79 



Fig. 144. Marattiales. A, Angioptcris longifolia; proximal face (surface and 

 optical section; x 1000). B, Macroglossuin alidae; proximal face (surface 

 and optical section; x 1000); C, Archangiopteris henryi; proximal face (sm-- 

 face and optical section; x 1000). D, Christensenia aesciilifolia; proximal face 

 (surface and optical section; x 1000); to the left two spores in lateral, trans- 

 verse and lateral, longitudinal view (x 250). E, Marattia fraxinea; proximal 

 face (surface and optical cross-section; x 1000); to the left two spores in 

 transverse lateral and in longitudinal lateral view (x 250). F, Danaea elliptica; 

 lateral, longitudinal view (x 1000), proximal face (x 250) and sclerine 

 stratification (x 2000). (From Erdtman in Svensk hot. Tidskr. 1954.) 



