Cassell's European Ferns. 
Vincent Bkcfpto Day & j>on 
A. PTERIS LONGI FOLIA (L.) B. PTERIS ARGUTA.^ Ait) C. PTERIS CRETICA.f/J 
(To natural size) 
PORTION OF PI N N U LE (nat. size) a PORTION OF BARREN PI N NULE, UPPER SU R FACE < nat. size) a. PORTION OF PINNULE nat.s,ze) 
b. PORTION OF FERTILE PI N N ULE, U N D ER SU R FA CE.( n at.size) 
