@. 60} CLASSIFICATION AND DESCRIPTION 123 
C. Branchlets round and pubescent ................... 2. 
C. Branchlets round and smooth. (D.) 
D. Leaflets nearly entire ............ 0. wee eee eee 1. 
D. Leaflets serrate near tip, entire below.............. 3. 
C. Branchlets, on vigorous growths, square.............. 4, 
A. Leaves pinnate; leaflets sessile; no calyx. (E.) 
E. Native; wing of fruit rounded at tip... ..... cohen Gs 
E. Cultivated from Europe; wing notched at tip....... 7. 
A. Leaves simple; variety under 7. 
1. Fraéxinus Americana, L. 
(Waiter Asu.) Leaflets 7 to 9 (usu- 
ally 7), stalked, ovate or lance-ob- 
long, pointed, shining above, pale 
and either smooth or pubescent be- 
neath, somewhat toothed or entire. 
Flowers almost always diccious 
(May), thus the fruit is found on 
but a portion of the trees. The fruit 
(August to September) terete and 
marginless below, abruptly dilated 
into the wing, which is 2 to 3 times 
as long as the terete portion; entire 
fruit about 144 in. long. A common 
large forest-tree, 60 to 80 ft. high, 
with gray, furrowed bark, smooth, grayish-green branchlets, and 
rusty-colored buds. Extensively cultivated. 
2. Fradxinus pubéscens, Lam. (RED 
Asu.) Like the White Ash, but to be dis- 
tinguished from it by the down on the 
young, green or olive-green twigs, and on 
the footstalks and lower surface of the 
leaves. Fruit acute, 2-edged at base, grad- 
ually dilated into the wings as in Frax- 
inus viridis. A smaller and more slender 
tree than the White Ash; growing in about 
the same localities, but rare west of the 
Alleghanies; heart-wood darker-colored. 
3. Frdxinus viridis, Michx. f. (GREEN 
F. pubéscens. AsH.) Smooth throughout; leaflets 5 to 
9, bright green on both sides, ovate or oblong-lanceolate, often wedge- 
shaped at base and serrate above. Fruit acute and 2-edged or mars 
