AN ENUMEEATION 01 CULTIVATED FEENS. 123 



pinnatifld below, sub-entire, and plicate or nearly plane above. 

 Veins simple, free, very short. Eecejptaclea costal or medial, 



GenuB 48.— Plant natural size, and portion of frond enlarged. No. I . 



elongated. Sori oblong, confluent, mostly contiguous to and 

 parallel with the midrib, confined to the upper part of the frond. 



1. X. serrulata, KomI/.; Fee, Gen. Fil. t. 10 B ; Hook. Ga/rd. 

 Ferns, t. 44 ; Lowe's New Ferns, t. 42 A. Grammitis 

 serrulata, Sw. ; Schk. Fil. t. 7 ; Soak. Exot. Fil. t. 78. 

 Polypodium serrulatum, Metten. — ^West Indies and 

 Tropica! America. 



§ 2. GywmogrcmvmeoB. Fronds pinmate or hi-tripinnatifid 

 or decompov/nd, smooth, or generally pilose, tomentose, or 

 farinose. 



49. LEPTOGRAMMA, J. 8m. 



Vernation fasciculate, erect or decumbent. Fronds bipinna- 

 tifid, 1-3 feet high. Veins of laciniss pinnate; venules free. 

 Beceptades medial, elongated. Sori oblong or linear, naked. 

 Sporangia in some species pilose. 



