70 GEOLOGICAL SURVEY OF CANADA. 



1898 ; on rocks and dead wood, seldom fertile, on trees com- 

 monly SO, Perce, Bay des Chaleurs, Bonaventure Co., Que.; on ash 

 and other trees at Ottawa, Ont.; on trunks at Belleville, Ont.; 

 on fence-rails at Brighton, Ont.; on old fence-rails, Seymour 

 West, Northumberland Co., Ont.; on rocks, North Bay, Lake 

 Nipissing ; Algonquin Park, Ont.; June, 1900 ; on trees. Thunder 

 Bay, Lake Superior; on deadwood and rocks, Nipigon River, Ont.; 

 on trees along Jumping Pound Creek and Bragg's Creek, Rocky 

 Mountains ; on trees at Donald, B.C., July 6th, 1885 ; on rocks, 

 Devil's Lake, Rocky Mounains ; on old logs, Hastings, Burrard 

 Inlet, B.C.; on rocks near Victoria, and on the old wharf at 

 Comox, Vancouver Island. {Macoun.) On trees. New Westmin- 

 ster, B.C. {Law.) On dead wood, Alert Bay, Vancouver Island. 

 {Dr. G. M. Dawson.) 



Var. obscurata, Ach. 



L'Anse au Mort, Labrador. (Wagkorne.) Alpine rocks, Arctic 

 America. {Herb. Hooker.) On rocks on Moose Mountain, alt. 

 6,000 feet. Rocky Mountains, July 2nd, 1897. {Macoun.) Islands 

 of Behring Strait. ( Wright.) 



Var. enteromorplia, Tuckerm. 



Blanc Sablon, Labrador. {Wagkorne.) Very abundant on 

 trees around Victoria, at Nanaimo, Qualicum, and Comox, Van- 

 couver Island; on trees at Hastings, Burrard Inlet, B.C.; on 

 trees near McLeod's Lake, northern British Columbia. {Macoun.) 

 On trees, Fort Rupert, Vancouver Island. {Dr. G. M. Dawson.) 

 Chelliwack Valley, B.C. (/. M. Macoun.) 



Var. vittata, Ach. 



Bay Bull Arm, Trinity Bay and Goose Arm, Newfoundland. 

 {Wagkorne.) On spruce trees along Ste. Anne des Monts River, 

 Gaspe Co., Que. {Macoun.) At Carmanah, near Cape Beale, Van- 

 couver Island. (/. M. Macoun.) 



61. P. encausta, (Smith) Nyl. 



Alpine rocks, Greenland. {Vakl.) Labrador. {Wagkorne.) 



Var. alpicola, Nyl. 



A blackened alpine condition. 



Greenland. {Vakl.) Labrador. {Wagkorne.) 



