﻿Swamp Cottonwood, Swamp Poplar, Black Cottonwood 



Populus heterophylla L. 



showing staminate 



1. Portion of a twi 



aments x M> 



2. A staminate flower, lateral view x 

 o. Portion of a twig show in 



aments x % 

 4. A pistillate flower, axile view x 5 



r>. A twig showing mature leaves and fruit- 

 ing aments x Va 

 .. ., (i. Mature capsule x 2 



pistillate 7. Comose seed x 3 



s Winter twig x \<2 



