Modulus of Elasticity.
1,360,000.
Modulus of Rupture.
10,200.
Remarks.
The several "poplars" are much prized for paper-pulp. The quaking aspen (P. tremuloides) has long leaf-stalks flattened vertically to the leaf-surface, so that leaves tremble in slight winds. [p084]
Cottonwood. Populus deltoides Marsh. Populus monilifera Ait.
Nomenclature. (Sudworth.)
Cottonwood (local and common name).
Carolina Poplar (Pa., Miss., La., N. M., Ind., Ohio).