TAB. TX. 



Fig. 68. LYGODIUM. a, portion of barren frond ; b, d, portions 

 of fertile frond ; c, Lygodictyon, barren portion. 



Fig. 69. ANGIOPTERIS. a, cluster of capsules ; b, pair of capsules 

 and section of frond ; c, single detached capsule. 



Fig. 70. MARATTIA. a, b, portions of frond, with a single multi- 

 locular receptacle ; c, vertical section of receptacle. 



Fig. 71. DAN.EA. a, portion of fertile frond ; b, section of recep- 

 tacle ; c, spores. 



Fig. 72. KAULFUSSIA. a, portion of fertile frond ; b, c, detached 

 receptacles ; d, spores. 



Fig. 73. OPHIOGLOSSUM. a, complete plant j b, barren portion; 

 c, fertile portion ; d. spores. 



Fig. 74. HELMINTHOSTACHYS. a, nearly complete plant ; b, portion 

 of barren frond ; c, d, portions of fertile frond. 



Fig. 75. BOTRYCHIUM. a, complete plant ; b, barren portion ; 

 c, fertile portion ; d } spores. 



