Veins uniform, from a costa, everywhere anastomosing and form- 

 ing unequal hexagonal, more or less elongated, areoles. 



Fronds cordate sagittate palmate or pinnate, herbaceous or 

 coriaceous, proliferous, the fertile taller. Rhizome short erect 

 or creeping. Sori continuously reticulated, often becoming con- 

 fluent. A small well-marked genus, as here limited, distinguish- 

 ed by the uniform and universal reticulation of the sori. 



Ex. : H. palmata, Lin. \ H. cordata, Soxb. 



H. pinnata, J. Sm. \ H. hederaefolia, J. Sm. 



(c) Veins pinnate, venules reticulated, without free veinlets. 



81. DICTYOCLINE, Moore, Gard. Chron. 1855, 854. 



Sori non-indusiate, narrow-linear, superficial on the anasto- 

 mosing venules ; the receptacles therefore reticulated. Veins pin- 

 nate from a central costa; venules transversely anastomosing, 

 forming two or three series of roundish-hexagonal areoles be- 

 tween the primary veins. 



Fronds coarse, herbaceous, pinnate with 3 4 pairs of pinna ; 

 the veins very hairy. Sori reticulated between the primary veins. 

 Rhizome short thick decumbent. This plant has the fructifica- 

 tion of Hemionitis, except that the sori, instead of being univer- 

 sally reticulated, only occur on the venules between the primary 

 veins, which latter are not soriferous. The aspect of the plant 

 approaches that of some of the larger species of Aspidium, 

 while the venation is nearly that of some kinds of Pcecilopteris. 

 It is the only hemionitidoid genus with pinnate venation. 



Ex. : D. Griffithii, M. (Assam, Griffith.) 



(d) Primary veins parallel-forked ; venules reticulated. 



82. SYNGRAMMA, J. Smith, Hook. Lond. Journ. Sot. 



iv. 168, t. 78. 



CALLOGKAJCM A, Fte ; GYMKOGIUMMATTS sp., Auct. ; DIPIAZII sp., Fretl 

 HI.; OXTGONII sp., Auct.; CAI.LIPTBBIDIS sp., J. Smith ; GBAMHIIIDIS 

 sp., Wallich. 



Sori non-indusiate superficial, narrow-linear, sub-parallel, un- 

 P2 



