PI. III. 



^:^^ 



^sSb^^ 



Liicojxxliuiu cldiHituin and SehujinvUd sehu/inoidcs. rpjier (iguri': scclioa 

 through the exine in Lijcopodium cUiihiIuiu. An oulcr laminated and an inner 

 granuhited layer can l)e seen. EMG B. M. Afzehus ( 40, ()()()). Lower figure: 

 section through part of the exine of a megaspore of Selnqinella sekiginoides. 

 EMG B. M. Afzehus ( < 12,500). (From Svensk hot. Tidskr., vol. 48, 1954.) 



