122 



FERNS I BRITISH AND FOREIGN. 



TRIBE V. GRAMMITIDE^E. 



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

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

 naked. 



* Veins free. 



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

 generally smooth. 



47. GKAMMITIS, 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 



1 



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. Sclilt. Fil t. 7. Polypodium 



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



2. G. Australia, R. Br. Grammitis Billardieri, Willd.; Kunze, 



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



48. XIPHOPTERIS, Kaulf. 



Vernation contiguous, sub-fasciculate ; sarmentum slender, 

 sub-erect. Fronds 2-6 inches high, linear, dentate-serrate or 



