eastern cottonwood: a common poplar of eastern and central United States; cultivated in United States for its rapid growth and luxuriant foliage and in Europe for timber
cottonwood: any of several North American trees of the genus Populus having a tuft of cottony hairs on the seed
taxopsida: yews: in some systems classified as a class (Taxopsida) and in others as a subdivision (Taxophytina) used in some classifications for one of five subdivisions of Gymnospermophyta