AN ENtJMKEATION OF Ct'LTtViTED FERNS. 1C5 



7. N bisserata, Sclwtt. Aspidium bisseratum, Sw. ; Schh. 



Fil. t. 33. Ncplirqdium' bisseratum, Fresl. — Philip- 

 pine Islands. 



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



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

 Plant, t. 395-6.— Malayan Archipelago. 



80. CYCLOPELTIS, J. Sm. 



Vernation fasciculate, decumbent. Fronds 

 pinnate, 1-3 feet high ; pinna? 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, J. Sm. En. Fil. llort. 

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

 Aspidium semicordatum,Siu.; (Plum. 

 Fil. t. 113). Lastrea semicordata, 

 Fresl. Hemicardium Nephrolepis, 

 Fee. Polystichum semicordatum, 

 Moore. — West Indies. 



Genus 80. —Pinna 

 of mature Ironfl, 

 under side. No. 1. 



§ 5. Didymochlcence. Fronds always bipiunale ; pinnw and 

 pinnules articulate with the rachis. Sori punctiform, oblong, 

 terminal. Indusium oblong hippocrepiform. 



81. DIDYMOCHL^JNA, Desv. 



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, 



