2365.) J. trifidus, Linn.; Engelm., Mon. June. 447.

Mountain summits or far north. Newfoundland. (Engelmann.) Summit of Mount Albert, Gaspé, Q., alt. 4,000 feet, 1882. (Macoun. Porter.) Southern Greenland. (Hook. Arct. Pl.)

(2366.) J. biglumis, Linn.; Hook., Fl. II., 192.

Arctic sea-coast and islands; Rocky Mountains, north of Smoking River; Bay of Good Hope, Behring Straits. (Hooker, Fl.) Kotzebue Sound. (Rothr. Alask.) Port Kennedy, Boothian' Peninsula. (Dr. Walker.) Coast to snow line on both sides of Baffin Bay. (J. Taylor.) Greenland. (R. Brown.)

(2367.) J. triglumis, Linn.; Hook., Fl. II., 192.

Mountain summits and Arctic coasts. Ungava Bay, Labrador coast. (Barnston.) In mountain woods, along streams on mud at Castle Mountain and Kicking Horse Lake, Rocky Mountains. (Macoun.) Fort George and the South Twin Island, James Bay. (J. M. Macoun.) Arctic sea-coast; alpine swamps in the Rocky Mountains. (Hooker, Fl.) Greenland. (R. Brown.)

(2368.) J. stygius, Linn.; Engelm., Mon. Junc, 448.

Peat bogs, and northward rather rare or seldom collected. Peat bogs at Richibucto and Point Escuminac, Andover and Salmon River, and near St. John, N.B. (Fowler, Gat.) Campbellton, N.B. (Chalmers.) Dalhousie, N.B. (Fletcher) Peat bog, Salt Lake, Anticosti. (Macoun.) Newfoundland. (Engelmann.)

(2369.) J. castaneus Smith; Hook., Fl. II., 192.

Mountain summits and Arctic shores. Ungava Bay, Labrador coast. (Barnston.) Ellis Bay, Anticosti. (St. Cyr.) Abundant along the Bow River at Castle Mountain, and westward in the river valley and over the summit to Kicking Horse Lake, where it is particularly abundant, 1885. (Macoun.) Lewis River, lat. 61° north of British Columbia. (Dawson.) York Factory, Hudson Bay; Edmonton on the Saskatchewan, and west to the Rocky Mountains, thence to Bear Lake; North West coast, from Ounalashka to Kotzebue Sound. (Hooker, Fl.) Grows where water has stood in the early part of the season, west side of Cumberland Gulf. (J. Taylor.) Greenland. (R. Brown.)

(2370.) J. Vaseyi, Engelm., Mon. June, 488.

Wet or damp meadows, chiefly in the prairie region. Meadows at the Pic, Lake Superior, and on Flat Rock Portage, Lake Nipigon; not uncommon on the prairies as far west as Brandon. As this species has a close resemblance to J. tenuis, it is probable that it is often passed over for that species. On the Saskatchewan. (Bourgeau.) Island of Orleans. (St. Cyr.)

(2371.) J. Greenii, Oakes & Tuckerm. Sill. Journ. 45 (1843.)

Very likely rare in all parts of Canada, or may be overlooked as a form of J. tenuis. Wet sandy places, Kouchibouguasis, Kent Co., N.B. (Fowler, Cat.) Wet sand, shore of Hog Lake, North Hastings, Ont. (Macoun.) Sandy shore and crevices of rocks, Port Cockburn, Lake Joseph, Muskoka Co., Ont. (Burgess.)

(2372.) J. tenuis, Willd.; Hook., Fl. II., 191; Pursh, Fl. I., 238.

J. bicornis, Pursh, Fl. I., 236; Michx., Fl. I., 191.

Rather common from the Atlantic to the Pacific, usually in boggy pastures or along old roads in woods. On Halifax Common, N.S. (Sommers.) Common at Truro, Windsor and Yarmouth, N.S. (Macoun.) Wet places, Goldenville, Guysboro Co., N.S. (Faribault.) Common; Hopewell Cape, and Andover, N.B. (Fowler, Cat.) Valcartier and Beaumont, Q. (St. Cyr.) Hamilton's Farm, Argenteuil Co., Q. (D' Urban.) Vicinity of Ottawa. (Fletcher, Fl. Ott.) Common at Prescott, Ont. (Billings.) Abundant in wet meadows in central Ontario. (Macoun.) Neighborhood of Hamilton, Ont. (Logie.) Niagara Falls, and low grounds at London, Ont. (Burgess.) Wet meadows, Owen Sound; Little Flat Rock Portage, Lake Nipigon; very abundant throughout the prairie region and northward in the mixed forest country to the Peace River. (Macoun.) Kabinakagami Lake, Ont.; Oxford House and Nelson River, Keewatin. (B. Bell.) Lake Mistassini, N.E.T.; Severn River, Keewatin; and Souris River, Man. (J. M. Macoun.) Rather common in meadows and damp pastures in many parts of Vancouver Island, especially around Victoria. (Macoun.) Pitt River, B.C. (Hill.) Lake Huron to Bear Lake, and from Hudson Bay to the sources of the Columbia in the Rocky Mountains. (Hooker, Fl.)

Var. ß. secundus, Engelm., Mon. June, 450.

Apparently rare or seldom collected. Bass, and Salmon rivers, N.B. (Fowler, Cat.) Occasionally met with between Edmonton and Little Slave Lake. Our specimens are from this region. (Macoun.)

Var. γ congestus, Engelm., Mon. Junc, 450.

Common in numerous meadows, at Oak Bay and Cedar Hill, near Victoria, Vancouver Island, 1887. (Macoun.)

(2373.) J. Cerardi, Lois. Notic. 60, (1810.) (BLACK GRASS.)

In salt marshes along the Atlantic coast. Windsor, N.S. (Howe.) Salt marshes at Truro and Annapolis, N.S. (Macoun & Burgess.) Magdalen Islands and Pictou, N.S. (McKay.) Salt marshes at Kou-chibouguasis, and St. John, N.B. (Fowler, Cat.) Beaumont Lake, Q. (St. Cyr.) Salt marsh at the head of James Bay, Victoria, Vancouver Island, 1887. (Macoun.)

(2374.) J. bufonius, Linn.; Hook., Fl. II., 190; Pursh, Fl. I., 238.

Abundant in suitable localities from the Atlantic to the Pacific. Brigus and Petty Harbor, Newfoundland. (R. Bell.) Boggy places at Annapolis and Yarmouth, N.S. (Macoun.) Very common throughout New Brunswick. (Fowler, Cat.) Abundant at Salt Lake and Jupiter River, Anticosti. (Macoun.) Thunder River, Q. (St. Cyr.) Hamilton's Farm, Argenteuil Co., Q. (D'Urban.) Low wet places, quite common at Ottawa. (Fletcher, Fl. Ott.) Common at Prescott, Ont. (Billings.) Very abundant in overflowed spots by brooks and rivers in central Ontario, and around Lake Superior. (Macoun.) Vicinity of Hamilton, Ont. (Buchan.) On roadsides at Port Stanley, Lake Erie, and at Port Arthur, on Lake Superior. (Burgess.) Abundant on mud by rivers throughout the prairie region and on the Cypress Hills; also abundant in muddy places on Vancouver Island, at Victoria, Nanaimo, Qualicum and Alberni. (Macoun.) Sitka, Alaska. (Meehan.) Throughout Canada to Bear Lake; North "West coast, abundant. (Hooker, Fl.) Greenland. (Lange).