CATALOGUE OF CANADIAN PLANTS. 73 



104, W. (/. IV. Tyrrell.) On rocks, Never's Rapids, Queen's Co., 

 N.B. (/. Moser.) On boulders, Carleton Co., N.B. (G. U. Hay.) 

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

 Dry rocks, Stony Lake, Peterboro' Co., Ont. (Ihos. Walker?) On 

 boulders, Big Intervale, Margaree, Cape Breton Island, N.S., 

 July, 1898 ; on boulders along Ste. Anne des Monts River, Gaspe 

 Co., Que.; on boulders in woods around Ottawa, Ont.; very 

 common in Algonquin Park, Ont., 1900 ; on rocks on Moose 

 Mountain and in Crow's Nest Pass, Rocky Mountains ; on rocks, 

 Blackwater River, B.C.; on rocks and old logs, Deer Park, Col- 

 umbia Valley. B.C.; on rocks at Hastings, Burrard Inlet. B.C.; on 

 rocks, Burnside Road, Victoria, Vancouver Island. (Macoun.) 



68. p. molliuscula, ACH. 



Not uncommon on earth in the southern parts of the prairie 

 region from Manitoba to the Rocky ?/lountains ; on earth at Old 

 Wives Creek, Assa. ; in the Bow River Pass at Morley, and by 

 the lake in the Crow's Nest Pass, Rocky Mountains. (Macoun?} 



<39. P. centrifuga, (LINN.) ACH. 



Alpine and subalpine rocks. 



Greenland. (Branth.) Arctic America. (Vahl.) Digge's Island, 

 Hudson Strait. (Dr. R. Bell.) Blanc Sablon, Labrador. (Wag- 

 home?) Clearwater Lake, Labrador, July, 1896; Summit Lake, 

 Manicouagan River, Que, 1895. (A. P. Low.) Newfoundland. 

 (Desprcaux?) Tobique River, N B. (G. U. Hay.) On rocks, Ta- 

 dousac, Que. (Drummond.) On Rigaud Mountain, Vaudreuil 

 Co., Que. (Rev. G. Ducharme.) Along the northeast coast of 

 Lake Superior, and along Nipigon Lake and river. (Macoun.) 

 North shore of Lake Superior. (Agassis?) 



vo. p. incurva, (PERS.) FR. 



On granitic rocks, alpine and arctic. Greenland. (Branth?) 

 Labrador. (Waghorne.) 



VI. P. ambigua, (WULF.) ACH. 



On trunks, dead wood and rocks. 



Greenland. (Arct. Man.) Arctic America. (Richardson.) Trinity 

 Bay, Newfoundland. (Waghorne.) On dead spruce logs at the 



