104 BOTANICAL MAGAZINE, tvoi. xvii, 



Fig. 4-9. Hirome undarioides. 



Fig. 4. Cross section of stipe, nat. size. The middle layer is built np 

 with filamentous cells ranniog longitudinally ; the greater part of 

 the both sides of it is filled up with parenchymatous cells which 

 become smaller and smaller and arranged radially to form the 

 peripheral layer. 



Fig. 5. Cross section of rachis, with sori on the both sides, moderately 

 magnified. 



Fig. 6. „ „ „ lamina, x 40. 



„ „ ,, sporophyll ; the content of the paraphyses is 

 granular mass. The subepidermal cells are filled with dark 

 brownish masses. x285. 



Cross section of sorus in lamina ; the paraphyses have the hyaline 

 yellowish masses, x 285. 



Cross section of sporophyll at the edge. The dark brownish content 

 is especially rich at the marginal partion. x ca. 25. 



Fig. 10-13. Champia expansa. 



Frond in natural size. 



A pair of bifid apices, x ca. 6. 



Cystocarp. 



Londtudinal section of the frond. x 100. 



Fig. 



7 



Fig. 



8 



Fio;. 



9 



Fig. 



10. 



Fig. 



11. 



Fig. 



12. 



Fio;. 



13. 



