PI. II 





m WW f% # 



.1^'^ 

 ' / 



r 



1 



Ephedra niuiwspenud; seclion through j)arl of tlu- iniuT laniinalcd layer of 

 an at-etolyzed ])ollen ^valI (the inner part of the pollen grain is to the left; 

 the black horizontal line indicates 1 /^i). x 93,()0(). (EMG; from Afzelius in 



(irana palynologica, 1: 2, 1956.) 



