351. B. rufo-fusca, Anz.

Upon turfy earth in alpine districts.

Green and. (Vahl) On earth and moss at Donald, Columbia River, B.C., July 6th, 1885. (Macoun.) Labrador or Newfoundland. (Waghorne fide Eckfeldt)

352. B. turgidula, (Fr.) Nyl.

On the bark of coniferous trees and on dead wood. Green and. (Vahl) Labrador or Newfoundland. (Waghorne fide Eckfeldt.)

353. B. rivulosa, (Ach.) Fr.

On rocks.

Ardic America. (Richardson.) On bark of living beech trees at Ottawa, April 19th, 1898. (Macoun.) Labradot or Newfoundland. (Waghorne fide Eckfeldt.)

354. B. arcuatula, (Arn.) Eckfeldt.

On rocks, Labrador or Newfoundland. Closely related to B. rivulosa. (Waghorne fide Eckfeldt)

355. B. leucofhsea, Floerke.

Granite rocks in mountainous and arctic regions. Arctic America, (luckerm)

356. B. scrupulosa, Eckfeldt.

Labrador or Newfoundland. A well-marked species which seems to approach B. Kochiana Hepp. (Waghorne fide Eckfeldt)

357. B. albo-fuscescens, (Nyl.) Eckfeldt.

On rocks, Labrador or Newfoundland. (Waghorne fide Eckfeldt)

358. B. mollis, Wahl.

On rocks, Labrador or Newfoundland. (Waghorne fide Eckfeldt)

359. B. fuscescens, (Sommerf.) Fries.

On the bark of young birch, and often trees and shrubs. (Fries.) Greenland. (Vahl.)

360. B. Paddensis, Tuckerm.

On maple and beech bark on the mountain side, Big Intervale, Margaree, Cape Breton Island, N.S., July 22nd, 1898. (Macoun.)

361. B. Nylanderi, Anz.

On old staging at Frenchman's Cove, Newfoundland. (Wag-horne.)

362. B. Tornoensis, (Nyl.) Th. Fr.

On various trees and shrubs in Eurofe. Also in Arctic America. (Fries.) Greenland. (Vahl) On vine maple (Acer circinatum) at Hastings, B.C., April 14th, 1889. (Macoun.)

363. B. uliginosa, (Schrad.) Fr.

On turfy earth, sand, charred pine stumps, and rotting wood.

Greenland. (Arct. Man.) Labrador or Newfoundland. (Wag-home fide Eckfeldt.) On peaty earth, Salt Lake, Anticosti, Que.; on earth, Algonquin Park, Ont., July, 1900; on earth on rocks, Deer Park, Columbia River, B.C. (Macoun.)

364. B. varians, (Ach.) Tuckerm.

On bark, very common; also on dead wood.

Labrador or Newfoundland. (Waghorne fide Eckfeldt) On alder bark, Cove Head, Prince Edward Island; very common on bark of Alnus incana at Baddeck, Cape Breton Island, N.S., July, 1898; on maple bark at Casselman near Ottawa, Ont.; on blue beech at Aylmer, Que.; on poflar bark near Wooler, Ont.; on young pine trees at Belleville, Hastings Co., Ont.; on maple twigs near Hastings, Burrard Inlet, B.C.; and on poflar trees, Sea's farm, Victoria, Vancouver Island. (Macoun.)

365. B. lucida, (Ach.) Fr.

On rocks in shaded places, on the bare roots of trees, and on dead wood. (Tuckerman.) Arctic America. (Richardson.)

366. B. flavido-livens, Tuckerm. (In litteris)

On bark of Balsam fir at Brackley Point, Prince Edward Island, July 5th, 1888. (Macoun.)

367. B. oxyspora, (Tul.) Tuckerm.

On Parmelia Borreri in McKay's woods, Ottawa, Ont., and on the same species at Lake Nipigon, Ont., July 14th, 1884. (Macoun.)

368. B. mixta, Fr.

On living bark and also less commonly on dead wood. (Tucket man.) Labrador or Newfoundland. (Waghorne fide Eckfeldt) On bark of ash and other trees, Truro, N.S.; on young poflars, Sea's farm, near Victoria, Vancouver Island; on spruce bark in woods at Baddeck, Cape Breton Island, N.S., July 29th, 1898. (Macoun.) On bark of trees, London, Ont. (A. T. Drummond.)

369. B. atropurpurea, (Mass.) Hepp.

On bark, also on dead wood. (Tuckerman.) On bark of dead wood, Middle Arm and Coal River, Newfoundland. (Waghorne.) On living beech trees at Belleville, Hastings Co., Ont., April 20th, 1879; on beech bark near Hemlock Lake, Ottawa, Ont., September 6th, 1891. (Macoun.)

370. B. Laureri, (Hepp.) Tuckerm.

Labrador or Newfoundland. (Waghorne fide Eckfeldt.) On beech trees at Margaree, Cape Breton Island, N.S., July, 1898; on beech bark, both living and dead, at Ottawa, Ont., common; abundant on beech trees around St. Catharines and Niagara Falls, Ont., May, 1901. (Macoun.) Quebec. (A.T.Drummond.) On bark of trees, Rigaud Mountain, Vaudreuil Co., Que. (Rev. G. Ducharme) On beech trees at Edmonton, Ont. (James White.) On beech bark at Credit Forks, Ont. (Thos. Walker.) Alaska. (Hall.)

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371. B. cyrtella, (Ach., Nyl.) Tuckerm.

On hickory bark (Carya alba) at Belleville, Hastings Co., Ont.; on bark of Alnus incana near the Hogsback, Rideau River, May 7th, 1897; on poflar trees, Old Wives' Creek, Assa., May 30th, 1895; on alders near Hastings, Burrard Inlet, B.C., 1889. (Macoun.)

372. B. Heerii, Hepp.

Parasitic on Solorinasaccata.

Labrador or Newfoundland. (Waghorne fide Eckfeldt)

373. B. stereocaulorum, (Th. Fr.) Eckfeldt.

Parasitic on Stereocaulon alpinum.

Labrador or Newfoundland. (Waghorne fide Eckfeldt)

374. B. globulosa, (Floerke.) Hepp.

On dead wood of conifers. (Tuckerman.) On poflar bark in Stewart's bush, near Ottawa, Ont., April 13th, 1895; on dead pine wood, Telegraph Trail, northern British Columbia, June 12th, 1875. (Macoun.) On bark, Nagai Island, Shumigan Group, Alaska, 1892. (J. M. Macoun.)

375. B. micrococca, Koerb.

On old cedar rails (Thuya occidentalis) west of the old toll-gate, Aylmer road, Hull, Que., Oct. 6th, 1898. (Macoun)

376. B. sphaeroides, (Dicks.) Tuckerm.

Upon turfy earth and mosses on rocks, in high northern regions. (Tuckerman.) On moss, St. John's beach, Newfoundland. (Wag-horne.) On mosses in woods at Ottawa, Ont.; bases of trees, Carleton Place, Ont.; on the earth at the base of trees, Algonquin Park, Ont., June, 1900; on moss, northeast coast of Lake Superior; on moss at the base of trees, Red Deer River, Porcupine Mountains, Man.; on rocks, Tunnel Mountain, Banff, on rocks at Hector; on earth along Jumping Pound Creek and on Mount Forget-me-not, Rocky Mountains, 1897; along the Black-water River, northern British Columbia, 1875. (Macoun.) Islands of Behring Strait. (Wright.)