146 GEOLOGICAL SURVEY OF CANADA. 



Var. melanocarpa, Hook. Fl. I., 204. 



Mcupilm arbutifolia, var. melanocarpa, Michx. Fl. I., 292. 

 P. melanocarpa, Willd. Pursh, 339. 



The common form in Xew Bi-unswick. (^Fowler's Oat.) Eocky Lake, 

 N.S. (Lindsay.) Vicinity of Montreal. (McGill Coll. Serb.) Common 

 in Ontario, and extending to Sturgeon Lake, Dawson Eoute, west of 

 Lake Superior. (Macoun.) 



(674.) P. Americana, DC American Mountain-Ash. 



Sorbus Americana, Marsh. Pursh, 341. 



P. Aucuparia, Meyer. Hook. Arct. PI., 290, in part. 



Cool, rocky woods. Newfoundland. (Morrison.) Pictou, and Cape 

 Breton Island, N.S. (McKay.) Halifax. (Lawson.) Common in 

 woods, N.B. (Fowler's Cat.) Abundant in Quebec and northern 

 Ontario, and especially so around Lake SujDci-ior. On islands in Lake 

 Winnipegoosis, Man., becoming a tree a foot in diameter. (Macoun.) 



(675.) P. sambucifolia, Cham. & Schlecht. 



Sorbus Aucuparia, var. /3, Michx. Fl. I., 290. 

 P. Americana, Eichards. in Frank!. Journ., 23. 

 P. Aucuparia, Meyer. PI. Bourgeau, 256 and 263. 



Winnipeg Eiver, Man. (Bourgeau.) Maline Eapids, Dawson Eoute, 

 west of Lake Superior ; in woods north of Little Slave Lake, N.W.T., 

 and westward through the Eocky Mountains. (Macoun.) Montreal 

 Mountain. (McGi.ll Coll. Herh.) Vicinity of Ottawa. (Fletcher, Fl. 

 Ott.) North end of Lake Winnipeg. (B.Bell.) Sitka. (Rothr. Alask.) 

 South Greenland. (Rook. Arct. PI.) This and the preceding species 

 either pass into each other or they are badly chariicterized. (Macoun.) 



(6Y6.) P. rivularis, Dougl. 



Nootka Sound and other parts of North-west America. (Menzies.) 

 Observatory Inlet. (Scouler.) Abundant on Vancouver Island and 

 intheLowerValley of theFraser. (Macoun.) Queen Charlotte Islands 

 and generally on the coast of British Columbia. Up the Skeena Eiver, 

 B.C., to ninety, miles from the sea. (Dawson.) Sitka. (Bothr. Alask.) 



174. CRAT/ECUS, Linn. (WHITE THORN.) 



(677.) C. oxyacantha, Linn. English Hawthorn. 



Cultivated in many parts of Ontario. Fruiting abundantly. Planted 

 for hedges in Nova Scotia, New Brunswick and Quebec. 



