146 GEOLOGICAL SURVEY OF CANADA. 



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



Mespilus arbuti/olia, var. melanocarpa, Michx. Fl. I., 292. 

 P. melanocarpa, Willd. Pursh, 339. 



The common form in New Brunswick. (Fowler's Cat.) Rocky Luke, 

 N.S. (Lindsay.*) Vicinity of Montreal. (Me Gill Coll. Herb. ) 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. PL, 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 Superior. On islands in Lake 

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



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



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



P. Americana, Richards, in Frankl. Journ., 23. 



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



Winnipeg River, Man. (Bourgeau.') Maline Rapids, Dawson Route, 

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

 and westward through the Rocky Mountains. (Macoun.') Montreal 

 Mountain. (Men-ill Coll. Herb.*) Vicinity of Ottawa. (Fletcher, Fl. 

 Oft.) North end of Lake Winnipeg. (R. Sell.} Sitka. (Rothr. Alask.) 

 South Greenland. (Book. Arct. Pi.*) This and the preceding species 

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



(676.) P. rivularis, Dougl. 



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

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

 in the Lower Valley of the Fraser. (Macoun.*) Queen Charlotte Islands 

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

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



174. CRAT/EGUS, 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. 



