50 FOREST TREES. 
me to decide this point. It is considered by many a 
more ornamental tree than the Common Sugar Maple. 
5. Acer negundo (Negundo aceroides..\—Box Elder, 
Ash-leaved Maple. 
Leaves, pinnate and ternate, unequally serrate; 
“flowers, dicecious; calyx, four to five-cleft; petals, 
none; stamens, four to five. 
This species, in favorable situations, becomes a 
stately tree, reaching the height of fifty or sixty feet. 
It is most common along the banks of streams. It 
is very hardy, being abundant about the Red River of 
the North as far as latitude 54.° In rich soil its 
prowth when young is astonishingly rapid, even sur- 
gassing that of the Silver Maple. In very dry soil 
it is short lived. Sugar may be made from its sap, 
which is abundant. This, and its very rapid growth, 
have induced some to recommend its culture for the 
production of sugar. The quality of its wood is 
similar to that of the Silver and Red Maples. Itisa 
beautiful ornamental tree with dense foliage, and, 
when standing singly, a round symmetrical head. 
Its rapid growth renders it desirable for planting 
where it is an object to produce an effect in the short- 
est possible time. The seed, a large proportion of which 
is sometimes abortive, ripens in the fall, and is treated 
like that of the Sugar Maple. 
6. Acer Pennsylvanicum—HMoose wood, Striped 
Maple. 
Leaves, three-lobed at the apex; double serrate; 
the short lobes taper-pointed and also serrate; 
