122 



FERNS : BRITISH AND FOREIGN. 



TRIBE V. GRAMMITIDEJE. 



Sori linear, sometimes only oval or oblong, oblique or trans- 

 verse, marginal or costal, or more or less complete, reticulated, 

 naked. 



* Veins free. 



1. Grammitece. Fronds linear, entire or rarely forked, 

 generally smooth. 



47. GRAMMITIS, Sw. in part. 



Vernation fasciculate, or uniserial and sarmentose, becoming 

 csespitose. Fronds linear-lanceolate, entire, rarely subpinnatifid, 

 plane, opaque, smooth or pilose, 6-10 inches high. Veins simple 



Genus 47. Portion of frond, natural size; ditto, enlarged. 



or forked, generally clavate, free ; the anterior venule fertile. 

 Receptacles elongated, medial-terminal. Sori ovate, oblong or 

 linear oblique, sometimes punctiform transverse-uniserial. 



1. G. marginella, Sw. Syn. Fil. Sclik. Fil. t. 7. Polypodium 



marginellum, Sw. Fl. Ind. Occ. St. Helena. 



2. G. Australis, E. Br. Grammitis Billardieri, Willd.; Kunze, 



Anal. t. 9,/. 2. New South Wales. 



48. XIPHOPTERIS, KaulJ. 



Vernation contiguous, sub-fasciculate ; sarmentum slender, 

 sub-erect. Fronds 26 inches high, linear, dentate -serrate or 



