ASPIDIE.E. Ixxxiii. 



Fronde robust, coriaceous, pinnate. Rhizome short, thick, 

 erect. In one division of this genus, the venules (except the 

 lowest) are all anastomosed. In the other, several of the lower 

 venules are free ; indeed soine specimens of C. nobile, belonging 

 to the latter group, are scarcely at all anastomosed, 



Cyrtomium. Venules generally anastomosed. 

 Ex. : C. falcatum, Preil. \ C. caryotideum, Presl. 



Amblia. Upper venules only anastomosed. 

 Ex. : C. nobile (Aspidinm.SchlechJ | C. juglandifolium (Amblia, Preil .) 



* * Veins connivently anastomosing* 



116. CYCLODIUM, Presl, Tent. Pterid. 85. 



AfflsociicpnTM, Presl; ASMDII sp., Auct. ; NJWPHKODII sp., J. Smith ; 

 POLYPODII sp., Auct. ; POIYSTICHI sp., Preil ; GOJUOPTEBIDIS sp., Fee. 



Sort indusiate, globose ; the receptacles medial on the trans- 

 versely anastomosed venules. Indusiwm orbicular, peltate. Veins 

 pinnate, from a central costa, straight or zigzag ; venules con- 

 nivently anastomosing in arcuate or angulate areoles, sometimes 

 producing from the angle an excurrent veinlet, which in the 

 sterile fronds is either free or unites with the next pair of venules. 



Fronds, thick, herbaceous, robust, pinnate; the fertile con- 

 tracted. Rhizome sub-erect. This genus is analogous to Ne- 

 pkirodium among the reniform A.spidiece ) and to Goniopteris 

 among the Polypodies ; but is somewhat peculiar in its robust 

 fronds, of which the fertile are contracted. It is also nearly 

 related to Cyrtomium, differing in having the transverse anasto- 

 mosed venules, instead of the excurrent usually free veinlets, 

 eoriferous. 



Ex. : C. confertum, Presl. I C. meniscloides, Preil. 



C. abbreviatum, Preil. \ C. Cumingianum(Anisocampium,PrJ 



117. POLYSTICHUM, Both, Tent. Fl. Germ. iii. 69 



(reduct) : Schott, Gen. Fl. (t. 9). 



HTPOPELTIS, Richard; ASPIBIUM, Siaartz, in part: Auct; EUMOHBA, 

 Raddi; HBMiGONiUM, J. Smith; PBLTOCHLJENA, Fee; CTCIOPELTIS, 

 J. Smith; HEMICAKDION, Fee ; TECTASI* sp., Cavanillei ; NEPHEODII 

 sp., Presl ; L ASIEE* sp., Auct. ; POLTPODH sp., Auct. 



Sori indusiate, globose j the receptacles medial or rarely termi- 



