On damp earth by roadsides, rivers, lakes and brooks.

Greenland. (Vahl.) Forteau, Labrador. (Waghorne.) On earth, Ste. Anne des Monts River, Gaspé Co., Que.; along the Lievre River above the falls at Buckingham, Que.; Gull River, at the head of Moore's Lake, Victoria Co., Ont.; five miles up the Kaministiquia River, Lake Superior; on earth along Jumping Pound Creek, Rocky Mountains; at Quesnel, Fraser River, B.C.; in Albert Canon, Selkirk Mountains, B.C.; Hastings, Burrard Inlet, B.C.; by roadsides at Victoria, Vancouver Island. (Macoun.) Northwest coas1. (Menzies.) Behring Strait. (Wright.)

123. P. aphthosa, (Linn.) Hoffm.

On rocks amongst mosses, on old logs and earth.

Greenland. (Arct. Man.) Throughout Arctic America. (Richardson) Fort Chimo and Clearwater Lake, Labrador. (A. P. Low.) On rocks, Eagle River, Newfoundland. (Waghorne.) At Fort Norman, Mackenzie River. (Miss E. Taylor) Along the Tobique River, N.B. (G. U. Hay.) On Rigaud Mountain, Vau-dreuil Co., Que. (Rev. G. Ducharme) In woods along the Rouge River, Argenteuil Co., Que. (D'Urban.) Sides of hummocks in swamps, Edmonton, Ont. (James White) Rotten logs, Morton's swamp, Brampton, Ont. (Thos. Walker) Shores of Lake Superior. (Agassis.) Quite common at Baddeck and Margaree, Cape Breton Island, N.S., July, 1898; on earth at Truro, N.S.; on the bases of trees, Jupiter River, Anticosti; on earth along the Gaspé coast; on earth at Ottawa, Ont.; on logs at Carleton Place, Ont.; on earth at Belleville, Ont.; on a decaying log at Guelph, Ont.; common in Algonquin Park, Ont., 1900; on mossy rocks, Rideau River, Lake Superior; in mossy woods, Lake Nipigon; on earth in woods, Duck Mountain, Man.; on earth along Jumping Pound Creek, Rocky Mountains; on old logs, Revelstoke, B.C.; on rocks, North Arm, Burrard Inlet, B.C.; on rocks, Burnside Road, Victoria, Vancouver Island. (Macoun.) Mossy rocks, Lake Winnipeg; Chilliwack Valley, B.C.; St. Paul Island, Behring Sea; and Port Etches, Alaska. (J. M. Macoun.) Mountains east of Adam's Lake, B.C., alt. 3,300 feet, (Dr. G. M. Dawson.)

124. p. horizontalis, (Linn.) Hoffm.

On mossy rocks, Tobique River, N.B. (G. U. Hay.) On rocks in woods, Margaree, Cape Breton Island, N.S., July, 1898; on rocks, Ste. Anne des Monts River, Gaspé Co., Que.; on rocks and logs at Ottawa and Carleton Place, Ont.; at Shannonville, Hastings Co., Ont.; on old logs, Algonquin Park, Ont., June, 1900; on rocks near Otter Head, Lake Superior, and on rocks, Lake Nipigon, Ont.; on rocks, shore of Kootenay Lake, B.C.; on rocks and earth in woods at Revelstoke, B.C.; on old logs, Roger's Pass, Selkirk Mountains, B.C. (Macoun.) Chilliwack Valley, B.C., 1901. (J. M. Macoun.) Moist rocks amongst mosses, shores of Behring Strait. (Wright.)

125. P. polydactyla, Neck.) Hoffm.

On rocks and trunks amongst mosses.

Greenland. (Branth.) L'Anse au Mort, Labrador; Bay of Islands, Newfoundland. (Waghorne.) Moist rocks, Tobique River, N.B. (G. U. Hay.) On logs in woods, Riviere Rouge, Argenteuil Co., Que. (D'Urban.) On ground at Edmonton, Ont., (James White.) On boulders in woods at Baddeck, Cape Breton Island, N.S., July, 1898; in woods, Gaspé Co., Que.; on rocks, Algonquin Park, Ont., June, 1900; on old logs, Albert Canon, Selkirk Mountains, B.C.; on rocks at Hector, Rocky Mountains; on old logs at Hastings, Burrard Inlet, B.C.; on earth at Comox, Vancouver Island. (Macoun) Crow's Nest Pass, Rocky Mountains. (Dr. G M. Dawson.)

126. P. scutata, (Dicks.) Leight.

On earth, rocks and trees, among mosses.

British Columbia. (Dr. Lyall) On earth at Yale, Fraser River, B.C.; at Victoria and Comox, Vancouver Island. (Macoun.) Harbledown Island, Gulf of Georgia, B.C. (Dr. G. M. Dawson?) Behring Island, Behring Sea. (J. M. Macoun.)

12V. p. pulverulenta, (Tayl.) Nyl.

Greenland. (Brentel) Clearwater Lake, Labrador, July, 1896. (A. P. Low) Capstan Island and L'Anse au Clair, Labrador. (Waghorne.) On rocks, Smoky Mountain, Cape Breton Island, N.S., Aug. 3rd, 1898; on rocks, Algonquin Park, Ont., June, 1900. (Macoun.) Mouth of Skeena River, B.C.; Port Etches and Prince of Wales Island, Alaska. (J. M. Macoun.) On rocks, Kotzebue Sound, Alaska. (Herb. Babington.)

128. p. malacea, (Ach.) Fr.

On earth, Greenland. (Branth.) Bay Bull's Arm and Middle Arm, Newfoundland. (Waghorne) On earth at Tadousac, Que. (A. T. Drummond.)

129. p. rufescens, (Neck.) Hoffm.

On earth, rocks and trunks, among mosses.

Greenland. (Arct. Man) Arctic America. (Richardson) On earth, Forteau and Red Bay, Labrador. (Waghorne) On the ground and on mossy hummocks, Edmonton and Credit Forks, Ont. (James White) On rocks in woods, Margaree, Cape Breton Island, N.S., July 16th, 1898; on earth at Truro, N.S.; on earth, rocks and trees at Ottawa, Ont.; on rocks, Lake Nipigon; on earth, Thunder Bay, Lake Superior; on earth, Manitoba House, Lake Manitoba, Man.; on earth in woods at Revelstoke, B.C.; on earth at Hector, Rocky Mountains, B.C.; at Quesnel, B.C.; and on rocks, Burnside Road, Victoria, Vancouver Island. (Macoun.)

130. P. canina, (Linn.) Hoffm.

On earth, rocks and mossy trunks.

Greenland. (Branth) Arctic America. (Richardson) Canada. (Agassiz.) Digge's Island and Mansfield Island, Hudson Strait. (Dr. R. Bell.) On earth, Forteau, Labrador; also Birchy Cove, Newfoundland. (Waghorne.) Drury's Cove, St. John's and Tobique rivers, N.B. (G. U. Hay) On Rigaud Mountain, Vaudreuil Co., Que. (Rev. G.Ducharme) On a dead log near Kingston, Ont. (Thos. Walker.) On sandy earth, east end of Sable Island, N.S., Aug. 8th, 1899; quite common at Baddeck and Margaree, Cape Breton Island, N.S., July, 1898; roots of trees, Jupiter River, Anticosti; on rocks near Meech's Lake, near Chelsea, Que.; common at Ottawa, Ont.; on logs in woods, Carleton Place, Ont.; on earth in woods, Belleville, Hastings Co., Ont.; on earth in woods, Jordan Station, Lincoln Co., and Pelee Point, Essex Co., May, 1901; on old logs, Algonquin Park, Ont., June, 1900; on earth, Lake Nipigon, Ont.; on earth and logs at Jumping Pound Creek and Crow's Nest Pass, Rocky Mountains; on earth in woods at Revelstoke and Donald, B.C.; on rocks and trees, Burnside Road, Victoria, Vancouver Island. (Macoun) Deceit Bay, B.C., and Comox, Vancouver Island. (Dr. G. M. Dawson) Kadiak Island, Alaska; St. Paul Island and Unalaska, Behring Sea. (J. M. Macoun)

Var. spongiosa, Tuckerm.

On earth, Eagle River, Newfoundland. (Waghorne) On earth, Algonquin Park, Ont., June, 1900; on mossy logs along the Fraser River at Yale, B.C., 1872. (Macoun.) Middleton Island, Alaska, Lat. 59o 30'; St. Paul Island, St. George Island and Unalaska, Behring Sea. (J. M. Macoun.)

Var. membranacea, Ach.

Northwest coast. (Douglas) Carmanah, near Cape Beale, Vancouver Island; and at Port Etches, Alaska, 1892. (J. M. Macoun.)

Var. spuria, Ach.

Meadows in the Bay of Islands, Newfoundland. (Waghorne) Clearwater Lake, Labrador, July, 1896. (A. P. Low) In a dense tuft of moss which it divided, St. Paul Island, Behring Sea, June, 1897. (J. M. Macoun.) On earth, near Victoria, Vancouver Island, May, 1875. (Macoun.)

Var. sorediata, Schaer.

Clode Sound, Newfoundland. (Waghorne.) On earth along the Tobique River, N.B. (G. U. Hay.) On banks of islands in Behring Strait. (Wright.)