156. S. Bolanderi, Aust.

On logs and stones, Pirate's Cove, Canso, N.S.; on rocks at Truro, N.S.; on stones in brooks near Ottawa, Ont.; on logs in swamps, Sudbury Junction, Algoma; on rocks near Michipico-ten, northeast coast Lake Superior; on trees at Hastings, Bur-rard Inlet, B.C.; on rocks Mount Erskine, Salt Spring Island, Gulf of Georgia, B.C.; on rocks and trees near Victoria, on trees at Nanaimo, on rocks, Mount Arrowsmithand Mount Mark, and on trees at Comox, Vancouver Island. (Macoun.) On logs, Alert Bay, Vancouver Island, and Hanson Island, Gulf of Georgia, B.C. (Dr. G. M.Dawson.) On logs, Chilliwack Lake, B.C.; Port Etches, Alaska, May 18th, 1892; Prince of Wales Island, 1891. (J. M. Macoun.) Sitka, Hot Spring, Mt. Verstovia, Juneau, Douglas Island, Orca, Columbia Fiord, Farragut Bay and Kadiak Island, Alaska. (Evans.) Chilcat, Alaska. (Krause.)

157. s. nemorosa, Dumort.

5. subalpina, Pearson, List Can. Hep., p. 15.

Miquelon Island, Gulf of St. Lawrence. (Delàmare.) On stones, Canaan Forks, Queen's Co., N.B. (J. Moser.) Digge's Island, Hudson Strait. (Dr. R. Bell.) On earth, Jupiter River, Anticosti; on wet earth by roadsides and on rocks by streams, Cape Breton Island, N.S., July, 1898; not rare on Sable Island, N.S., July, 1899; on old logs, Mount Albert, Gaspé Co., Que.; on rotten wood by a brook, Meech's Lake and Cascades, Que., near Ottawa, Ont.; on flat rocks, Addington Co., Ont.; on rocks in damp places, Algonquin Park, Ont., June, 1900; on rocks, borders of brooks, ofposite Michipicoten Island, Lake Superior; on damp rocks, House Mountain, Lesser Slave Lake, Atha.; on rocks by a brook, Roger's Pass, Selkirk Mountains, B.C.; on rocks in a brook at Revelstoke, Columbia River, B.C.; in wet woods at Hastings, Burrard Inlet, B.C.; on damp rocks at Goldstream and Parson's Mountain, near Victoria, Vancouver Island; on Mount

Arrowsmith, Vancouver Island, alt. 4,800 feet. (Macoun.) British Columbia. (Lyall.) Alaska. (Krause.) Reported from Alaska by Rothrock.

158. S. Oakesii, Aust.

Observatory Inlet, northwest coast of America. (Dr. Scouler.) Northeast coast, Lake Superior, July 28th, 1869. (Macoun.)

159. S. undulata, (Linn.) Dumort.

On earth,Seal Lake, Labrador, July, 1896. (A.P. Low.) Labrador. Collected by Waghorne. (Underwood.) Miquelon Island, Gulf of St. Lawrence. (Delaware.) Greenland, Lat. 630 20', May 27th, 1888. (Dr. Rosenvinge.) On rocks, Canaan Forks, Queen's Co., N.B. (Moser.) On wet earth, Point de Roche, Prince Edward Island; on rocks in a brook at Halifax and at Yarmouth, N.S.; on stones in flowing water at Baddeck, Margaree, Half-Way Brook and Louisburg, Cape Breton Island, N.S., July, 1898; in the bed of a brook, Mount Albert, Gaspé Co., Que.; in a small brook near the lower end of Michipicoten Island, northeast coast Lake Superior, July 26th, 1869; on earth along the Columbia River at Revelstoke, B.C.; on stones, Roger's Pass, Selkirk Mountains, B.C.; wet rocks near Griffin Lake, Gold Range, and on rocks, at Yale, B.C.; in bogs near New Westminster, B.C.; near the summit of Mount Arrowsmith, Vancouver Island, alt. 5,500 feet. (Macoun.) On stones in brooks, Tulameen River, B.C. (Dr. G. M. Dawson.) Rocky Mountains. (Lyall.) Observatory Inlet, northwest coast of America. (Dr. Scouler.) Sitka, Juneau, Virgin Bay, Orca, Columbia Fiord, Farragut Bay, Yakutat Bay, Unalaska and Pofoff Island, Alaska. (Evans.) St. Paul Island, Behring Sea, 1892. (J. M. Macoun.) In streams running into Lake Lindeman, Yukon, 1898. (Williams.)

160. S. uliginosa, (Sw.) Dumort.

Greenland. (J. Vahl.) On stones in brooks, Roger's Pass and along Asulcan Creek, Selkirk Mountains, B.C.; on stones in Eagle River, Griffin Lake, B.C., and on the Gold Range north of that point; on Mount Arrowsmith, near the summit, Vancouver Island. (Macoun.) On wet rocks, Carmanah Bay, Vancouver Island; Attu Island and St. Paul Island, Behring Sea. (J. M. Macoun.)

161. S. irrigua, (Nees) Dumort.

On earth by roadsides, Brackley Point, Prince Edward Island; on wet earth by springs at Truro, N.S.; on boggy ground summit of Mount Albert, alt. 4000 feet, Gaspé Co., Que.; on stones in brooks northeast coast of Lake Superior; along Peace River, Rocky Mountain Canon, Lat. 56o 12', Oct. 24th, 1872; by springs at Quesnel, Fraser River, B.C. (Macoun.) Port Clarence, Alaska. (Evans) Scoresby Sound, East Greenland. (C.Jansen.)

162. S. umbrosa, (Schrad.) Dumort.

S. convexa, (Scof.) Pearson, List Can. Hep. p. 15.

Miquelon Island, Gulf of St. Lawrence. (Delaware.) On old logs, Sea's farm, and at Parson's bridge near Victoria; on old logs at Goldstream, on rotten wood, Mount Mark, and on old logs at Comox, Vancouver Island. (Macoun.) Sitka, Mt. Verstovia, Juneau, Orca, Columbia Fiord and Yakutat Bay, Alaska. (Evans.) Scoresby Sound, East Greenland. (C.Jansen)

163. S. imbricata, M. A. Howe, Bull. New York Bot. Gar.

Vol. II., 104, 1901.

On rocks, Crater Lake, at foot of Chilcoot Pass, Alaska, alt. about 900 metres. May 24th, 1898. (Williams)

164. S. curta, (Mart.) Dumort.

On earth, South West Point, Anticosti; on earth along Ste. Anne des Monts River, Gaspé Co., Que.; on old logs at Ottawa, Ont.; on slate rocks 10 miles south of Fort William, Lake Superior, July 16th, 1869; on rocks, Nipigon River, and Lake Nipigon, Ont.; on old logs, Sudbury Junction, Algoma, Ont.; on earth, House Mountain, Lesser Slave Lake, Atha. (Macoun.) Unalaska Island. (Chamisso) Yakutat Bay, Unalaska and St. Michael's, Alaska. (Evans) Scoresby Sound, East Greenland. (C.Jansen)

165. S. gracilis, (Lindb.) Kaalaas.

On rocks by a brook, Big Intervale, Margaree, Cape Breton Island, N.S., July 14th, 1898. (Macoun) Scoresby Sound, East Greenland. (C.Jansen)

166. S. brevicaulis, Tayl.

North America. (Drummond in herb. Hook.)

167. S. glaucocephala, (Tayl.) Aust.

On dead wood, Gaspé coast, and slofes of Mount Albert, alt. 4,000 feet, Gaspé Co., Que.; on elm and other logs at Ottawa, Ont.; on old logs at Belleville, Hastings Co., Ont.; on old logs, very rare, near Wooler, Northumberland Co., Ont., July 20th, 1865; on old logs, Manitoba House, Lake Manitoba, Man.; on old logs west of Fraser River at Quesnel, B.C., 1875. (Macoun.)

168. S. compacta, (Roth) Dumort. Greenland. (Currie & Brentel.)