Tab. IV. 



Fig. 34. Blecunum. — a, fertile pinna, witli sori remaining on one 

 riide, cleared away from the receptacle on the other. 



Fig. 35. Sadlekia. — a, fertile pinnule ; h, portion of the same 

 enlarged. 



Fig. 36. WooDWARDiA. — a, fertile pinnule ; 6, portion of pinnule 

 of § Lorinseria. 



Fig. 37. DooDiA. — a, b, portions of fertile pinnae. 



Fig. 38. AsPLENiUM. — a, § Euasplenium ; b, c, § Darea; e, § Athy- 

 rivim ; d, /, § Diplazium ; g, § Anisogoniam ; h, § Heraidictyum : 

 all, portions of the frond to show the fructification and venation. 



Fig. 39. Allantodia. — a, portion of fertile pinna, with outer 

 veins ; b, inner half of the same enlarged. 



Fig. 40. AcTiNioPTERis. — a, entire frond ; b, fertile segment ; c, the 

 time, with the involucres rolled back. 



Fig. 41. ScoLOPENDRiUM. — a, § Euscolopendrium ; b, § Anti 

 gramme ; c, § SchafFneria ; d, § Camptosorus ; portions of the frond, 

 to show fructification and venation. 



Fig. 42. DiDYMOcHLitNA. — a, fertile pinnule ; b, single sorus, 

 enlarged. 



