CATALOGUE OF CANADIAN PLANTS. 441 



(1994.) Q. macrocarpa, Michx. Mossy-cup Oak. 



Q. olivseformis, Cat. Holmes Herb, 17. 



Q. macrocarpa, var. olivseformis, Gray, Man. 451, 1868. 



Q. alba, var. Gunnisonii, Macoun's Cat. No. 1601. 



Q. alba, Hook. Fl. II., 158, in part. 



Q. obtusiloba, Michx. Bourgeau in Palliser's Report, 260. 



More widely distributed than the white oak, but never attaining as 

 large a size nor covering as large areas. Near the residence of W. S. 

 Butler, at Grand Lake, KB. Bare. (Fowler's Cat.) Vicinity of 

 Montreal. (Holmes.} Extending up the Ottawa from its mouth to 

 Pembroke ; along the St. Lawrence, on limestone shingle forming 

 extensive groves at Prescott and Brockville ; on both sides of the Bay 

 of Quinte it is very common, extending some miles back from the 

 water and ascending both the Moira and the Trent, from thence west- 

 ward it is a common tree and is the " W hite Oak " of the northern part of 

 Lake Huron. It appears again at the southern end of Lake Winnipeg 

 and becomes of much value in many parts of Manitoba, where it forms 

 large groves of fine trees. The last traces of it appear as stunted trees 

 near the mouth of Shell Eiver on the Assinniboine, and up the Qu'Ap- 

 pelle and westward as far as Spy Hill west of Fort Ellice. (Macoun.) 

 On creek banks, Turtle Mountain, Man. (Burgess.} This is the com- 

 mon oak in the Eed Eiver country, and attains a good size along the 

 streams and in sheltered localities. (Dawson.) Fine trees are found 

 on Eainy Eiver and in the district between the Lake of the Woods 

 and Eed Eiver. On the English Eiver it first appears about half way 

 between Lonely Lake and Winnipeg Eiver. Along Lake Winnipeg- 

 it extends as a tree to the Loon Straits, and as a bush to Berens Eiver. 

 (M. Bell.) 



(1995.) Q. bicolor, Willd. Swamp White Oak. 



Q. Prinus, var. tomentosa, Michx. Fl. II., 196. 



Q. Prinus, var. discolor, Michx. N. American Sylva. I., 43, 1819. 



The limits of this species are ill defined, as there is much confusion 

 amongst collectors regarding the various oaks of any district. This, 

 however, is the "Blue Oak" of the lumbermen and at one time fur- 

 nished much of the oak exported from that part of Ontario west of 

 the Trent Eiver. We have no authentic record of it east of the Moira, 

 Hastings Co., Ont., but it is still met with in low, damp or swampy 

 woods throughout the valley of the Trent and all western Ontario. 

 Easily distinguished from the other white oaks by its long peduncled 

 fruit. 



