TAB. II. 



Fig. 13. DICKSONIA. a, b, Balantium ; c, Patania, 



Fig. 14. DEPARIA. a, fertile segment ; b, single sorus and invo- 

 lucre ; c, ditto cut through vertically. 



Fig. 15. LOXSOMA. a, fertile segment ; 5, sorus and involucre ; 

 c, ditto cut through vertically ; d, capsule and accompanying hairs. 



Fig. 16. HYMENOPHYLLUM. a, fertile portion ; b, sorus and invo- 

 lucre ; c, ditto cut through vertically ; d, capsule. 



Fig. 17. TRICHOMANES. a, fertile portion ; b, c, sori, involucres, 

 and columella or receptacle ; d } capsule. 



Fig. 18. DAVALLIA. a, a, Humata ; 6, sorus, the involucre 

 forced back ; c, Eudavallia ; d, Microlepia ; e, Loxoscaphe. 



Fig. 19. CYSTOPTERIS. a, fertile pinnule ; b, sorus covered by the 

 involucre ; c, sorus with the involucre forced back. 



Fig. 20. LINDSAYA. a, Eulindsaya, Gen. 20 bis. Fig. 20. b. c. 

 Dictyoxiphium, upper side, the sorus forced back showing the one- 

 lipped involucre ; c, small portion of the same, the sorus removed. 



V Fig. 21. ADIANTUM. a, fertile pinnule (in a few species the vena- 

 tion anastomoses) ; b, involucre forced back to show the sorus situated 

 on the involucre. 



Fig. 22. OCHROPTERIS. a, fertile portion ; b, involucre forced 

 back to show the sorus at the base of the involucre. 



Fig. 23. LONCHITIS. a, fertile portion ; b, single sorus. 



Fig. 24. HYPOLEPIS. a, fertile portion ; 6, single pinnule, with 

 sori. 



