26. A. latifrons, Lindb.

Miquelon Island, Gulf of St. Lawrence. (DelÓmare.) On earth, Salt Lake, Anticosti, August 10th, 1883; on dead wood at Baddeck and Margaree, Cape Breton Island, July, 1898; on old logs, Beechwood, Hemlock Lake and Britannia, near Ottawa; on rotten wood, Otter Pond, near Brackley Point, Prince Edward Island; on old stumps, Algonquin Park, Ont., July, 1900; on rotten wood, Hastings, Burrard Inlet, B.C.; on old logs, in woods at Revelstoke, Columbia River, B.C.; on dead wood, Parson's Mountain, Sea's farm, and Cedar Hill, near Victoria, Vancouver Island; on wet logs at Nanaimo, V.I.; on dead wood at Comox, V.I.; very common. (Macoun.) Mt. Verstoviaand Far-ragut Bay, Alaska. (Evans.)

27. A. palmata, (Hedw.) Dumort.

On rotten stumps at Truro, N.S.; on old logs in Dow's Swamp and at Beechwood, Ottawa, Ont.; on rotten logs at Belleville, Hastings Co., Ont.; on rotten wood at Hastings, Burrard Inlet, B.C.; on rotten stumps, Cedar Hill, near Victoria, Vancouver Island; also on old logs at Comox, V. I. (Macoun.) Prince of Wales Island, Alaska. (J. M. Macoun.)

28. A, sessilis, (Sprengel) Dumort.

On old logs in a swamp at Carleton Place, near Ottawa, Ont., May 30th, 1884;on wet earth and on logs at Belleville, Hastings Co., Ont., July 12th, 1873. (Macoun.) This species is now included in the preceding by authors.

29. A. pinnatifida, Nees.

On wet earth in a road cutting, at the junction of the Sooke Lake Road, with that to Goldstream, near Goldstream, Vancouver Island, B.C., June 2nd, 1893. (Macoun.)

30. A. pinguis, (Linn.) Dumort.

Umanakfjord, Greenland. (Vank÷ffen) On wet earth at Gunn, St. Mary's and Becscie rivers, Anticosti; on peat moss Mer Bleue, near Ottawa, June 15th, 1892; on roots and moss in water, "Big Swamp," Murray, Northumberland Co., Ont., August 3rd, 1873; in a bog near the C. P. R. station at Banff, Rocky Mountains; in bogs, House Mountain, near Lesser Slave Lake, Atha.; on old logs in a swamp at Quesnel, B.C.; also on sticks in pools in woods at Comox, Vancouver Island. (Macoun.)

31. A, multifida, var. ambrosioides, (Nees) Lindb.

On earth in a swamp at Nanaimo, June 4th, 1887, and on earth in pools in woods at Comox, Vancouver Island, May 3rd, 1887. (Macoun.)