l64 GEOLOGICAL SURVEY OF CANADA, 



489. B. Rittokensis, Hellb. 



On rocks, Cape York, Arctic America. {Th. Fries.) 



490. B. coUudens, Nyl. (Tuckerm.) 



Labrador or Newfoundland. (Waghorne fide Eckfeldt.) On 

 rocks along the St. Lawrence below Quebec. (^. T. Drummond.) 

 Chamisso Island, Arctic Ocean. (Rothrock.) 



491. B. excentrica, (Nyl.) Eckfeldt. 



Labrador or Newfoundland. {Waghorne fide Eckfeldt.) 



492. B. badio-atra, (Schjer.) Koerb. 



Rocks in alpine and arctic regions. 



Greenland. {Vahl.) Labrador or Newfoundland. {Waghorne 

 ?ide Eckjeldt.) On rocks, Deer Park, Columbia River, B.C., June 

 7th, I890. {Macoun.) 



493. B. petrsea, (Plot.) Tuckerm. 



Common on rocks and dead wood. 



Greenland. {Vahl.) Labrador or Newfoundland. (Waghorne 

 fide Eckfeldt.) On rocks along the St. Lawrence below Quebec. 

 (4. T. Drummond.) On granite boulders in Rockcliffe Park, 

 Ottawa, Ont.; at Belleville and Shannonville, Hasting- Co., Ont.; 

 at Lake Nipigon, Ont. {Macoun.) St. Paul Island, Kadiak Is and 

 and Port Clarence, Alaska. {Rothrock) 



Var. Montagnaei, Tuckerm. 



Labrador or Newfoundland. {Waghorne fide Eckfeldt.) On 

 granite boulders " elbow" of South Saskatchewan River, Assa., 

 July 13th, 1879. {Macoun.) St. Paul Island and Unalaska Island, 

 Cook's Inlet and Port Clarence, Alaska. {Rothr. ck.) 



Var. grandis, Flcerke. 



Labrador or Newfoundland. {Waghorne fide Eckfeldt.) On 

 granite boulders in Rockcliffe Park, Ottawa, Ont., April 22nd, 

 1897. {Macoun.) 



494. B. empetraea, Nyl. 



On rocks and stone=, Labrador or Newfoundland. {Waghorne.) 



495. B, coniopsoideum, (Hepp ) Eckfeldt. 

 Labrador or Newfoundland. {Waghorne fide Eckfeldt.) 



