102 GEOLOGICAL SURVEY OF CANADA. 



183. P. aurantiacum, (Lightf.) Naeg. & Hepp. 



On dead wood, trees and rocks. 



Greenland. (Arct. Man) Arctic America. {Richardson) Labra- 

 dor or Newfoundland. {WagJiorne ^At. Eckfeldt) On driftwood, 

 Gunn River, Anticosti, Que.; on bark of trees, Truro, N.S.; on 

 rocks and trees, not rare, around Ottawa, Ont.; on bark of trees» 

 Lake Nipigon, Ont. ; on Altms rubra, along the sea at Comox, 

 Vancouver Island. {Macoiin) On driftwood, Blankensop Bay, 

 Gulf of Georgia, B.C. {Dr. G. M. Dawson) 



184. P. rupestre, (Scop.) Br. & Rostr. 



On calcareous rocks, St. Anne des Monts River, Gaspe Co.^ 



Que., Aug. 17th, 1882. {Macoun) 



185. P. cerinum, (Hedw.) Naeg. & Hepp. 



Common on trees, dead wood and mosses. 



Greenland. {Artt. Man) Labrador or Newfoundland. {Wag- 

 liorne fide Eckfeldt) On trunks, Rigaud Mountain, Vaudreuil Co., 

 Que. {Rev. G. Duchartne) Arctic America. {Richardson) On 

 bark of various trees at Baddeck and Margaree, Cape Breton 

 Island, N.S., July, 1898; on birch bark, Algonquin Park, Ont., June, 

 1900; on bark of aspen poplar at Belleville, Hastings Co., Ont.; 

 along Nipigon River, Ont.; on the Porcupine Hills, Man., and in 

 the Moose Mountains, Assa.; along Red Deer River, Man.; Atha- 

 basca River, Lat. 55° ; on moss on rocks at Lytton, B.C.; on 

 bark of maples at Hastings, Burrard Inlet, B C; on bark at 

 Comox, Vancouver Island. {Macoun) 



Var. pyracea, Nyl. 



Labrador or Newfoundland. {Waghorne^A^ Eckfeldt) On old 

 cedar trunks in Dow's swamp, Ottawa, Ont., May 2nd, 1896 ; on 

 bark of small maples at Hastings, British Columbia, April, 1889. 

 {Macoun) On bark, Nagai Island, Shumigan Group, Alaska, 

 Sept. 1 8th, 1892. (/. M. Macoun) Icy Cape, Arctic Ocean, 

 Alaska. {Rothrock) 



Var. pyracea, Nyl. forma, ulmicola, DC. 



Caloplaca pyracea, f. ulmicola, DC. 



Very abundant on dead Negundo aceroides on the banks of Old 

 Wives' Creek, near Old Wives' Lake, Assa., and at the forks of 

 the creek, June 2nd, 1895. {Macoun) 



