65 



HYMENOLEPIS: 



m 



a 



i if 



IB- ■ iSi 



Fig. 118. Hymenolepis spicata. From left to right: lateral, longitudinal view 



(x 250); distal face (x 1000); a-c, exine stratification showing the successive 



increase in thickness ( x 2000); LO-patterns. 



HYMENOPHYLLOPSIS (Figs. 119, 120):— 



'^ Al^^}%/ 











iMg. 119. HywenophijUopsis asplenioides, proximal face, surface and optical 

 cross-section (x 1000). In some spores the sclerine stratification appears 

 as indicated at a, and in other spores as indicated at b. 



