837 



and we have been at infinite pains to extract the following synopsis 

 from the pages of the work itself: — 



Order I.— FILICES. 



Suborder T.— GLEICHENIACE^. 



[Genus] 1. — Platysoma, Br. 

 [Genus] 2. — Gleichenia, Br. 

 Subgenus I. — Eugleichenia. 

 Subgenus II. — Mertensia. 



§ I. Stipes forked, branches bipinnate. 

 § II. Fronds dichotomous (rarely sim- 

 ple) pinnatifid: in other words the 

 leafy portion is not confined to the 

 forked apices, but is decurrent more 

 or less upon the branched portion of 

 the stipes. 

 § III. Stipes simple, and bearing sim- 

 ply forked pinnae ; or dichotomous, 

 the branches zigzag, bearing alter- 

 nate branchlets, each with simply 

 forked or only one pair of pinnae. 

 Segments never decun-ent. 

 § IV. Stipes repeatedly di- or trichoto- 

 mous, the ultimate branches bearing 

 simply forked pinnae : a pair of pinnae 

 also arise from the base of the di- or 

 trichotomy of the branches (not of 

 the frond). Segments never decur- 

 rent. 



Suborder IL— POLYPODIACE.E. 

 Tribe I.— CYATHE^. 



[Genus] 1. — Cyathea. 



Subgenus T. — Notocarpia. 



Subgenus II. — Eucyathea. 

 [Genus] 2. — Hemitelia. 



* Fronds pinnate. 

 ** Fronds bipinnate or decompound. 



[Genus] 3. — Alsophila. 

 Subgenus I. — Metaxya, 

 Subgenus II. — Trichopteris. 

 Subgenus III. — Eualsophila. 

 Vol. II. 5 m 



