Mexican Cottonwood Poplar Tree
The Mexican Cottonwood (P. Mexicana, Wesm.) grows, a graceful, wide-spreading tree of medium size, along mountain streams near the Mexican border of Arizona and New Mexico. Its rhombic, long-pointed leaves are very coarsely toothed, and when they first unfold are dark red, soon becoming yellow-green and leathery. The bark is grey or almost white.