TABLE OF THE 
ORDERS, TRIBES, AND GENERA OF FERNS 
AS FOLLOWED IN THIS WORK. 
ORDER FILICES, 
SUB-ORDER I.— GLEICHENIACEiE. 
Capsules opening vertically, surrounded by a broad 
transverse complete ring ..... 
SUB-ORDER II.— POLYPODIACEA^. 
Capsules surrounded by a jointed, vertical and elastic 
ring. 
A. Involucrat^. Sori with an indusium, except 
in Alsophila. 
TRIBE I.-CYATHE^. 
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 
Indusium a cup-like scale below the sorus, but neve 
quite covering it, veins free .... 
Indusium none 
Receptacles not elevated, indusium inferior globose 
Indusium umbrella-shaped, six-lobed 
Genus. 
Gleichenia 
Page. 
2 Cyathea . 
3 Amphicosmia 
4 Alsoph[t.a 
5 DiACALPE . 
6 Matoisia . 
5 
8 
II 
T9 
