CHAEACTEES OF TRIBES AED GENEEA. 183 



others, form the section Ohilnpterls of the genus Grammilis 

 of Presl, but if he has had true specimens of G. linearis 

 under observation, he has not noticed the connecting- mar- 

 g-inal vein which is peculiar to this species, and which has 

 also been overlooked by the author of the "Species Pilicum ;" 

 and, as connecting marginal veins are admitted as of suffi- 

 cient value to constitute genera, such as Aconiopteris, Olfersia, 

 and Neottopteris, I therefore use this peculiarity in this 

 group of Ferns to characterise Lomuphlehia as a distinct 

 genus. 



Sp. L. linearis, Swartz, Sijn. I<'il. (Folypudium gramineum, 

 Sw., Fil. Flor. Ind. Occ. ; IIoolc, Sp. FiL, 4, p. 165). 



Native of Jamaica. 



Tribe 1-2.— CTENOPTERIDEiE (Plato 12). 



Fronds linear, repand sinuose, moniliform or pinnatifid, 

 rarely pinnate, or more compound, from an inch to 

 a foot or more in length. Feins free, sori punctiforni, 

 naked. 



Obs. — This tribo embraces a group of small, slender 

 Ferns, consisting of about 50 or 60 species, but in many 

 cases the difference is so slight that it becomes difficult to 

 determine the exact number of distinct species. In the 

 " Species Filicum " they are all placed under Polypodiuiu, 

 in the section Eiipolijpodiuin, which embraces all free- 

 veined species without regard to the vernation being 

 articulate or adherent. They present two forms of 

 vernation, the greater portion being fasciculate, forming 

 casspitose tufts, a few being sarmentose, with the fronds 

 more or less distant. 



