46 



ACROSTICHUM:- 



.^-a 



Fig. 74. Acrostichiuu aureuiu f. hastaefoliiiin. Sclerine stratification ( >- 2000). 



a, perine; b, cf. sexine; c, cf. nexine. 



ACTINIOPTERIS: 



Fig. 75. Actiniopteris aiistralis. Spore in lateral view (left; x 250); proximal 

 face, surface (a) and optical section (b + c; in b the contours of the verrucae 

 in the distal face are marked; the faint nick in the nexine is quite acciden- 

 tal; X 1000). 



ADIANTOPSIS: 



(?) 



'"mm 





'f^^AV^v""'" 



Fig. 76. Adiantopsis chlorophylla. From left to right: spore in lateral view 

 (X 250); proximal face (x 1000; surface and optical section); LO-patterns. 



