eastern cottonwood (Populus deltoides Bartr. ex Marshall)

Populus deltoides subsp. deltoides

Populus deltoides subsp. wislizeni (S. Watson) Eckenw.

plains cottonwood (Populus deltoides subsp. monilifera (Ait.) Eckenwalder)

Populus deltoides × Populus × Populus canadensis

Populus deltoides subsp. wislizenii (S. Wats.) Eckenwalder

Populus deltoides W. Bartram ex Marshall

Rio Grande cottonwood (Populus deltoides wislizeni)

Populus deltoides × Populus nigra

Populus deltoides × Populus simonii

Populus trichocarpa × Populus deltoides

Populus deltoides × Populus tremuloides

Populus deltoides × Populus maximowiczii

Populus deltoides ssp. monilifera

Populus deltoides var. monilifera × Populus tremuloides

NO NAME!

Populus deltoides W. Bartram ex Marshall

Populus deltoides ssp. monilifera (Aiton) Eckenw.

eastern cottonwood (Populus deltoides Bartram ex Marsh. ssp. deltoides)

Fremont cottonwood (Populus fremontii subsp. mesetae J. E. Eckenwalder)

Populus deltoides deltoides

Populus fremontii subsp. fremontii

Poplar (Populus)