(2802.) D. atropurpurea, Scheele; Vasey, Cat. Grasses U. S. 53,

(1885.)

Aira atropurpurea, Wahl.; Gray, Man. Ed. V., 642; Macoun, Cat. No. 2234. Apparently confirfed to the mountains of eastern Quebec, and northeastward. Summit of Mount Albert, Shickshock Mountains, Q. (Macoun. Porter.) Lake Mistassini, N.E.T. (J. M. Macoun.)

Var. minor, Vasey, Bull. Torr. Club XV., 48,

"Culms 10-12 inches high, slender, panicle few-flowered, spikelets much smaller than the type." Grassy glades in woods at Fort George, James Bay, six miles from the coast, 1887. (J. M. Macoun.)

Var. latifolia, Scribner.

D. latifolia, Vasey, Grasses of U. States, 53, (1885.)

Aira atropurpurea, Wahl.; Hook., Fl. II., 243.

A. latifolia, Hook., Fl. II., 243; Macoun, Cat. No. 2237.

Abundant in the Rocky Mountains from Canmore westward to Roger's Pass, Selkirk Mountains. (Macoun.) Queshel Lake, 2,200 feet alt., B.C. (Bowman.) Rocky Mountains. (Hooker, Fl.) Sitka, Ounalashka, and from Point Barrow to Mackenzie River. (Rothr. Alask.)

(2803.) D. brevifolia, R. Br.; Hook., Fl. II., 242.

Aira arctica, Spreng. Bot. Gazette, X., 366. Vicinity of Fort Conger, Grinnell Land, lat. 81° 44'. (Lieut. Greely.)

Arctic sea-shore and islands. (Hooker, Fl.) Greenland. (Lange.)

(2804.) D. caespitosa, Beauv.; Hook., Fl. II., 242.

Aira caespitosa, Linn.; Pursh, Fl. I., 77; Macoun, Cat. No. 2239. A. ambigua, Michx., Fl. I., 61.

Abundant in bunches along river banks, from the Atlantic to the-Pacific. Newfoundland. (Rev. A. Waghorne.) Magdalen Islands, N.S. (McKay.) Cape Forteau, Yarmouth, N.S. (Macoun & Burgess.) Ken-nebeccasis, Tabusintac, on the Bathurst Road, Restigouche, N. B. (Fowler, Cat.) Sheldrake River. and L'Ange-Gardien, Q. (St. Cyr.) Crevices of rocks, Jupiter River, and English Bay, Anticosti; along the Madeline and Ste. Anne des Monts rivers, Gaspé, Q. (Macoun. Vicinity of Ottawa. (Fletcher, Fl. Ott.) Rocky banks of rivers throughout central and northern Ontario, and extending to Lake

Nipigon, and Rainy Lake. (Macoun.) Saugeen, Lake Huron, and at Port Arthur, Lake Superior. (Burgess.) Lake Mistassini, N.E.T.; Severn River, Keewatin; Moose Mountain Creek, Assiniboia. (J. M. Macoun.) Michipicotin River, and Oba Lake, Ont.; Oxford House, Keewatin. (R. Bell.) North Fork of Old Man River, Rocky Mountains; Lewes River, lat. 62°, and Pelly Banks, lat. 62°, N. W. T. (Dawson.) Not rare along the Saskatchewan and all its branches, and extending north to Peace River, and west through the Rocky Mountains to the Columbia Valley. (Macoun.) Saskatchewan to Bear Lake. (Hooker, Fl.) Ounalashka, and the mainland of Alaska. (Rothr. Alask.)

Var. arctica, Vasey, Cat. Grasses U.S. 53, (1885.)

D. caespitosa, var. ß. major, Hook., Fl. II., 241. Arctic sea-coast. (Hooker, Fl.) Kotzebue Sound, Ounalashka, Sitka, and the interior of Alaska. (Rothr. Alask.)

Var. Bottnica, Vasey, Cat. Grasses U.S. 53, (1885.)

D. Bottnica, Wahl.; Trin. Icon. t. 255. Shores of the Gulf of Georgia, and Queen Charlotte Islands. (Dawson.) Sitka. (Rothr. Alask.) Port Etches, Alaska. (Barclay.)

Var. longiflora, Trin.; Vasey, Cat. Grasses U.S. 53, (1885.)

Abundant in salt marshes at the mouth of the Nanaimo River, and along all the coasts of Vancouver Island, either under this form or the preceding one. (Macoun.) Ounalashka. (Rothr. Alask.) Vancouver city, B.C. (Prof. Fowler.) Queen Charlotte Islands, B.C. (Dawson.)

Var. maritima, Vasey, Bull. Torr. Club, XV., 48, (N. Var.)

This is a very depauperate form, only 6-8 inches high, collected on the South Twin Island, James Bay, by J. M. Macoun, 1887.

(2805.) D. calycina, Presl, Eel. Haenk. I., 251.

D. danthonioides, Munro; Benth. Pl. Hartweg. 342. Aira danthonioides, Trin.; Hook., Fl. II., 243; Macoun, Cat. No. 2240. Abundant in desicated places near Victoria, on Mount Tolmie, Cedar Hill, at Goldstream, and Nanaimo, Vancouver Island. (Macoun.)

(2806.) D. elongata, Munro.; Benth. Pl. Hartweg. 342.

Aira elongata, Hook., Fl. II., 243; Macoun, Cat. No. 2235. Abundant in numerous places on dry gravelly soil throughout the southern part of Vancouver Island, at Cedar Hill, Goldstream, Che-mainus, Nanaimo, Qualicum, and Alberni. (Macoun.) Near Victoria, Vancouver Island. (Fletcher.)

(2807.) D. alba, Roem. & Schultz. Syst. II., 688.

Aim flexuosa, Linn.; Pursh, Fl. I., 77; Hook., Fl. II., 243; Macoun, Cat. No. 2238.

Not rare on rocky soil in the eastern part of Canada. Newfoundand. (Reeks.) Ungava Bay, Labrador. (Barnston.) Nain, coast of Labrador. (R. Bell) Near Bedford, Halifax Co., N.S. (Sommers, Cat.) Abundant at Kingston, Pirate's Cove, and near Halifax, N.S. (Macoun.) Rocky banks, Yarmouth, N.S. (Burgess.) On rocks near the mouth of the Kennebeccasis, N.B. (Fowler, Cat.) Ellis Bay, Anticosti. (St. Cyr.) Tadotisac River, St. Lawrence, Q. (A. T. Drummond.) Mount Albert, Shickshock Mountains, Gaspé, Q. (Macoun. Porter.) Pine grove, two miles west of Prescott, Ont. (Billings.) Rocky banks of North River, Belmont, Peterboro Co.; crevices of rocks, Hooper's Lake, Hasting's Co.; Jones Falls, near Owen Sound; among rocks, Queenston Heights, Niagara River; Little Flat Bock Portage, Nipigon River; along Thunder Bay, at Port Arthur, and twenty miles up the Kamin-istiqua, west of Lake Superior. (Macoun.) Vicinity of Hamilton, Ont. (Logie.) Lake Mistassini, N.E.T. (J. M. Macoun.) Greenland. (Lange.)