Tab. YL 



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. NoTHOCHL^NA. — a, b, fertile portions ; c, smaller portion 

 of a more magnified. 



Fig. 51. MoNOGRAMME. — a, § Eumonogramuie, 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, fex'tile portion ; e, /, § Selliguea, sterile 

 and fertile portions. 



Fig. 53. Bkainea. — a, b, sterile and fertile portions. 

 Fig. 54. ]\Ieniscium. — a, h, fertile portions. 



Fig. 55. Antrophyum. — a, h, fertile portions, showing the sori 

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

 groove. 



Fig. 56. ViTTARiA.— (s, § Euvittaria, fertile portion; h, c, 

 § Tseniopsis. 



Fig. 57. T^NiTis.— a, fertile pinna; 6, magnified portion, showing 

 the venation. 



Fig. 58. Drymoglossum. — a, sterile and fertile frond ; b, portion 

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



Fig. 59. Hemiokitis. — a, § Euhemionitis, fertile portion ; 6, 

 § Anetium, fertile portion. 



