17. 
If. Ferns or leafless plants -with three angled steals 
A. Plants bearing scalelike "leaves" or appendages but appearing 
leafless from a short distance. .... Pallotaeeae 
Psilotusa nudum (L) Gri3eb 
Plants bearing fronds... 
E. Fruiting bodies borne in clusters (sori) arranged In dots, 
lines, or larger areas on the lower surface of the frond; 
plant growing on the ground or sane on supports; fertile 
and sterile fronds stellar 
C. Tip of frond coiled at maturity..... I leplnrolepi s 
CC. Tip of frond not coiled at maturity 
