VT. POLTPODIACEAE. § 9. GRAMMITIDEAE. 



2. Sori oa or close to the costa, often protected by a lateral, r< 

 outgrowth of leaf tissue. No. 68.j IMonograitii 



S.S. Sori marginal or submarginal. 



3. Sori + deeply immersed in mostly 2-Iipped, marginal or 



marginal grooves or with the margins roiled back over 1 



when young. Midrib present, veins free. No. 69. Wittai 



3.3. Sori not protected as in 3. Midrib wanting, veins a 



tomosing. (No. 64. Amtvophyum,, p. 



Fronds pinnate, rarely simple, but then not grass-like. Veins a 



tomosing. [Taenitideae). No. 70. Taenii 



§ 10. POLYPODIEAE. 



Sori punctiform, roundish or oblong, not more than + 3 X ^s 

 as broad, many on each side of the costae, sometimes solitary 

 terminal on the segments. 



6. At least the under surface covered with scattered or more or 

 densely crowded stellately branched hairs. No. 72. Cyelopbor 

 b.h. Fronds naked or scaly, not rarely hairy, but then the hairs sim 

 not stellate. 



c. Fronds dimorphous. Barren fronds sessile, oakleaf-like, ai 



wards brown and rigid, fertile ones stipitate, pinna 



or pinnate. No. 73. Drynar 



C.C. Fronds uniform or dimorphous, if dimorphous the barren frc 



not as. in c. 



d. Fronds deeply pinnatifid. Sori restricted to the higi 

 much contracted segments. 



e. Sori oblong or subquadrangular, closely placed in 1 1 

 on each side of and parallel to the costae. 



No. 74. Dryostachyu 

 e.e. Sori round, placed on distant, semiorbicular lo 

 1 to each lobe. 



No. 71. Polypodium {Meyeniam 



d.d. Fronds simple or divided. Sori dorsal, marginal or 



marginal outgrowths, but not on conspicuously contra( 



upper segments of divided fronds. No. 71. Polypodiu 



