158 



P. angnstifolia. VVir.LO\v Cottonwood. Black 

 Cottonwood. 



P. halsamifera. Balsam Poplar. Tacamahac, 

 Carolina poplar, Ontario poplar, rough-bark poplar. 



P. candicans. Balm-of-GilEad. 



P. ikltoidcs. Cottonwood. Necklace poplar, big 

 Cottonwood, yellow Cottonwood, cotton-tree, Carolina 

 poplar, water poplar, river poplar, alamo. 



P. grandidcntata. Large-TooTHEd AspEn. White 

 poplar. 



P. hctcrophylla. Downy Poplar. Swamp pop- 

 lar, swamp Cottonwood, river cottonwood, (balm-of- 

 gilead ) . 



P. nicjra. Black Poplar. Willow poplar, cat- 

 foot poplar, Mormon tree, devil's fingers, old English 

 poplar. 



P. tremuloidcs. American Aspen. Quaking ash, 

 (juaking asp, trembling poplar, American poplar, 

 (juiver-leaf, (white poplar, mountain ash). 



SALIX. Willow. 



S. alba. White Willow. Common willow, 

 European willow, duck willow, Himtington willow. 



S. aiuyydaloidcs. Peach-lEavEd Willow. Al- 

 mond-leaved willow, black willow. 



S. Bahylonica. Weeping Willow. Drooping 

 willow, ring-willow, garb-willow. 



S. discolor. Pussy Willow. Glaucous willow, 

 silver willow, swamp-willow, bog-willow. 



S. fragilis. Crack Willow. Brittle willow, 

 snap willow, stag's head, redwood-willow, varnished 

 willow. 



S. Iiiiiiiilis. Prairie Willow. Low willow, bush 

 willow. 



S. longifoUa. Sand-bar Willow. Narrow- 



