AN ENUMERATION OF CULTIVATED FERNS. 165 



7. N bisserata, Scliott. Aspidium bisseratum, Sw. ; Sclik. 



Fil. t. 33. Nephrodium bisseratum, Presl. Philip- 

 pine Islands. 



8. N. davallioidos, Moore ; Lowe's Ferns, 7, t 23 ; Hook. Fil. 



J3xot. t. 60. Aspidium davallioides, Sw. ; Hook. Ic. 

 Plant, t. 395-6. Malayan Archipelago. 



80. CYCLOPELTIS, /. Sm. 



Vernation fasciculate, decumbent. Fronds 

 pinnate, 1-3 feet high ; pinnse entire, falcate, 

 lanceolate, 4-9 inches long, sessile, auriculated 

 at the base, articulated with the rachis. Veins 

 two or three times forked; venules free, the 

 lower interior and exterior ones sporangiferous 

 on or below their apices. Receptacles puncti- 

 form. Sori round, transverse, biserial. In- 

 dusium orbicular. 



1. C. semicordata, /. 8m. En. Fil. Hort. 

 Kew. (1846) ; Lowe's Ferns, 6, t. 3. 

 Aspidium semicordatum, Sw.; (Plum. 

 Fil. t. 113). Lastrea semicordata, 

 Presl. Hemicardium Nephrolepis, 

 Fee. Polystichum semicordatum, Genus so. Pinna 



-f -ITT i T j f mature trend, 



Moore. West Indies. underside. No.i. 



5. DidymochlcenoB. Fronds always bipinnate ; pinnae, and 

 pinnules articulate with the rachis. Sori punctiform, oblong, 

 terminal. Indusium oblong hippocrepiform. 



81. DIDYMOCHL^ENA, Dem. 



Vernation fasciculate and erect, subarboreous. Fronds bi- 

 pinnate, 2-6 feet long ; pinnules oblong-elliptical, oblique, base 

 truncate, subsessile, articulated with the rachis. Veins radiating, 



