648 ARBORETUM ET FRUTICETUM BRITANNICUM. 
The buds are of a deep blue, and the young shoots are 
sprinkled with dots of the same colour, which disappear as the 
season advances. The leaves, at their unfolding, are accompanied 
by scales, which fall after two or three weeks: they are 12 or 
15 inches long when fully developed ; and the leaflets are sessile, 
of a deep green colour, smooth on the upper surface, and coated 
with red down on the main ribs beneath. When bruised, they 
emit an odour like that of the leaves of the elder. The sa- 
maras resemble those of the blue ash (/. quadrangulata), and 
are nearly as broad at the base as at the summit. The black 
ash is easily distinguished from the white ash by its bark, 
which is of a duller hue, less deeply furrowed, and has the ~ 
layers of the epidermis applied in broad sheets ee at 
¥ 12. F.(a.) quaprancuLa‘ta Miche. The quadrangular-branched Ash. 
Identification. Michx. Fl. Bor. Amer., 2. p. 255.; Pursh Sept., 1. p. 8.; Don’s Mill., 4. p. 55. 
Synonymes. F tetragdna Cels ex Dum. Cours. ; F. quadrangularis Lodd. Cat. ed. 1836; blue Ash, 
Shae: Michx. N. Amer. Syl., 3. t. 123. ; and our jigs. 1259. and 1260. 
Spec. Char. Sc. Leaflets almost sessile, elliptic-lanceolate, serrated, downy 
beneath. Samara blunt at both ends. Branches quadrangular. (Don’s 
Mill.) A deciduous tree. Ohio, Kentucky, and Tennessee. Height 60 ft. 
to 70 ft. Introduced in 1823. Flowers greenish yellow ; May. 
Variety. 
+ F. (a.) q. 2 nervosa Lodd. Cat. ed. 1836.— Leaves with conspicuous 
nerves. 
The leaves are from 12in. to 18 in. 
long, and are composed of 2, 3, or 4 
pairs of leaflets, with an odd one. 
The leaflets are large, smooth, oval- 
acuminate, distinctly toothed, and sup- 
ported by short petiolules. The young 
shoots to which the leaves are attached 
are distinguished by 4 opposite mem- 
branes, 3 or 4 lines broad, and of a 
greenish colour, extending through 
their whole length. This 
character disappears in the 
third or fourth year, leaving 
only the traces of itsexist- 
ence. The seeds are flat 
from one extremity to the 
other, and a little narrowed 
towards the base. Readily 
distinguished from all the 
other varieties of American 
ash, as far as we have been 
able to observe these in the [/ 
neighbourhood of London, by 
the bark of the trunk, which 
: cracks and separates at the 
Vesg:. ella) quadrangulbte. edges into thin plates, much 
in the same way as that of the white American oak (Quércus alba). 
* 13. F. (a.) sucianpiro‘i1a Lam. The Walnut-leaved Ash. 
Identification. Lam. Dict., 2. p. 543.3 Pursh Sept., 1. p. 9.; Don’s Mill., 4. p. 55. 
Synonymes. F. viridis Meche. N. Amer. Syl. 3. p. 65. t. 120.; F. concolor Muhi.; the green Ash, 
Michz. ; western black Ash, Push. Y 
Engravings. Michx. N, Amer, Syl., 3. t. 120.; the plate in Arb. Brit., Ist edit., vol. vi.; and our 
figs. 1261. and 1262. 
