TAB. VI. 



Fig. 49. JAMESONIA. a, portion of a frond, seen from above : 

 b, fertile pinna, seen from beneath ; c, jointed hair from among the 

 sori. 



Fig. 50. NOTHOCIIL^ENA. a, b, fertile portions ; c, smaller portion 

 of a more magnified. 



Fig. 51. MONOGRAMME. a t Eumonogramme, fertile portion ; 

 b, transverse section of the same through the sorus ; c, Pleuro- 

 gramme, fertile portion ; d, small portion of the same magnified, 

 and showing the venation. 



Fig. 52. GYMNOGRAMME. a, Eugymnogramme, fertile pinnule; 

 b, Stegnogramme, fertile portion ; c, Dictyogramme, fertile por- 

 tion ; d, Syngramme, fertile portion ; e, f, Selliguea, sterile 

 and fertile portions. 



Fig. 53. BRAINEA. a, 6, sterile and fertile portions. 

 Fig. 54. MENISCIUM. a, b, fertile portions. 



Fig. 55. ANTROPHYUM. a, 6, fertile portions, showing the sori 

 sunk in a groove j c, fertile portion, with the sori not sunk in a 

 groove. 



F ig. 56. VITTARIA. a, Euvittaria, fertile portion ; b, c, 

 Tseniopsis. 



Fig. 57. T^NITIS. a, fertile pinna ; b, magnified portion, showing 

 the venation. 



Fig. 58. DKYMOGLOSSUM. a, sterile and fertile frond ; 6, portion 

 of the fertile, and c, portion of the sterile frond magnified. 



Fig. 59. HEMIONITIS. a, Euhemionitis, fertile portion ; 6, 

 Anetium, fertile portion. 



