154 GEOLOGICAL SURVEY OF CANADAj 



412. H. alpinum, Ach. 



Labrador or Newfoundland. {Waghome ?id€: Eckfeldt.)] 



413. H. porphyrites, Tuckerm, 



On bark of trees, Labrador or Newfoundland! {Waghorne fide 

 Eckfeldt.) 



414. H. leucoxanthum, (Sprengc) Mass. 



Labrador or Newfoundland, (Waghorne fide Eckfeldt.) 



88. LECIDEA, (Ach.) Tuckerm. 



415. L. Candida, (Web.) Ach. 



Upon earth in the extreme north. 



Arctic America. {Richardson.) Greenland. {Vahl.) On rocks, 

 Deer Park, Lower Arrow Lake, Columbia River, B.C. {Macoun.) 



416. L. cseruleo-nigricans, (Lightf.) ScHiER. 



On earth along the River St. Lawrence, Lat, 48**. {Pringle.) 

 On earth on Moose Mountain, Rocky Mountains, July 3rd, 1897. 

 alt. 6,500 feet. {Macoun.) 



417. L. cumulata, Sommerf, 



On the earth in alpine and arctic regions, , 



Greenland. {Vahl.) 



418. L. squalida, (Schleich.) Ach. || 



On the earth in alpine and arctic regions, 

 Greenland. {Vahl,)] 



418^. L. flavo-virescens, (Dicks.) Borr, 



Parasitic on the thallus of Bceomyces Byssoides, 

 Greenland. {Arct. Man.) 



419. L. pruinosa, (Smith) Flot, 



On rocks, Middle Greenland. {Eberlin.') On rocks, Birchy 

 Cove and Irishtown, Newfoundland. {Waghorne.) On rocks 

 along Jumping Pound Creek, Rocky Mountains, June, 1897 ; on 



