I04 GEOLOGICAL SURVEY OF CANADA. 



191. P. crenulatum, (Wahlenb.) Tuckerm. 



Maritime rocks, Greenland. {VaJtl.) Labrador or Newfound- 

 land. {Waghorne fide Eckfeldt.) Sitka, Alaska. (^Rothrock.) 



192. P. variabile, (Pers.) Nyl. 

 Port Clarence, Alaska. {Rothrock.) 



193. P. vitellinuin, (Ehrh.) Naeg. & Hepp. 



On dead wood and rocks. 



Labrador or Newfoundland. {Waghorne fide Eckfeldt) Green- 

 land. {Arct. Man.) At Fort Franklin, Arctic America. {Rich- 

 ardson.) North Bluff, Hudson Strait. {Dr. R. Bell.) On rocks, 

 Ste. Anne des Monts River, Gaspe Co., Que., Aug. 19th, 1882 ; 

 on old rails, in great profusion, Brighton, Ont., common on old 

 rails and boulders around Ottawa, Ont.; and on boulders at 

 Aylmer, Que., T900. {Macoun) Behring Strait. {Wrigfit.) Port 

 Clarence, Alaska. {Rothrock.) 



Var. aurellum, Ach. 



Labrador or Newfoundland. {Wt/ghorne fide Eckfeldt^ On 

 rocks, Canada. {A. T. Drummond.) On rocks, Ste. Anne des 

 Monts River, Gaspe Co., Que., Aug. 19th, 1882 ; on boulders 

 around Ottawa, Ont., not rare. {Macoun.') 



Var. octosporum, Nyl. 



On earth, north shore of Hudson Strait, Aug., 1897. {Dr. R. 

 Bell.) On rocks near Hogsback, Ottawa, Ont., May 2nd, 1895, 

 and on bark of cedar rails near Ottawa, Ont., April 14th, 1897. 

 {Macoun.) 



24. LECANORA, Ach. 



194. L. lent gera, (Web.) Ach. 



On earth along the Elbow River, below the Fisher branch, 

 Rocky Mountains, July 12th, 1897 '■> on earth at Morley, Bow 

 River Pass, Rocky Mountains, June, 1885. {Macoun.) 



195. L. gelida, (Linn.) Ach. 



On rocks, Greenland. ( Vahl.) On boulders near Stewart's 

 Lake, northern British Columbia, June, 1875. {Macoun.) Cher- 



