IjOO GEOLOGICAL SURVEY OP CANADA. 



126. NECUNDO, Moench. (ASH-LEAVED MAPLE.) 



(422.) N. aceroides, Moeneh. Box-Elder. 



Acer Negundo, Linn. Pursh, 268. 



Negundo fraxinifolium, Nutt. Hook. Fl. I., 114. 



A few trees of this species are found near Toronto, in the valley of 

 the Humber, about two miles from its mouth. Eleven miles up the 

 Kaministiquia, west of Lake Superior. On an island in the Lake of 

 the Woods. Abundant in all the valleys of the tributaries of the Eed 

 Eiver and of the Saskatchewan, coming from the south ; also abundant 

 on the streams flowing into Lake Winnipegosis. It grows very rapidly 

 when planted in any part of Ontario. This is the "sugar maple" of 

 Manitoba and the North-west, and is destined to be the shade tree of all 

 the prairie cities. 



XXX. ANACAEDIACEiE. Sumach Family. 



127. RHUS, Linn. (SUMACH.) 



(423.) R. typhina, Linn. Stag-horn Sumach. 



R. mridiflom, DC. Prod. II., 67. 



On dry, rocky, or gravelly knolls, or along river margins, or in fence 

 corners. Coi^mon in suitable localities, from Nova Scotia to the west 

 coast of Lake Huron. 



(424.) R. glabra, Linn. Smooth Sumach. 



Canada, and as far north as the Saskatchewan. (?) ( Bichardson.) 

 Chain Lakes, N.S. (Sommers.) Vicinity of London, Ont. (Saunders.) 

 Very abundant on dry, rocky ground, along the Elvers Moira and 

 Trent ; also, at Queenston Heights and around Amherstburg, Ont, ; 

 Lake Nemikin, Dawson Eoute, west of Lake Superior. (Macoun.} 

 Very likely overlooked in many parts of the country. 



(425.) R. copallina, Linn. Dwarf Sumach. 



Rocky places ; very rare in Canada. Thousand Islands, Eiver St. 

 Lawrence. (Eev. J. K. McMorine.) 



(426.) R. venenata, DC. Poison Sumach. 



Occasional in swamps in western Ontario ; Westminster Ponds, Lon- 

 don, Ont. (Burgess.) Swamps near Weston, Ont. (Tyrrell.) 



