122 
FERNS : BRITISH AND FOREIGN. 
Tribe Y. — GRAMMXTIDEiE. 
Sori linear, sometimes only oval or oblong, obliqne or trars 
verse, marginal or costal, or more or less complete, reticulated 
naked. 
* Veins free. 
§ 1. Grammiteoe. Fronds linear, entire or rarely forlced, 
generally smooth. 
47. GRAMMITIS, Sw. in part. 
Vernation fasciculate, or uniserial and sarmentose, becoming 
crespitose. Fronds linear-lanceolate, entire, rarely subpinnatifid, 
plane, opaque, smooth or pilose, 6—10 inches high. Veins simple 
Genus 4/. — 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. Schh. Fil. t. 7. Polypodium 
marginellum, Sw. FI. Ind. Occ. — St. Helena. 
2. G. Australis, R. Br. Grammitis Billardieri, Willd.; Kunze, 
Anal. t. 9,f. 2. — New South Wales. 
48. XIFHOPTERIS, Kaulf. 
Vernation contiguous, sub-fasciculate ; sarmentum slender, 
sub-erect. Fronds 2-6 inches high, linear, dentate-serrate or 
