214 The Ottawa Naturalist. [February 



proposed as a substitute. Again collected in iqoi in the 

 same place by Dr. James Fletcher and J. R. Anderson. 



Potentilla PUMiLA, Poir. 



Sandy woods, Tilsonburg, Ont. No. 34,428. {John 

 Macoun.) New to Canada. 



Malus rivularis, Roem. 



From Sumas Lake up the Chilliwack Valley to the east 

 end of Chilliwack Lake. Nos. 34,368-72. 190 r. {J. M. 

 Macoun.) Eastern limit. 



Pyrus communis, L. 



Common m thickets and woods around Queenston 

 Heights and Niagara, Ont., 1901. {John Macoun.) 



SoRBUS occiDENTALis, Greene. 



A common species on the mountains bordering the 

 Chilliwack Valley, east to the Skagit Range. Generally at 

 between 5,000 and 6,000 teet altitude, but found" as low as 

 3,500 and as high as 6,500. Its favorite habitat is on the 

 tops of ridges, and it was found in no other situation in iqoi 

 no matter what the altitude. {J. M. Macoun.) New to 

 Canada, 



Crat^gus Douglasii, Lindl. 



Along the Abitibi River between the outlet of Lake Abi- 

 tibi and the mouth of Black River, N. E. Ontario in 1901, 

 and in 1902 at Birch Bark Portage, about 100 miles below 

 Black River. {^-J- Wilson.) Eastern limit. 



Crataegus occidentalis, Britt, 



The common CratcBgus in the province of Assiniboia. 

 Our specimens are from Wood Mountain, Old Wives' Creek, 

 Medicine Hat and Milk River. 



Saxifraga hvpnoides, L. 



^. ccBspitosa, Macoun, Cat. Can, Plants, vol. i, p. 150 in part. 

 Rocky cliffs along the sea-shore above Albour Brook, 

 between the Madeline River and St. Anne des Monts, Gasp6, 

 Que., 1882. {Macoun.) New to America. 



