(2729.) A. alpinus, Smith; Hook., Fl. II, 234, in part.

Cape Prince of Wales, Digge's Island, Mansfield Island, and Nottingham Island, Hudson Strait. (R. Bell) Fort George, James Bay; between Fort Severn, and York Factory, Hudson Bay. (J. M. Macoun) Island of St. Lawrence, and Kotzebue Sound. (Rothr. Alask.) Pond's Bay, and Port Kennedy, Lancaster Sound. (Dr. Walker.) Coast of Hudson Bay, between Fort Churchill and Repulse Bay. (Dr. Rae.) Arctic sea-shores and islands. (Hooker, Fl.) Point Barrow, Arctic coast. (John Murdoch.) Greenland. (Lange.)

(2730.) A. geniculatus, Linn.; Hook., Fl. II., 233.

Apparently introduced eastward. Newfoundland. (Reeks) Abundant in ditches, Point Pleasant, Halifax, N.S. (Macoun. Sommers, Cat.) St, Andrews, N.B. ( Vroom.) Wet places, Carleton, KB. (Fowler, Cat.) Gravelly beach at the lower end of Presqu'ile Point, Lake Ontario; muddy flats at Amherstburgh, Lake Erie. (Macoun.) Watery places on the prairie west of Red Deer Lakes, Alberta. (Macoun.) Along the South Saskatchewan, Alberta. (Dawson.) Greenland. (Lange.)

Var. aristulatus, Munro; Torr., Fl. I., 97.

A. aristulatus, Michx., Fl. I., 43; Hook., Fl. II., 233; Macoun, Cat. No. 2115. A. sub-aristatus, Pursh, Fl. I., 66.

Muddy places and ponds; common and widely distributed. Brigus, Newfoundland. (R. Bell.) Pictou, N.S. (McKay) Charlotte Co., N.B. ( Vroom.) Petitcodiac, N.B. (Brittain.) Wet places, Bass River, N.B. (Fowler, Cat.) Campbellton, N.B. (Chalmers.) Salt Lake, Anti-costi. (Macoun.) Vicinity of Ottawa. (Fletcher, Fl. Ott.) Common at Prescott, Ont. (Billings.) Very common throughout central Ontario, and extending north-westerly to Nipigon River and Lake. (Macoun.) Vicinity of Hamilton, Ont. (Logic) Shallow water at London, Ont. (Burgess. Millman.) Parry Sound, Georgian Bay; Dawson Road, near

Port Arthur; at Emerson. Man. (Burgess.) Kingston, Ont. (Millman.} Rupert River, N.E.T.; Severn River, Keewatin. (J. M. Macoun.) Churchill River, Hudson Bay. (R. Bell.) Not uncommon between Winnipeg and Point du Chien, Man. (Dawson.) In muddy places throughout the prairie region, especially northward, and from Calgary through the Rocky Mountains to the Columbia Valley; through northern British Columbia, to Fort McLeod, lat. 55°. (Macoun.) Ilgacho Brook, B.C. (Dawson.) Red River, Man., 1826. (Douglas.) Canada to Bear Lake. (Hooker, Fl.) Departure Bay, Vancouver Island. (Meehan.)

Var. robustus, Vasey, Bull. Torr. Bot. Club, XV., 13.

In wet places at Ladner's Landing, on the Fraser River, BC, 1885. (Fletcher.) Ponds, near Victoria and Cedar Hill (1875); and on Mount Benson, near Nanaimo, Vancouver Island. (Macoun.) Alaska. (Vasey.) This is a new variety.

(2731.) A. Macounii, Vasey, Bull. Torr. Bot. Club, XV., 12.

A. geniculates, var. pumila, Vasey. (MS.?), 1875. On dry rocks close to Victoria, 1875. Abundant in hollows in rocks where water lies, in the spring at Cadboro and Oak bays, near Victoria, Vancouver Island, 1887. (Macoun.) Very near if not identical with A. Howellii, Vasey.

(2732.) a. pratensis, Linn.; Pursh, Fl. I., 65; Hook., Fl. II., 234.

Introduced from Europe and very abundant in meadows in the Atlantic provinces. Newfoundland. (Reeks.) Bedford, Halifax Co., N.S. (Sommers, Cat.) Very abundant at Annapolis (where it is locally named French Timothy), Grand Prč, Windsor, and Halifax, N.S; common at Louisburg, Cape Breton, where its French origin is again seen; not uncommon in meadows at Victoria, and Nanaimo, Vancouver Island. (Macoun.)

(2733.) A. occidentalis, Scribner, Coulter's Bot. Gaz. XI., 170,

(1886.)

A. alpinus, Dawson, Bound. Rep. 377.

A. pratensis, var. alpestris, Vasey, Cat. Grasses, U. States, 34, (1885.) A. alpinus, Hook., Fl. II., 234, in part. North Fork of Old Man River, foot-hills of Rocky Mountains. (Dawson.) The leafy bract at the base of the spike is very characteristic of this species.