540 



LIFE-HIST()RIE8 



<^:755^i 'ry^-c^-- 



S-»*Wi 



^""S 



mi ft ' 



1 , '■■ 



F L 



r 



I H 



t H 



I / 1 



/ h 



M I lillll ' 

 I 1 E 



Fui. 307. — Tree-Fern. Section of trunk. A wedge out from the same, 

 magnified to show the pith (P), a fibrovasoular bundle (I' F V) with 

 its selerenc-hyma (F B) and ve.ssels {V S), and the rind (F L) and 

 epidermis (/J). (Baillon.) 



Fici. 368. — Fern Brood-bud (Aspidiiim FUix-mas) on base of leaf-stall<, j. 



(Lucrssen.) 



