CATALOGUE OF CANADIAN PLANTS. 1 69 



45. ARTHO]SIIA,Ach. 



525. A. patellulata, Nyl. 



On trees, Labrador or Newfoundland. {Waghorne fide Eck- 

 feldt.) On aspen poplar trees, Moose Mountain, Man., July 3rd, 

 1880. {Macaun.) 



526. A. astroidea, Ach. 



On bark of trees, common. 



Bay of Exploits, Newfoundland. ( Waghorne.) Abundant on 

 trees around Ottawa, Ont., and at Hull and Aylmer, Que.; quite 

 -common at Belleville, Hastings Co., Ont.; on balsam fir at King's 

 Mountain, Chelsea, Que., 1897. {Macoun.') 



527. A. Swartziana, Ach. 



Frequent on bark of, trees along St. Mary's River, Anticosti, 

 Que.; on trees at Cove Head, Prince Edward Island, 1888 ; 

 at Shannonville, Hastings Co., Ont.; on balsam fir, Lake 

 Winnipegosis, Man.; on ash and maple trees at Leamy's Lake, 

 Hull, Que., 1897. (Macoun.) 



528. A. medilla, Nyl. 



On dead wood, Greenland. {Vakl.) 



529. A. spectabilis, Plot. 



Quite common on old thick bark of various trees. 



Bay of Exploits, Newfoundland. {Waghorne.) On maple trees 

 at Ottawa, Ont.; on bitter-nut hickory at Hull and on basswood 

 at Aylmer, Que.; on basswood at Carleton Place, Ont.; on ash 

 trees, Central Ontario Junction and basswood and other trees at 

 Belleville, Hastings Co., Ont.; on maple trees. Port Colborne and 

 Canfield Junction, southwestern Ontario. {Macoun.) 



530. A. radiata, (Pers.) Th. Fr. 



On bark at Hastings, Burrard Inlet, B. C, 1887 ; on Alnus rubra 

 at Comox, Vancouver Island, June 23rd, 1893. {Macoun.) 



531 A. lecideella, Nyl. 



Chiefly on the bark of young Pinus Sirobus at Ottawa, Ont.; on 

 Acer spicatum at Aylmer, Que.; on pine, ash and basswood at 



