountain, 1821. (Dr. Holmes.) Rich woods, vicinity of Ottawa. (Fletcher, Fl. Ott.) Rich woods, common at Pres-cott, Ont. (Billings.) Kemptville, Ont. (Porter.) Rich low woods, very common throughout central Ontario. (Macoun.) Common at Hamilton, Ont. (Logie.) Rich wooded banks at London; and Parry Sound, Georgian Bay. (Burgess.) Hilton, near Wiarton, Ont. (J. Bell.) Woods at Owen Sound, and in woods up the Kaministiqua, west of Lake Superior. (Macoun.)
(2286.) P. giganteum, Dietr. Gray, Man. Ed. V., 531.
Confined to western Ontario and westward. Dunning's farm, near Niagara, and at Amherstburgh, Detroit River, Ont.; also at Portage la Prairie, Man. (Macoun.) Vicinity of London, Ont., and in thickets at Emerson, Man. (Burgess. Millman.) Along the Saskatchewan. (Hooker, Fl.)