230 



FOEEST TEEES OF THE PACIFIC SLOPE. 



diameter. Nothing is known now of the trunk form, crown, bark, and wood, 

 which need to be studied. Young twigs (fig. 96) are densely white-woolly, but 

 in two or three years this covering goes off, and the dark red-purple bark is 

 exposed. Mature leaves (fig. 97) are light yellowish-green, nearly or quite 



Fig. 96. — Salix amplifolia: a, male flowers; b, female flowers; c, seed-bearing branch. 



smooth on their top sides (sometimes slightly woolly) and whitish beneath; 

 young and immature leaves are more or less densely white-woolly on both sur- 

 faces, the wool gradually disappearing with age later in the season. 



