(2827.) P. communis, Trim; Hook., Fl. II., 241.

Arundo Phragmites, Linn.; Pursh, Fl. I., 86. In ponds and marshes and by lake margins, from the Atlantic westward to the Pacific. At Truro, and Windsor, N.S. (Macoun.) Resti-gouche, St. Stephen, and Sackville, N.B. (Fowler, Cat.) .Restigouche River, opposite Campbellton, N.B.; also Jupiter River, Anticosti. (Macoun.) Prescott and Ottawa railway bridge, Ottawa. (Fletcher, Fl. Ott.) Along the railway, four miles from Prescott Junction, Ont. (Billings.) Abundant in marshes along the Bay of Quinte, at Belleville, and all marshes in central Ontario, and westward to Lake Huron, at Red Bay and Owen Sound; also fifteen miles up the Kaministiqua, west of Port Arthur. (Macoun.) Vicinity of Hamilton, Ont. (Logie.) Marshes along Lake Ontario, at Kingston, Ont. (Millman.) Michi-picotin River, and Lonely Lake, Ont. (R. Bell.) Grassy Narrows, Lake Winnipeg. (J. M. Macoun.) Abundant in marshes north-west of Edmonton, and around the west end of Lesser Slave Lake, and north to Lake Athabasca. (Macoun.) Marsh at "Chinaman's Ranche" near Cache Creek, B.C. (Fletcher.) Saskatchewan River. (Hooker, Fl.)