47 



ADIANTUM:— 



Fig. 77. Adiantum reniforme. Proxi- 

 mal face, surface (left) and optical 

 section (right; x 1000). 



ALSOPHILA:— 



^ 





"S ■•'.". '■V/.'^^.v-.i'' .3-. 



0'i«( 



i.'vKfiv" 



Fig. 78. Alsophila glabra; a, sclerine stratification (x 2000); b, spore, lateral 

 view (X 250); c, distal face (x 1000), surface (left) and optical section 



(right); d^ and do, LO-patterns. 



AMPHIDESMIUM:— 



Fig. 79. Amphidesiuiiim bleclinoides. Distal 



face (X 1000), surface (left) and optical 



section (right). 



