CHARACTERS OF TBIBES AND GEHEEA. 223 



Obs. — This genus is founded on a solitary species, wliich. 

 in habit is so like some species of Gtenopteris, that it might 

 be referi-ed to that genus, but the presence of indusia shows 

 it to belong to Aspidece. Its free veins, and generally orbi- 

 cular peltate indusium, led me to originally refer it to 

 PolysticJimn. In habit, however, it is totally at variance 

 with any species of that genus, as also with Lastrea ; I 

 therefore deem it best to characterise it as a distinct genus, 

 and view it with Camptodium as an aberrant species between 

 these two genera. 



Sp. A glandulosa, /. Sm. {Hooh and Grev. loc. cite). 



Native of Jamaica and Cuba. 



Sect. 4. — Aethkopteres. 



Fronds pinnate ; pinnas entire or subpinnatifid, articulate 

 with the rachis. 



Obs. — This section consists of a few special genera, 

 which do not well associate with any of the genera in the 

 preceding sections ; but the puin» being- articulate with 

 the rachis, and the presence of white chalky dots on the 

 upper surface, opposite the a^oex of each vein, seems to indi- 

 cate their relationship to one another, which will be 

 specially noticed under each genus. 



116. — Aetheopteris, J. Sm. (1854). 

 Polypodium, Nephrodium, and Neplirolepis, Hook., Sp. Fil. 

 Vernation uniserial ; sarmentum slender, stipes pseudo- 

 articulate ; the node of articulation basal or more or less 

 elevated. Fronds pinnate, 1 to 2 feet or more long, simple 

 or repeatedly dichotomously branched ; pinnas oblong lan- 

 ceolate, I an inch to 2 or 3 inches long, entire or pinna- 

 tifid, articulated with the rachis. Veins simple, or forked, 



