PLATE L. SMOOTH ALDER. 



(s) staminate catkins, 



i. 



■\Vmter branch showing buds, 



A mature steminate catkin. : 



Mature pistillate catkins, s i, 



Branch with leaves and tniit, x i. 



Branch with mature fruit strobiles, x i. 



A strobile scale with seeds, slightly enlarged. 



A winge<! seed, enlarged. 



Section of winter branch showing stalked bud, 



enlarged. 

 A leaf-scar, enlatsed. 

 Cross section of branch showing triangular pith 



(p) pistillate catkins, x }. 



lenticels. leaf-scar with bundle-scars, slightly 



enlarged. 



