325. B. placophyllus, Ach.
326. B. Byssoides, (Linn.) Schaer.
On earth and rocks on elevated regions.
Labrador or Newfoundland. (Wdghorne fide Eckfeldt) On earth at Baddeck, Cape Breton Island, N.S., July, 1898; along the Madeline River, Gaspé Co., Que.; on rocks on islands in Lake Nipigon; on earth on the prairie at Old Wives Creek, Assa., May, 1895; also on rocks at Hector, Rocky Mountains. (Macoun.)
327. B. roseus, Pers.
On sterile earth, common eastward.
Labrador or Newfoundland. (Waghorne fide Eckfeldt.) Bass River, Kent Co., N.B. (Prof. Fowler.) Cape Rosier, Gaspé Co., Que.; at Truro, N.S.; Brackley Point, Prince Edward Island; abundant at Baddeck and Margaree, Cape Breton Island, N.S., July, 1898. (Macoun.)
328. B. aeruginosas, (Scof.) DC.
Rotten wood and moss in cool forests; common.
Greenland. (Arct. Man.) Arctic America. (Richardson.) Clearwater Lake, Labrador, July, 1896. (A. P. Low.) On rotten wood, L'Anse au Mort, Labrador. (Waghorne.) On moss in the Barren Grounds, Lat. 61°, Long. 104', W. (J. W. Tyrrell.) On moss, Canaan Forks, Queen's Co., N.B. (J. Moser.) Spence's Lake, St. John, N.B. (G. U. Hay.) North shore of Lake Superior. (Agassiz.) On old logs and moss, common on Cape Breton Island, N.S.; on dead wood at Truro, N.S.; on earth at Salt Lake,
Anticosti; on old logs, Ste. Anne des Monts River, Gaspé Co., Que.; on old pine logs at Meech's Lake and Buckingham, Que.; on wood, Lake Nipigon and on moss northeast shore of Lake Superior; along Peace River, Lat. 56o, 1872; on old logs at Banff and Hector, Rocky Mountains; at McLeod's Lake, B.C.; on logs, Bragg's Creek and on Elbow Divide, Rocky Mountains, 1897, on dead wood, Parson's Mountain, Victoria, Vancouver Island. (Macoun.) Mountains [east of Adam's Lake, B.C.; on Thurlow Island, Gulf of Georgia, B.C. (D. G. M. Dawson.) West coast of British Columbia to Sitka. (Hall.) Port Etches and Sitka Island, Alaska. (/. M. Macoun.) Sitka and Port Althorp, Alaska. (Rothrock.) Loring and Salmon Creek near Juneau, Alaska. (Miss G. Cooley.)