128 SILVA OF NORTH AMERICA. SALICACE. 
southward through western Washington and Oregon, where it appears to have been discovered by 
Thomas Nuttall’ on the Willamette River, and along the western slopes and foothills of the California 
Sierras to the valleys and foothills of the coast ranges of the southwestern part of the state, where it 
is one of the commonest Willows.’ 
The wood of Salix sessilifolia is light, soft, and close-grained ; it contains thin obscure medullary 
rays, and is light red, with thin nearly white sapwood. The specific gravity of the wood of a tree from 
the region adjoining the mouth of the Willamette River in Oregon is 0.4397, a cubic foot weighing 
27.40 pounds. 
1 See ii. 34. 2 S. B. Parish, Zoé, iv. 347. 
EXPLANATION OF THE PLATE. 
Puate CCCCLXXV. SatLtix SESSILIFOLIA. 
. A flowering branch of the staminate tree, natural size. 
A staminate flower with its scale, front view, enlarged. 
A flowering branch of the pistillate tree, natural size. 
. A pistillate flower with its scale, front view, enlarged. 
. A fruiting branch, natural size. 
oo RP Oh 
A capsule, enlarged. 
