16 



HAZEL 



[CH. 



Fig. 13. Hazel, Corylus Avellana. 1, twig with <? and ? flowers ; 

 2, leaf and nearly ripe fruits ; 3, scale, bearing <? flower ; 4, a stamen ; 

 5, female flower invested by the young involucre ; 6, sections through 

 ovary; 7, 8, nuts ; 9, 10, kernel (embryo) (Wi). 



