Negundo. SAPINDACE.E. 23 



swamps, reaching its greatest development in the valleys of the lower 

 Wabash and Yazoo Rivers. A form common in southern Arkansas, east- 

 ern Texas, western Louisiana, and sparingly through the Gulf States to 

 southern Georgia, and well characterized by its obovate or truncate leaves, 

 densely covered, as well as the petioles and young shoots, with a thick 

 white tomentum, is var. Drummondii, Sargent. 



Wood heavy, hard, not strong, close-grained, compact, easily worked ; 

 medullary rays numerous, obscure ; color brown, often tinged with red, 

 the sap-wood lighter ; largely used in cabinetruiaking, turnery, and for 

 wooden-ware, gunstocks, etc. 



67. Negundo aceroides, Mccnch. 

 Box £lder. Ash-leaved Maple. 



Shores of the Winooski River and Lake Champlain, Vermont, near 

 Ithaca, New York, eastern Pennsylvania, and south to Hernando County, 

 Florida ; northwest through the lake region of the United States and 

 Manitoba to Lake Winnipeg, and along the southern branch of the Sas- 

 katchewan to the eastern base of the Rocky Mountains ; west, in the 

 United States, to the eastern slopes of the Rocky Mountains of Montana, 

 and the Wahsatch Mountains, Utah ; southwest through the basin of the 

 Mississippi River, western Texas, and New Mexico to eastern Arizona ; 

 and southward into Mexico. 



A tree 15 to 22 metres in height, with a trunk 0.60 to 0.90 metre, or, 

 exceptionally, 1.20 metres in diameter ; moist soil, borders of streams, etc. ; 

 in the Rocky Mountain region in high valleys, between 5,000 and 0,000 

 feet elevation ; one of the most widely distributed trees of the American 

 forest, reaching its greatest development in the valleys of the Wabash and 

 Cumberland Rivers. 



Wood light, soft, not strong, close-grained, compact ; medullary rays 

 numerous, thin ; color creamy-white, the sap-wood hardly distinguishable ; 

 occasionally used in the interior finish of houses, for wooden-ware, cooper- 

 age, and paper-pulp. 



Small quantities of maple sugar are sometimes obtained from this 

 species. 



68. Negundo Californicum, Torr. & Gray. 

 Box Elder. 



California, — valley of the lower Sacramento River, southward in the 

 interior valleys of the Coast Ranges to the western slopes of the San Ber- 

 nardino Mountains. 



A small tree, 6 to 12 metres in height, with a trunk 0.30 to 0.G0 

 metre in diameter ; borders of streams. 



Wood light, soft, not strong, close-grained, compact ; medullary rays 

 numerous, thin ; color nearly white, or slightly tinged with yellow ; 

 occasionally used in the manufacture of cheap furniture. 



