148 SILVA OF NORTH AMERICA. SALICACEE. 
The wood of Salix Hookeriana is light, soft, and close-grained ; it is light brown tinged with red, 
with thin nearly white sapwood, and contains thin very obscure medullary rays and numerous minute 
open ducts. The specific gravity of the absolutely dry wood is 0.5350, a cubic foot weighing 33.34 
pounds. 
Salix Hookerivana was discovered by Dr. John Scouler during his visit to the northwest coast in 
the years 1825-1827." 
1 See Bebb, Bot. Gazette, xiv. 53. 
EXPLANATION OF THE PLATE. 
Pirate CCCCLXXXV. Sarrx HooKeriANna. 
. 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. 
. A capsule, enlarged. 
NanPRwON 
. A summer branch, natural size. 
