(2743.) O. asperifolia, Michx., Fl.I.,51; Pursh, Fl. I., 60; Hook.,

Fl. II., 236.

Urachne asperifolia, Trin. Diss. I., 174. U. leucosperma, Link. Hort. Berol. I., 94.

Rocky woods, not infrequent, and widely extended. Newfoundland. (Reeks.) Rocky woods, Truro, and Halifax, N.S. (Macoun.) Frederic-ton Junction, and Port Elgin; Petitcodiac; common at Salmon River, in "blue-berry barrens," N.B. (Fowler, Cat.) Madeline River, Gaspé coast, Q. (Porter.) Gomin's Wood, Quebec city. (St. Cyr.) Woods along Jupiter River, Anticosti. (Macoun.) Woods in the vicinity of Ottawa. (Fletcher, Fl. Ott.) Miriwin's Woods, near Prescott, Ont. (Billings.) Kemptville, Ont. (Porter.) Rich, rocky woods throughout central Ontario, westward to Owen Sound, north-westerly to Nipigon River, and south to Port Arthur, and twelve miles up the Kaministiqua River. (Macoun.) Vicinity of Hamilton, Ont. (Logie.) Port Colborne, Lake Erie. (McGill Coll. Herb.) Vicinity of Kingston, Ont. (Prof. Fowler.) Woods near Toronto. (Burgess.) Wooded banks, London, Ont. (Burgess. Millman.) Lake Mistassini, N.E.T. (J. M. Macoun.) Not uncommon on dry slopes from the Kananaskis through the Rocky Mountains to the Columbia Valley at Donald, B.C.; near Clinton, and at Soda Creek, on the Frasei, B.C. (Macoun.) Canada to the Rocky Mountains. (Hooker, Fl.)

(2744.) O. Canadensis, Torr. Fl. N. York II., 433.

0. parviflora, Nutt.; Hook., Fl. II., 236. Stipa juncea, Michx., Fl. 1., 54. S. Canadensis, Poir.; Pursh, Fl. I., 72. Milium pungens, Torr., Fl. I., 78. Urachne brevicaudata, Trin. Gen. Pan., 27.

Rather rare in dry sandy and pine woods. Manowin Island, Seven Islands Bay, St. Lawrence River. (St. Cyr.) Tadousac, Lower St. Lawrence, Q. (A.T. Drummond.) Rocky woods, near Ottawa. (Fletcher, Fl. Ott.) Woodlands west of Brockville, Ont. (Billings.) Quite common at Chalk River, on the Ottawa, and at North Bay, Lake Nipissing; dry sandy hills at Belleville, and on the Oak Hills, Hastings Co.; very common on Rice Lake Plains, Northumberland Co., Ont. (Macoun.) Sandy thickets along Lake Huron, at Southampton, Ont. (Burgess.) Twenty-five miles west of Port Arthur, on high dry land. (Macoun.) Canada to the Saskatchewan. (Hooker, Fl.) South

Kootanie Pass, Rocky Mountains; upper crossing of the Blackwater River, B.C. (Dawson.) Occasionally met with on dry gravelly slopes in the Rocky Mountains, from Castle Mountain to Donald in the Columbia Valley; Soda Creek, Eraser River, and Spence's Bridge, B.C. (Macoun.)

(2745.) O. melanocarpa, Muhl. Gram. 79.

0. asperifolia, Kunth, Enum. I., 176, in part. Milium racemosum, Smith; Bigel. Fl. Bost., 25. Piptatherum nigrum, Torr., Fl. I., 79. Urachne racemosa, Trin. Diss. I., 174.

Rocky woods, rather rare and local. Woods, vicinity of Ottawa. (Fletcher, Fl. Ott.) Miriwin's Woods, near Prescott, Ont. (Billings.) Very common amongst Laurentian rocks at Shannonville, and throughout North Hastings, Ont. (Macoun.) Jones Falls, Rideau Canal, Ont. (Millman.) Wooded hillsides, London, Ont. (Burgess. Millman.)

(2746.) O. cuspidata, Benth. Journ. Linn. Soc. XIX., 82.

Ericoma cuspidata, Nutt. Gen. I., 40; Macoun, Cat. No. 2143.

Stipa membranacea, Pursh, Fl. II., 728; Hook., Fl. II., 237.

S. hymenoides, Roem. & Schultz. Syst. II., 339.

Urachne lanata, Trin. Panic. 38.

Fendleria rhynchelytroides, Steud. Syn. Gram. 420.

A most beautiful grass, growing in large clamps on sand in the prairie region and British Columbia. White Mud River, Assiniboia, and Milk River Ridge, Alberta. (Dawson. Burgess.) Very abundant amongst sand hills at the source of the Qu'Appelle; north of the Cypress Hills; and south of Battleford. (Macoun.) Fort Carleton, Saskatchewan River. (Hooker, Fl.)