LYCOPSIDA 93 



multiflagellate, like those of Isoetes and Stylites. One thing 

 is fairly certain — that Selaginella is not a direct descendant 

 of the Lepidodendrales. Apart from this, one's views on the 

 relationships of the Lycopsida must depend upon a decision 

 as to whether the ligule is more significant phylogenetically 

 than the number of flagella. 



