PLANE 



99 



catkin ; 10, one of its scales bearing two female flowers, seen separately 

 in 11 ; 12 14, fruiting scales seen from above, from below and from 

 the front ; 15, 16, the fruit whole and in section ; 17, ripe cone-like 

 fruiting catkins ; 18, one of the cone-like catkins after shedding its fruits ; 

 19, a twig ; 20, section of branch (Wi). 



Fig. 96. A, shoot of Platanus occidentalis ; a, male, and fc, female 

 flowers ; n, stipules ; B, female flower magnified ; C, male flower with 

 stamens removed ; D, floral diagram, theoretical ; E, ovary ; F, ovary in 

 section ; G, fruit (caryopsis) ; H, glandular hair ; J and K, ordinary hairs 

 of leaf ; L and M, hairs at base of fruit (E and P). 



72 



