CHARACTERS OF TRIBES AND GENERA. 
g 2.—Pectinatum Group. 
Fronds linear or broadly elliptical, erect, somewhat 
rigid, more or less deeply pinnatifid. 
- Ex. P. Schkuhrii, Radd. (v v.); P. laxifolium, Linn. ; 
P. pectinatum, Linn. (v v.); P. Paradisem, Lang et Fisch 
(v v.); P. pulehrum, Mart. et Gal. , | 
3.—Sororium Group. 
Fronds erect, pinnate, pinnae sessile or petiolate, smooth 
or pubescent. Veins three to four times forked. : 
Ex. P. Martensii, Mett. (vv.),; P. Hartwegianum, 
Hook.; P. puberulum, Schlecht. ; P. subpetiolatum, Hook, 
(v v.); P. sororium, H.B.K. (v v.); P. fraternum, Schlecht. 
(v v.) ? 
4.—Vulgare Group. s 
Fronds erect, generally thick, coriaceous, smooth, fari. - 
| nose or squamiferous, elliptical-lanceolate, pinnatifid, rarely - 
simple or deltoid, and bi-tripinnately laciniated. wee 
Ex. P. chrysolepis, Hook.; P. farinosum, Hook.; P. ` 
argyratum, Bory.; P. vulgare, Linn. ; P. macrocarpum, 
Pr.; P. plebejum, Schlecht. (v v.); P. madrense, J. Sm. : 
P. Skinneri, Hook.: P. fallax, Schlecht.; P. Frederich- - 
sthalianum, Kunze.; P. murorum, Hook.; P. onustum, 
Hook.; P. pellucidum, Kaulf. ; 
. Oss.—The fronds of the latter species and P. vulgare 
vary from pinnatifid to bi-pinnatifid, and even more divided ` ` 
and crested, of which P. vulgare presents many forms. Ce 
** Veins anastomosing in various ways. ` » z : = 
: Sect. 2.—GOoNIOPHUEBLE. an 
` 9,—Goxtormurnies (1828) (Presl in part, 1836). 
Polypodium, sect. Goniophlebium, Blume. ; Marginaria, | 
part Presl; Polypodium ; sp. auct., Hook. Sp. P, — 
