ALTERNATING GENERATIONS 



Lycopodinm cermium, L., var. Eichleri, Glaz. A, general habit (\ natural size); B, 

 end of a branch (natural size) ; C, strobilus ( x 3) ; D, sporopbyll seen from above ; , 

 ditto, from the side (xao). (After Pritzel, in Engler and Prantl. Nat. Pflanz.) 



