(43.) C. calcareum, Nees & Hornsch.; Lesq. & James, Mosses of N. America, 53.

G. tortile, Drummond, Muse. Bor -Am. 23.

Quite common on moist calcareous rocks at Owen Sound, 1874; also on calcareous rocks near the Whirlpool, Niagara Falls. (Macoun.) Limestone rocks, Lake Winnipeg. (Drummond.) Pictou Co., N.S. (McKay.) On rocks, New Harbor, Newfoundland. (Rev. A. Waghorne.)

Var. brevifolium, Schimp.; Lesq. & James, Mosses of N. America, 53.

On calcareous earth along the Moira River above Belleville, Ont., 1863. (Macoun.)

(44.) C. rupestre, Schwaegr.; Lesq. & James, Mosses of N. America, 53; Drumm. Muse. Bor. - Am. No. 24.; Canadian Musci No. 18.

Schistose rocks on the Columbia River, and on rocks on the borders of Lake Winnipeg. (Drummond.) On rocks along the Nepigon River north of Lake Superior, 1884, and near the Whirlpool, Niagara Falls; crevices of rocks, Mount Stephen, Rocky Mountains; crevices of rocks, Deer Park, Lower Arrow Lake and at Sproat Mountain, Columbia River, B.C. (Macoun.)

Var. stelligerum, Schimp.; Lesq. & James, Mosses of N. America, 53.

On calcareous rocks along the Gaspé Coast, River St. Lawrence,

1882. (Macoun.)

(45.) C. curvirostrum, Hedw.; Lesq. & James, Mosses of N. America, 54; Drumm. Musc. Bor. - Am. No's. 25 and 26: Canadian Musci No. 17.

On dripping rocks throughout Canada. Alpine rocks, common; and at Niagara Falls. Drummond.) Clefts in rocks at Cape Tourelle, near Ste. Anne des Monts, Gaspe" Co., Que. (J. A. Allen.) South-west Point and Gunn River. Anticosti, 1883; Little Fox River, Gaspé, Que.; Sydenham Falls, Owen Sound, Ont.; calcareous springs, Hudson Hope, Peace River, 1872; also at Morley and Kicking Horse Lake, Rocky Mountains, 1885. (Macoun.) Limestone rocks, Clearwater River, N.W.T. Lat. 57°. (J. M. Macoun.) Crevices of rocks, Deer Park, Lower Arrow Lake, Columbia River, B.C. (Macoun.)

(46.) C. platyphyllum,Kindb.; Bull. Torr.Bot. Club, April, 1889;

Canadian Musci No. 506.

Dioecious. Plants green, not glossy. Stem not papillose, sparingly radiculose, leaves decurrent, distinctly papillose, short, obtuse, oblong-lanceolate, the comal greater, one border often recurved all around; costa greenish yellow, very papillose.

Collected June 16th, 1889, on the face of a small water-fall in the brook that flows into the Thompson just west of Kamloops, B.C.

The falls are less than half a mile south of the C. P. E. Railway. (Macoun.)

(47.) C - tenue, Schrad.; Lesq. & James, Mosses of N. America, 54; Drumm. Musc. Bor. - Am. No. 21.

Limestone rocks of Lake Winnipeg. (Drummond.) On the "Great Trent Boulder" three miles above the Railway Bridge (west side) near Trenton, Ont., 1866; on calcareous rocks at Owen Sound, Ont., 1871. (Macoun.)