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 segmeui; b, sorus and involucre; 

 c, ditto cut through vertically ; d y 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; b, sorus, the involucre 

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



Fig. 19. CYSTOFTERIS. 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. 



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 ; b, single pinnule, with 

 sori. 



