84 



ORMOLOMA (Fig. 154 A), ORTHIOPTERIS (Fig. 154 R): 



Fig. 154. A, Ormoloma imrayana; lateral view (x 250), distal face (xlOOO), 



and sclerine stratification (x 2000). B, Orthiopteris imieqiinlis; proximal face 



(X 1000), exine stratification (x 2000), and— to the left— spore in lateral 



view ( X 250) and proximal face of an aberrant spore ( x 250). 



ORTHIOPTERIS: see Fig. 154 B. 



OSMUNDA (Fig. 155 A-E), LEPTOPTERIS (Fig. 155 G), TODEA (Fig. 

 155 F):— 



I 





10/U 



pum 



"• .1 fiiii '■ ■■■■•■ ■ ' 







m 



:\-'.^^'^''^ :^^ '^^^^^^ 



B 



D 



Fig. 155. Osmundaceae, exine stratification (x 2000). A, Osmunda cinna- 

 momea, part of exine in proximal face (with laesm-a). B-G, part of exine in 

 distal face; B, Osmunda regalis (subgen. Euosmunda); C, 0. banksiifolia 

 (subgen. Pleasiiim); D, 0. cinnamomen (subgen. Osmundastrum); E, 0. 

 claytoniana (subgen. Osmundastrum); F, Toden barbara; G, Leptopteris 



superba. 



