I. Spike solitary and simple. Terminal and androgynous. Colored. * Bracts scale-like.

Stigmas II.

(2504.) C - nardina, Fries. Mant. II, 55 (1835.) C. Hepburnii, Boott,Hook., Fl. II., 209 (1840.)

On mountain summits, and in the arctic regions. Nottingham Island, off Cape Wolstenholme, Hudson Strait. (R. Bell) "The Twins," James Bay. (J. M. Macoun.) Eastern summit of North Kootanie Pass, Rocky Mountains. (Dawson.) On the more elevated summits of the Rocky Mountains, from Castle Mountain westward to Mount Stephen; summit of Stewart's Lake Mountain, B.C. (Macoun.) Rocky Mountains. (Hooker, Fl.) Greenland. (Lange.)

(2505.) C. capitata, Linn. Sp. Pl. Ed. II., 1381; Hook., Fl. II., 208.

Hudson Bay, and Rocky Mountains. (Hooker, Fl.) Greenland (Lange.) We have no Canadian specimens of this species.

(2506.) C. fllifolia, Nuttall, Gen. N. Am. Pl. EL, 204 (1818); Hook., Fl. II., 208.

Uncinia breviseta, Torr. Cyp., 428, (1836.)

Kobresia globvJaris, Dew. Sill. Journ. XXIX., 253, (1836.)

Dry gravelly soil, Qu'Appelle Valley, near Fort Ellice,; abundant on hillsides at Morley, and in the foothills of the Rocky Mountains. (Macoun.) Carleton House, on the Saskatchewan; also in the Rocky Mountains. (Hooker, Fl.)

(2507.) C. dioica, Linn. Sp. Pl., 972.

Along the River St. Lawrence, at Grand Metis, Q. (Pringle.) There is much doubt regarding Pringle's specimens, as Prof. Bailey does not include this species in his catalogue of North American Carices. I have not seen Pringle's specimens.

(2508.) C. gynocrates, Wormsk. in Herb. Hornm.

C. dioica, Schweinitz & Torrey, Mon. (1824); Hook., Fl. II., 208. C. dioica, Linn., var. Davalliana, Dew. Sill. Journ. X., 283, (1826.) C. Redowskiana, C. A. Meyer, Cyp. Nov. t. 4, (1830.) C. monosperma, Macoun, in Herb.; Bailey Carex. Cat. (1882.) C. nigricans, Dew. Sill. Journ. XXIX., 249, (1836.)

Cedar and other swamps throughout the country. Restigouche Co.; Arthurette, N.B. (Fowler, Cat.) Belledune, N.B. (Chalmers.) Bogs, Salt Lake, Anticosti. (Macoun.) Low's Swamp and other localities, Ottawa. (Fletcher, Fl. Ott.) Swamp near Belleville, and in bogs, North Hastings; also Big Swamp, Murray, Northumberland Co., Ont. (Macoun.) Swamp at Saugeen, Ont. (Burgess.) Abundant in swampsaround Lake Superior, and at Red Rock, Nipigon River; swamps along the Red Deer River, at the head of Lake Winnipegoosis, lat. 53°; common in bogs and swamps from Morley westward through the Rocky' and Selkirk mountains, B.C. (Macoun.) Carleton House, on Saskatchewan, to the Arctic sea; also Rocky Mountains. (Hooker, Fl.) Greenland. (Lange.) Churchill River, and York Factory, Hudson Bay. (B. Bell. Dr. Bae.)

Stigmas III.

(2509.) C. leiocarpa, C. A. Meyer, Cyp. Nov. 208, t. 5, (1830); Hook., Fl. II., 208.

C. anthoxantha, Presl. Reliq. Haenk, 203, vide Bceckeler; Hook., Fl. II., 209. Near the glacier on the Stikine River. (Cowley.) Sitka and Ouna-lashka. (Bothr. Alask.)

(2510.) C - circinata, C. A. Meyer, Cyp. Nov. 209, t. 6, (1830); Hook., Fl. II., 209.

Sitka. (Barclay.) Sitka, and Ounalashka. (Bothr. Alask.) Our specimens were collected by Barclay.

(2511.) C. Lyoni, Boott, Hook., Fl. II., 209.

Rocky Mountains. (Hooker, Fl.) According to Drummond, who collected in the Rocky Mountains, between the Athabasca and lat. 55°. Since his time no collections have been made in that region.

(2512.) C - nigricans, C. A. Meyer, Cyp. Nov. 210, t. 7, (1830); Hook., Fl. II., 210.

C. Pyrenaica, Torr. Cyp., 403, (1836.) Western summit of North Kootanie Pass, Rocky Mountains. (Dawson.) Very common on the summits of the higher Rocky Mountains, from Castle Mt. westward to the Selkirk Mountains, B.C.; Mount Arrowsmith, Vancouver Island, alt. 5,600 feet. (Macoun.) Sitka, and Ounalashka. (Rothr. Alash.) Rocky Mountains. (Hooker, Fl.)

(2513.) C - Pyrenaica, Wahl. Köngl. Acad. Handl. XXIV., 139, (1802.)

C. micropoda, C. A. Meyer, Cyp. Nov. 210, t. 6, (1830); Hook., Fl. II., 209.

C. nigricans, Torr. Cyp., 402, (1836.)

C. Davalliana, Dew. Sill. Journ. XXVIIL, 271, (1835.)

Abundant on the summits of the high mountains at Roger's Pass, Selkirk Mountains, B.C.; Mount Arrowsmith, Vancouver Island, alt. 5,500 feet. (Macoun.) Ounalashka. (Rothr. Alash.)

(2514.) C. exilis, Dew. Sill. Journ. XIV., 351, (1828.)

Peat bogs and tamarack swamps. Newfoundland. (La Pylaie.) Peat bog at the head of the North-west Arm, Halifax, N.S.; bogs, Salt Lake, Anticosti. (Macoun.) Lakeville; Trout Lake, near -St. George, N.B. (Brittain.) MerBleue, near Ottawa. (Fletcher, Fl. Ott.)

(2515.) C. pauciflora, Lightf. Fl. Scot., 543, t. 6, (1111); Hooker, Fl. II., 210.

C. leueoglochin, Dew. Sill. Journ. X., 42, (1826.) Peat bogs, and cedar and other swamps, from the Atlantic to the Pacific. Newfoundland. (Reeks.) Wet boggy ground at the head of the North West Arm, Halifax, N.S. (Macoun & Burgess.) Bog near St. John; mouth of the Madawaska; and Chipman, N.B. (Fowler, Oat.) In bogs, Salt Lake, and Ellis Bay, Anticosti; summit of Mount Albert, Shickshock Mountains, Gaspé, Q. (Macoun.) Swamps at Ouatchechou, Q. (St. Cyr.) Abundant in a swamp Kennebec, Addington Co., Ont. (Macoun.) Border of a peat swamp at London, Ont. (Burgess. Millman.) Swamp, One-mile Portage, Nipigon River. (Macoun.) Vicinity of Ottawa. (Fletcher, Fl. Ott.) Border of Langford Lake, Goldstream, Vancouver Island. (Macoun.) Rocky Mountains. (Hooker, Fl.) Sitka. (Rothr. Alask.)

(2516.) C. microglochin, Wahl. Köngl. Acad. Handl. XXIV., 140, (1802); Hook. Fl. II., 210.

Boggy ground, North Twin Island, James Bay, 1887. (J. M. Macoun.) Common in boggy places and along rivers and small streams, from Morley westward through the Rocky Mountains to Donald in the Columbia Valley, 1885. (Macoun.) Easily distinguished from O. pauciflora, by "a conspicuous projecting racheola" which takes the place of the stiff persistent style in that species.