A. 



Fig. 227. — A, Upper part of a fertile shoot of E. telmateia, x i ; K, lower part of a vegetative shoot, 

 with young branches for the next season's growth, x i ; T, tubers ; C, cross-section of an inter- 

 node of the fertile shoot, X4; L, cortical lacunae ; D, sporangiophores, X4; E, median section 

 of a single sporangiophore, X 6 ; sp, sporangia. 



