llxlT. SBKKEA OS KRBKS.- 



fertile, the rest angularly or arcuately anastomosing (in one or 

 more, frequently several series), and producing from their angles 

 free exourrent veinlets which are often fertile; the marginal 

 Teinlets free. 



Fronds simple pinnatifid or pinnate, herbaceous or coriaceous, 

 sometimes scaly, the fertile often much narrower. Son trans- 

 versely uni- bi- or tri-serial, sometimes squamiferous ; the so- 

 riferous excurrent veinlet in &, mimmidariam hardly developed. 

 Khizome creeping, the fronds articulated. — A tolerably weU- 

 defined group, yet merging into Fhleiodium through some aber- 

 rant species in which the free fertUe veinlet in the costal areole 

 is inconstant, and combined in the same fronds vrith sori on the 

 apices of converging veinlets. The terminal sorus on the free 

 veinlets, one of which occupies each costal areole, however, gene- 

 rally serves to distinguish the genus. 



§ Margimarvi. — Fronds monomorplious ; sori round. 



G. neriifolinm, Sooh. 

 G. verrucosum, J. Sm. 



Ex. ; G. albo-punctatmn, J. Sm. 

 G. argutum, J. Sm. 

 G. dasypleuron(Polypod.irze. J 

 G. fiirfaraceani (Polypodium, 



ScMteh.J 

 G. sulkauriciilatuni, Freil. 



6. fraxmifolinm (Polypodimn, Jacq.j 



G. lepidopteris (Acrostichum, L. and 



Msch.s Polypod. sepultum, S^«.) 



§ C;^prfnMj.— Fronds dimorphous j sori round. 



Ex. : G. cUiatum, J. Sm. I G. nununularium (Marginaria, Fresl.J 



G. pUosoUoidee,i7'.5in. 1 G. tectum, J. Sm. 



G. vaccinifoliuin, J. Sm. \ G. myrtiUifolium (Polypodium, Elfs.J 



§ S'ynamwwa.— Fronds monomorphous ; son elongated. 



Ex. : G. trilobum (Po^odium, Oav. ; Sjnaiamia, FresLJ 



106. CAMPYLOITEtrEITM, Fresl, Tent. Fterid. 189. 

 Ctetophlebium, M. Srown; J". Smith; Mabgiitaria, ZinJe ; PoiiTPoni 



Sp., Auct.; GBAUMlTZnlS sp., Auct. 



Sori non-indusiate, globose ; the receptacles medial, rarely 

 terminal, on the lower anterior free venules, or on the simple 

 excurrent free veinlets (of which two are usually included side 

 by side vrithin each of the sub-quadrate areoles). Veins pinnate 

 from a central costa, prominent, parallel; venules opposite anas- 

 tomosing transversely in a series of parallel angulate arcs, from 

 which proceed two or more excurrent veinlets; the veinlets 



