Poplar Swamp Poplar Cottonwood
=Habitat and Range.=--In or along swamps occasionally or often
overflowed; rare, local, and erratically distributed.
Connecticut,--frequent in the southern sections; Bozrah (J. N. Bishop);
Guilford, in at least three wood-ponds (W. E. Dudley in lit.), New
Haven, and near Norwich (W. A. Setchell).
Following the eastern coast in wide belts from New York (Staten
island and Long island) south to Georgia; west along the Gulf coast
to western Louisiana, and northward along the Mississippi and Ohio
basins to Arkansas, Indiana, and Illinois.
=Habit.=--A slender, medium-sized tree, attaining a height of 30-50
feet, reaching farther south a maximum of 90 feet; trunk 9-18 inches in
diameter, usually branching high up, forming a rather open hemispherical
or narrow-oblong head; branches irregular, short, rising, except the
lower, at a sharp angle; branchlets stout, roundish, varying in color,
degree of pubescence, and glossiness, becoming rough after the first
year with the raised leaf-scars; spray sparse.
=Bark.=--Bark of trunk dark ash-gray, very rough, and broken into
loosely attached narrow plates in old trees; in young trees light
ash-gray, smooth at first, becoming in a few years roughish, low-ridged.
=Winter Buds and Leaves.=--Buds conical, acute, more or less resinous.
Leaves 3-6 inches long, two-thirds as wide, densely white-tomentose when
young, at length dark green on the upper side, lighter beneath and
smooth except along the veins; outline ovate, wavy-toothed; base
heart-shaped, lobes often overlapping; apex obtuse; leafstalk long,
round, downy; stipules soon falling.
=Inflorescence.=--April to May. Sterile catkins when expanded 3-4 inches
long, at length pendent; scales cut into irregular divisions, reddish;
stamens numerous, anthers oblong, dark red: fertile catkins spreading,
few and loosely flowered, gradually elongating; scales reddish-brown;
ovary short-stalked; styles 2-3, united at the base; stigmas 2-3,
=Fruit.=--Fruiting catkins spreading or drooping, 4-5 inches long:
capsules usually erect, ovoid, acute, shorter than or equaling the
slender pedicels: seeds numerous, white-hairy.
=Horticultural Value.=--Not procurable in New England nurseries or from
collectors; its usefulness in landscape gardening not definitely known.
1. Winter buds.
2. Branch with sterile catkin.
3. Sterile flower.
4. Scale of sterile flower.
5. Branch with fertile catkin.
6. Fertile flower.
7. Fruiting branch with mature leaves.
=Populus deltoides, Marsh.=
Populus monilifera, Ait.
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