BLACK WILLOW. 



Sali.i nigra. 



Common throughout the State. Some 50 feet high, 14 inches in 

 diameter. 



NARROW or LONG-LEAVED WILLOW. SAND-BAR WILLOW. 



RING WILLOW. 

 Salix langifolia or S. fluviatilis. 



Found throughout the State. Very abundant along the -and- of 

 the Canadian and Cimarron. There is a variety with curly leaves 



in cultivation. 



THE POPLARS. Genus POPULUS. 



Populus, from Pallo, to shake or vibrate, or from Roman derivation, arbor 

 populi. tree of the people. 



WHITE POPLAR. ABELE TREE. SILVER-LEAF POPLAR. 



Populus alba. 

 In cultivation in parks and lawns. 



COTTONWOOD. NECKLACE POPLAR. CAROLINA POPLAR. 



Populus deltoidcs. 



Common throughout the State along streams and widely planted 

 for shade. 



WESTERN COTTONWOOD. 

 P. deltoidcs occidentalis. 



A western form of the Cottonwood, its range in the State is not 

 determined. 



LOMBARDY POPLAR. 



Populus nigra Italica or P dilatata. 

 In cultivation to some extent throughout. 



SWAMP POPLAR. DOWNY-LEAVED POPLAR. 



Populus hctcrophylla. 

 In lowlands southeast corner oi State. 



LANCE-LEAF COTTONWOOD and NARROW-LEAF COTTONWOOD 

 Populus acuminata. Populus angustifolia. 

 These two poplars occur to the westward of the Panhandle of 



