120 GEOLOGICAL SURVEY OF CANADA. 



259. P. ambigans, (NYL.) TUCKERM. 





On trees at Comox, Vancouver Island, May 2nd, 1887. 

 (Macoun.) On bark of Douglas fir, Pearce Island, Gulf of 

 Georgia, B.C. (Dr. G. M. Dawson.) 



260. P. rhodocarpa, KOERB. 



Labrador or Newfoundland. (Waghorne fide Eckfeldt^ On 

 bark, Arctic America. (Nylander.) On trees, northern British 

 Columbia, June, 1875. (Mac.un.) 



261. P. communis, DC. 



On trunks and rocks. 



Labrador or Newfoundland. ( Waghorne fide Eckfeldt.} On 

 trunks at Baddeck and Margaree, Cape Breton Island, N.S.; on 

 trees, Madeline River, Gaspe Co., Que.; on trees and rocks in 

 woods at Ottawa, Ont.; and on trunks, Aylmer, Que.; on beech 

 trunks at Belleville, Hastings Co., Ont.; on trunks, Jordan station, 

 Lincoln Co., Ont., May I7th, 1901 ; on trees, Canfield Junction, 

 Haldimand Co., Ont.; on maple bark, Algonquin Park, Ont., July, 

 1900 ; on trees, falls of Nipigon River, Ont. (Macoun?) On 

 bark, Rigaud Mountain, Vaudreuil Co., Que. (Rev. G. Ducharme.) 



262. P. leioplaca, (Acn.) SCH^R. 



On trees and rocks. 



On bark of trees at River Head, Sparrible Cove, and Middle 

 Arm, Newfoundland. (Waghorne.) Canada. (Richardson.) On 

 trees, Ste. Anne des Monts River, Gaspe Co., Que.; on trees at 

 Amqui station, Intercolonial Railway, Que.; on trunks in woods, 

 at Baddeck and Margaree, Cape Breton Island, N.S., July, 

 1898 ; on beech trees in woods at Buckingham, Que., 1896. 

 (Macoun.) 



The above includes P. Icevigata, Nyl., which has not been 

 separated by us. 



263. p. pustulata, (ACH.) NYL. 



On bark of trees and dead wood. 



Coast of Gaspe, Que.; on old cedar rails north of Aylmer, Que., 

 May, 1897 ; on bark of trees at Belleville, Hastings Co., Ont.; on 

 alder trees at Revelstoke, B.C. (Macoun^) 



