‘826 ARBORETUM ET FRUTICETUM BRITANNICUM. 
acladésca Lindl. in Enc. of Plants, p.840.; ? P. marylindica Bosc Nouv. Cours, art. Peuplier, 
p.409.; Virginian Poplar, Swiss Poplar, Canadian or Berry-bearing Poplar, Mild.; Peuplier 
Suisse, Peuplier bripbulon (see Nouv. Cours), Peuplier de Virginie, Dumont. t " 
Derivation. The epithet necklace-bearing alludes to the shape of the female catkins, which, in their 
capsules, and the manner in which these are attached to the rachis, resemble strings of beads. 
Swiss poplar, and black Italian poplar, allude to the tree being very abundant in Switzerland and 
the north of Italy. 
The Sexes. Both sexes are frequent in British collections, but the male is most abuudant. The 
female is figured and described by Watson (see Dend. Brit., t.102.), who has figured some pas 
of the male flower in the same plate. Both male and female are abundant in French gardens ; 
the male is known by the petioles of the leaves being red, while those of the female are white. 
Engravings. Michx. Arb., t.10. f.2.; N. Amer. Syl., 2. t.96. f.2.; Wats. Dend. Brit., 2. t. 102.; 
the plates of this tree in Arb. Brit. Ist edit., vol. vii.; and our jig. 1502. 
Spec. Char., §c. Shoot more or less angular. Branch round. Petiole 
slender, compressed in the upper part; in some leaves, shorter than the 
disk, in others longer. Disk deltoid, glanded at the base, which is sub- 
cordate in some leaves, and very obtusely wedge-shaped in others; tip 
acute ; edge serrated all round, except in the central part of the base, and 
at the acute tip; the teeth have incurved points; glabrous except in the 
edge, which, at least when the leaf is growing, is ciliate ; edge ultimately 
and perhaps early, gristly. Male flowers about 30 in a catkin, upon pe- 
dicels. Bractea glabrous. Stamens 16, a little longer than the corolla. 
Female flowers about 40 in acatkin. Stigmas 4, dilated, jagged. It is 
rather doubtful to what country this poplar is indigenous : Canada is given 
as its native country in the Hortus Kewensis ; but in the Nouveau dw Hamel 
it is stated to be a native of Virginia. Michaux, jun., states that neither he 
nor his father ever found it wild in America; and Pursh adds that he has 
only seen it in that country in gardens. According to the Hortus Kew- 
ensis, it was introduced into Britain by Dr. John Hope, in 1772. It is 
a tree, according to Pursh, from 60 ft. to 70 ft. high in America; but in 
Britain it grows to the height of 100 or 120 ft., or upwards; flowering in 
March, and ripening its seeds about the middle of May. Decaying leaves 
greenish yellow, or rich yellow. 
Varieties, 
# P. (n.) m. 2 Lindleyina Booth. The new waved-leaved Poplar, Hort. 
— Leaves rather larger than in the species, and they are somewhat 
more undulated. H. S. . g : 
* P. (n.) m. 3 foliis variegdtis Hort. — Leaves variegated ; conspicuous in 
early spring, but afterwards unsightly. 
P. monilffera is the most rapid-growing of 
all the poplars; and its timber is equal, if not 
superior, in quality to that of any other 
species. It comes into leaf, in the climate of 
London, in the last week of April, or in the 
beginning of May, long after the P. fastigiata, 
but about the same time as P. nigra, of which 
we believe it to be only a variety, about which 
time the male catkins have chiefly dropped off. 
The cottony seed of the female is ripe about the 
middle of May, and is so abundant, even in 
young trees, as to cover the ground under them 
like a fallof snow. The rate of growth, in the 
climate of London, on good soil, is between 
30 ft. and 40 ft. in 7 years ; even in Scotland 
it has attained the height of 70 ft. in 16 
years. The wood may be applied to the 
same purposes as that of the species pre- 
viously described ; but, being of larger dimen- 
sions, it may be considered as better fitted for being used in buildings. Pon- 
tey observes that the tree is not only an astonishingly quick grower, but that 
its stem is remarkably straight ; and that, with very trifling attention to side 
pruning, it may be kept clear of branches to any required height. For these 
1502. P. (n.) monilifera, 
