122 GEOLOGICAL SURVEY OF CANADA. 



28. GYALECTA, (Ach.) Anzi. 



270. G. lutea, (Dicks.) Tuckerm. 



On bark of trees. 



On hemlock bark at Beechwood, Ottawa, Ont.; on spruce bark 

 along the Red Deer River, Porcupine Mountains, Man. {Macoun.) 



2 '71. G. Pineti, (Schrad.) Tuckerm. 



On bark and rotten wood at the base of trees. 

 On dead wood in woods, Sudbury Junction, Ont., May 29th, 1884. 

 {Macoun.) 



272. G, rhexoblephara, (Nyl.) Tuckerm. 



On earth, growing over mosses, &c. 



Greenland. {Vahl.) Islands of Behring Strait. {Wright.) 



29. URCEOLARIA, Tuckerm. 



273. U. scruposa, (Linn.) Nyl. 



On rocks and on earth and often growing over mosses. 



On earth, Labrador or Newfoundland with var. bryophila, Eschw. 

 {Waghorne fide Eckfeldt.) Arctic America. {Richardson.') On 

 rocks. Lake Nipigon, Ont.; on the prairie north of Cypress Hills, 

 Assa. ; common on earth along Old Wives' Creek and south of 

 Wood Mountain, Assa.; on earth and roots along Jumping Pound 

 Creek, Rocky Mountains, June, 1897 ; on earth at Revelstoke and 

 Deer Park, Columbia River, B.C.; on earth in Roger's Pass, Sel- 

 kirk Mountains, B.C. {Macoun^ Alaska. {Rothrock.) 



30. THELOTREMA, (Ach.; Eschw. 



274. T. lepadinuin, (Ach.) 



On bark of trees and dead wood. 



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

 Eckfeldt.) Arctic America. {Richardson.) On ash trees at Ot- 

 tawa, Ont.; on Douglas fir, Victoria, Vancouver Island and on 

 Alnus rubra at Comox, and Alberni, Vancouver Island. {Macoun^ 



