CXXIIV. TABIB OB GENEEA. 



Hb. Itef 



(1)) Veins consisting only of a casta, amd the 

 intrrnna/rgi/nal receptacles parallel with it, 



23. Diclidopteris, Brackewridge, 1854. . [p. xxvi.] 



(c) Veins simple, ohligue, from a central casta. 



* Fronds entire, plane. 



24. Pleurogramma, (5?.l828.)P»'e«z,l836.[p.3aTJi.] 



Coehlidiam, Elfi. (pt.) 1824. 

 Micropteris, JHesv, 5?t.) 1837. 



** Fronds toothed helow, contracted, plicate, and 

 soriferous above. 



25. Xiphopteris, ^fi- 1824 [p. xito.] 



Mieropteris, De«u. (pt.) 1827; 



(d) V^/ns compoimdly anastomosing. 



* Fructification home on the contracted apices of 

 the fronds. 



26. Hymenolepis, W»- 1824. ... [p. xxviii.] 



Belvisa, Mirh. (pt.) 1803. I Hyalolepis, Kze. 1850. 

 MacroplethuSj Fresl, 1849. I 



** Fructification occupying distinct contracted fronds, 



27. Gymnopteris. Semh. 1800, (emend.) [p. siviii.] 



leptochiluB, Zlfs. 1824. 

 Dendroglossa, J'resl^ 1849. 



§ 5. TiBNITIDE^. 

 (a) Veins reduced to an oiscure casta. 



* Sori flexuose, subramose between casta and margin. 



28. Scoliosorus, M. 1856 [p. xxix.] 



** Sari oblong, lying in a furrow of the solid quadrate 

 fronds, on each side the casta, 



29. Holcosorus, M. 1856 [p. xxix.] 



fb) Veins uniform, reticulated, without free veinlefs. 



* Sori submarginal, or medial. 

 t Sori superficial. 



30. Tsenitis, wnid. .- Sw. 1806 [p. xxx.] 



Pteropsis, Desv. (pt.) 1827. I Digramma, JTae. 1848. 

 Chilogramma, M. (pt.) 1828. | 



+t Sori immersed, the interior ma/rgiM of the groove 

 thicJcened, and subinAusiform 



31. Schizolepton, Fee, i85i [p. xxx.] 



