S ) ; Pinnatifid Frond. Pinnate Frond. 
ene ie . Ceterach. . Sea Spleenwort. 
Bipinnate Frond. 
Royal Fern. 
Indusium. 
Bladder Fern. 
Sporange. 
Male Fern. 
Decompound Frond. Circinnate Vernation. Straight Vernation. Indusium. 
Sorus. 
Black Spleenwort. Male Fern. Adder's-tongue. 
Hart’s-tongue. Bladder Fern. 
Antherozoid. 
- 
Germinating Prothallus. Prothallus. Archegonium. Young Royal Fern 
Lea a More advanced. with remains of Prothallus. 
Maic Fern, 
Pl. #. 
