TABLE OF THE 



ORDERS, TRIBES, AND GENERA OF FERNS 



AS FOLLOWED IN THIS WORK. 



ORDER FILICES. 



Genus. 



i Gleichenia 



SUB-ORDER I.— GLEICHENIACE/E. 



Capsules opening vertically, surrounded by a broad 

 transverse complete ring ..... 



SUB-ORDER II.— POLYPODIACEAiE. 



Capsules surrounded by a jointed, vertical and elastic 

 ring. 



A. Involucratve. Sort with an indusium, except 

 in A hop hi la. 



TRIBE I.— CYATHE.E. 

 Sori globose, capsules sessile or stalked, often on 

 a raised receptacle. Indusium (wanting in Alsophila) 

 inferior, including the sorus, lateral and resembling 

 a scale, or cup-shaped, often when young enveloping 

 the sorus, eventually opening at the summit, or 

 breaking down with a more or less regular margin, 

 caudex generally arborescent. 



Receptacle elevated, indusium globose, inferior, quite 

 covering the sorus when young .... 2 Cyathea . 



Indusium a cup-like scale below the sorus, but never 

 quite covering it, veins free 3 Amphicosmia 



Indusium none 4 Alsophila 



Receptacles not elevated, indusium inferior globose . 5 DiACALrE . 



Indusium umbrella-shnperi, six-lobcl ... 6 Matonia . 



Page. 



5 



8 

 1 1 



iS 

 10 



