[10] 92 FLOWERING PLANTS 



Woody (Arboreal) Stems (continued). 



F. Draw a portion of the outer tissues of a transverse section of the twig of Ailanthus under the high power 

 to shew the development of cork from the cork-cambium. 



G. Examine the piece of willow branch provided. Observe the lenticels seen on its surface. Peel it and 

 note that the outer part separates at the line of the cambium. 



