INDEX TO TECHNICAL TERMS 



ANTHERIDIA, 34 



Archegonia, 34 



Alternation of generations, 33 



Asexual generation, 34 



FROND, 28 

 Fertile frond, 3 

 Fertilization, 34 



INDUSIUM, 31 

 ONCE-PINNATE frond, 30 



PINNATIFID frond, 29 

 Pinnae, 30 



Pinnules, 30 

 Prothallium, 34 



RACHIS, 30 

 Rootstock, 28 



SEXUAL generation, 33 

 Simple frond, 29 

 Sori, 30 

 Sporangia, 30 

 Spore, 30 

 Sterile frond, 31 



TWICE-PINNATE frond, 30 

 VEINS, free, 30 



215 



