CATALOGUE OF CANADIAN PLANTS. 73 



104°, VV. (/. W. 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. {Jhos. 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.) 



€8. P. moUiuscula, Ach. 



Not uncommon on earth in the southern parts of the prairie 

 region from Manitoba to the Rocky P/Iountains ; 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) 



69. P. centrifuga, (Linn.) Ach. 



Alpine and subalpine rocks. 



Greenland, {Braiith) 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. (^- ^' Low) Newfoundland. 

 {Des/yreaux) 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, a: d along Nipigon Lake and river. {Macoun) 

 North shore of Lake Superior. {Agassiz) 



vo. P. incurva, (Pers.) Fr. 



On granitic rocks, alpine and arctic. Greenland. {Braiith) 

 Labrador. {Waghorne) 



'71. 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 



