CHARACTERS OF TRIBES AND GENERA, 191 
differing only in the sori being linear, thüs agreeing as- 
also in habit with Leptogramma, differing only in the 
venation of one being freé and the other anastomose. On 
account of the sori being linear both the genera are in the 
* Species Filicum,” placed in Gymnogramme. 
Sp. S. aspidoides, Blume (Syneuron aspidioides, J. Sm. 
Hook. Ic. Pl., t. 950). 
96.— GoxroPrEnIS, Presl. (1836). 
Polypodium, sp., auct.; Hook., Sp. Fil. 
Vernation fasciculate, erect or decumbent, acaulose or 
subarboroid. Fronds pinnatifid or pinnate, rarely simple, 
l to 4 feet high. Primary veins costeform, pinnate ; 
venules opposite, the lower pair only or more, or the whole 
angularly anastomosing, producing from their junction an 
excurrent sterile veinlet, which is either free or anastomose 
in the angle next above it. Receptacles lateral (between 
the base and angular junction of the venules). Sori punc- 
 tiform, rarely oblong. Sporangia pilose in some. 
Type. Polypodium crenatum, Sw. 
Illust. Hook. and Bauer, Gen. Fil, t. 38; Hook. Fil. 
Exot, t. 84; Moore Ind. Fil, 57 A.; J. Sm. Ferns, 
Brit. and For., fig. 64; Hook. Syn. Fil., t. 5, fig. 48 E. 
Oss.-—This genus agrees in general habit with the 
indusiate genus Nephrodium, but the technical distinguishing. 
character is not always to be relied upon, the indusium 
of some species being often small and fugacious, conse- 
quently many specimens in herbaria have been referred to 
Goniopteris, but examination of living plants has proved 
the herbarium specimens to have been indusiate at some ` ` 
period during their growth. 
‘Twenty-three species are described in the “Species | : 
