840 66. STN6RAMMA. 



■§-4.4< EM I CRA MM Ai Vciua aiiagtomo a ing more or Icsa copiousl y . — Sui'i free 

 OP rotioulato. — Fronds aimplo or irrocfulagly inciBod) dimorphoiir i thn hnrnng . 

 onoD ofton forming- a i'athor denge f 08ot l i»> Main i W i ina ppooont. See the Apj 



§ 4. DICTYOGRAMME. Veins anastomosing more copiously. Sori free or 

 reticulate. 



§ 2. TOXOPTERIS. 



Fronds simple, entire, crenale or slightly toothed. 



b. Fronds oblimg, not more than A'X^ as long as broad. 



(1) S. valleculata. 

 6.6. Fro'ids lanceolate, ligulale or linear, more than 4 X lo^9 «* broad. 

 c. Fronds rounded at the apex. (2) S. obtusifolia. 



C.C. Fronds not decidedly rounded at the apex. 



d. Fronds narrow-linear, under 5 m.M. broad, the apex suddenly 

 acute. (3) S. Dayi. 



<l.<l. Fronds broader, at least the borren ones more than 5 m.M. 

 broad, the apex + acuminate. 



e. Barren fronds at best a little broader than the fertile 

 ones. (4) S. Lobbiana. 



e.e. Barren fronds distinctly broader than the fertile 

 ones. (5) S. borneensis. 



, Fronds simple, conspicuously toothed with + spreading, sharp or blunt- 

 oblong, cartilngineous teeth or spines. (6) S. cartilagidens. 



(1) S. valleenlata., C. Chr., Ind. Fil.; Gymnogramme valleculata, 

 Bk., Journ. of Bot., XXVI, 323. 



Rhizome woody, short-creeping, clothed with short, stiff, subulate, brown 

 scales. Stipes glossy, naked, castaneous, 15 — 25 c.M. long. Fronds oblong, 

 entire, tO— 13 c.M. long, o% — •'> c.M. broad at the middle, deltoid or rather 

 rounded at the base, the apex deltoid or obtuse, the margin revolute. Texture 

 rigid, thick ; costa castaneous ; surfaces naked ; veins immersed, obscure, anasto- 

 mosing near the margin. Sori immersed, erecto-patent, reaching nearly to the 

 edge. 

 Borneo. 



