Populus heterophylla swamp cottonwood Salicaceae POHE; R, t (1 clone);

   

Populus grandidentata.leaves and fibers around fruit.Copyright.©.2014.Donald Cameron.New England Wild Flower Society.gobotany.newenglandwild.org (Accessed 9/2014).

Populus grandidentata.leaves and fibers around fruit.Copyright.©.2014.Donald Cameron.New England Wild Flower Society.gobotany.newenglandwild.org (Accessed 9/2014).

Populus heterophylla is a colonial tree, with many similar sized stems close together, bark deeply furrowed, gray-brown. 

Leaves broadly egg-shaped, large, about 18 cm long, tip blunt, base lobed, margin toothed, petiole only slightly flattened near top. 

Flowers sexes on separate individuals (dioecious) catkins. 

Fruits dry, oval, about 1 cm long.in cottony fibers. 

Wetland status: FACW+. 

Frequency in New York City: Rare (NYS S1, T). A colony of one individual. 

Origin: Native. 

Habitat: Open margins of swamp forest or marsh edges, soil pH 4.6-5.9 (USDA, NRCS 2010). Intolerant of shade.