192 ENGLISH BOTANY. 
SPECIES T—POPULUS ALBA. Linn. 
Prares MCCXCIX. MCCC. 
Young barren branches densely felted, hoary. Buds all downy, not 
viscous ; flower-buds ovoid ; leaf-buds ovoid-conical. Leaves roundish- 
deltoid or rhombic-orbicular, angulated or lobed, cottony white or 
greyish-white beneath, at least when young; those of the suckers ovate 
or roundish-deltoid, coarsely toothed or lobed, cordate at the base, 
permanently white or grey and cottony beneath. Male catkins cylin- 
drical; female catkins oblong while in flower. Catkin-scales ciliated, 
those of the male catkins laciniate, of the female crenate or more or 
less deeply toothed or sublaciniate. 
Sup-Srecies 1—Populus eu-alba. 
Prats MCCXCIX. 
Reich. Ic. Fl. Germ. et Helv. Vol. XI. Tab. DOXIV. Fig. 1270, 
P. alba, Auct. Plur. 
P. alba, var. «, Bromf. in Fi. Vect., p. 460. 
Young branches and buds densely cottony and white. Leaves of 
the suckers or young plants deltoid-ovate, with large lobes, at first 
flocculent-pubescent above, afterwards glabrous, always densely cot- 
tony and pure white beneath; leaves of the flowering shoots roundish 
deltoid, angulated and sinuate-dentate, permanently pure white be- 
neath. Scales of the female catkins “crenate at the apex” (Koch). 
“ Stigmas bipartite, yellow ” (Arn.). 
In most woods and meadows, and beside rivers. Rather scarce, 
but generally distributed in England, though doubtfully native. Ac- 
cording to Dr. Graham, it does not flower about Edinburgh, so that 
there is no probability of its being native in Scotland. In Ireland it 
occurs only where planted. 
England, [Scotland, Ireland.] Tree. Spring. 
A large tree sending up numerous suckers. Bark rather smooth, 
rey. Branches spreading. Leaves on the young shoots 2 to 4 inches 
long, with triangular lobes, those on the flowering shoots and spurs 
smaller and rounder, less white beneath, and said to be sometimes 
glabrous beneath when old. Male catkins pendulous, 3 inches long, 
with brown scarious laciniate scales, ciliated with long white hairs. 
The fertile catkins I have not seen. 
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