41. B. divergens, (Ach.)

On earth in alpine and arctic regions.

Greenland. (Vahl) Newfoundland. (Herb. Delessert) Long Island, Newfoundland. (Waghorne) Clearwater Lake, Labrador, July 12th, 1896. (A. P. Low) Marble Island, Hudson Bay and Digge's Island, Hudson Strait. (Dr. R. Bell) Barren Grounds, Lat. 62o 30', Long. 103o 15', W., 1893. (J. W.Tyrrell) Great Bear Lake. (Richardson) On rocks, Parson's Mountain, Victoria, Vancouver Island, 1893. (Macoun) Kotzebue Sound, Alaska. (Herb. Church) Islands of Behring Strait. (Wright.)

42. B, bicolor, (Ehrh.)

Greenland. (J. Vahl.) Emily Harbor, Labrador. (Waghorne)

43. B. jubata, (Linn.) var. prolixa, (Ach.) Th. Fr

Red Bay,Independent and Blanc Sablon, Labrador. (Waghorne) On spruce trees at Baddeck, Cape Breton Island, N.S., 1898; on earth, Nipigon River, Ont., July, 1884; Morley, foothills of Rocky Mountain, June, 1885; on trees near the railway station, at Banff and on spruce trees, Jumping Pound Creek, Alta., Rocky Mountains; at Revelstoke, B.C., May 16th, 1890. (Macoun) Unalaska, Aleutian Islands, Behring Sea, August 21st, 1891. (J. M. Macoun.)

We have not seen Mr. Waghorne's specimens, but all the others referred here are fuscus-black, rigid and covered with white soredia. They are very different from the usual forms of chalybeiformis.

Var. chalybeiformis, (Ach.)

On earth in alpine districts.

Greenland. (J. Vahl.) On earth, Baffin Land, north of Hudson Strait, 1896. (Dr.R.Bell.) Clearwater Lake, Labrador, July 21st, 1896. (A. P. Low.) Quite common on spruce trees at Big Intervale and Half-WayBrook, Cape Breton Island, N.S., July, 1898; on fence-rails at Belleville, Ont.; in swamps, Algonquin Park, Ont., July, 1900; on earth, Cypress Hills, Assa.; on earth, Jumping Pound Creek, foot-hills of Rocky Mountains; on trees and mountains by Kootenay Lake, B.C.; on mountains south of Spence's Bridge, B.C.; on trees, summit of Mount Benson, Nanaimo, B.C., July, 1893. (Macoun.) On earth, St. Paul Island, Behring Sea. (J. M. Macoun.)

Var. implexa, Fr.

On trees throughout Canada.

Greenland. (Arct. Man) Arctic America. (Richardson) Notre Dame Bay, Newfoundland, and Blanc Sablon, Labrador. (Waghorne.) On trees, Tadousac, Que. (A. T. Drummond) Barren Grounds, Lat. 61° 13', Long. 104', W. (J. W. Tyrrell) On trees in many parts of Cape Breton Island, N.S., 1898; Truro, N.S.; Brackley Point, Prince Edward Island; along Gunn River, Anti-costi; on spruce trees, Algonquin Park, Ont., June, 1900; Current River, Lake Superior an i Nipigon River, Ont.; Porcupine Mountains, Man.; Crow's Nest Pass, Rocky Mountains; on trees at Donald, Columbia Valley, B.C.; along the Columbia River at Revelstoke, B.C.; at Hastings, Burrard Inlet, B.C.; at Victoria, on Mount Benson and at Comox, Vancouver Island. (Macoun) Todd Mountain, B.C. (Dr. G.M.Dawson.) Skeena River, B.C.; St. Paul Island, Behring Sea, 1892. (J. M. Macoun)

44. B. Fremontii, (Tuckerm.)

On the branches of coniferous trees.

On Larix occidentalis, Arrow Lakes, Columbia River, B.C.; on trees in swamps at Sicamous, B.C., July 7th, 1889; on spruce trees, Stewart's Lake, B.C.; on Douglas Fir, Mount Benson, Nanaimo, Vancouver Island. (Macoun) Chilliwack Valley, B.C., 1901. (J. M. Macoun.) British North America. (Drummond.)