166 Dr. J. D. Hooker's Enumeration of the Plants 



14. P. PLEiosoRos, Hook.JiL; fronde ovata bipinnata, pinnis linearibus elon 



gatis acuminatis ; pinnulis lineari-oblongis approximatis apicibus rotun- 

 datis inferiofibus gross^ crenato-dentatis supra pilis sparsis hirtis sub- 

 ttis molliter pubescentibus, soris 10-14, rachibus costisqiie pubescentibus 

 paleaceisque. 

 Hab. James Island, Charles Darwin, Esq. 



Rachis paleacea pilisque brevlbus albidis obsita, paleis elongatis brunneis. Pinnae 6 unc. 

 longae, ad medium lineares deinde ad acumen gradatim attenuatae, 1 unc. latae. Pin- 

 nulae sub-50, ^^-f unc. longae, \ latae, sessiles, membrauaceae v. subcoriaceae, superne 

 confluentes, supra pubescentes, subtiis piiosae, pilis sparsis elongatis, marginibus su- 

 perne crenatae. Sori plurimi, medio venulae inter costam marginemque siti. 



Only the upper portion, about half a foot long, of an apparently very large 

 frond exists in Mr. Darwin's collection, and it does not accord with any de- 

 scribed species nor with any in the Hookerian herbarium. The veins are 

 twice or thrice forked, and the sori are situated on the middle of the first 

 superior branch. 



15. P. PALEACEUM, Hook.Jil. ; froudc latfe ovatS. bi- vel tripinnata, pinnis pri- 



mariis alternis remotis elongato-ovatis curvatis secundariis profundi 

 pinnatifidis linearibus supra pilis rufis dens^ vestitis subtiis glabriusculis ; 

 segmentis oblongis obtusis infimis crenato-dentatis, soris 6-8 parvis, 

 rachi densfe subappress^que paleacea. 

 Hab, Charles and James Islands, Charles Darwin, Esq. 



Rachis gracilis, pallida, paleis elongatis subulatis fuscis operta, pubescens, tuberculis mini- 

 mis asperula. Pinnae remotae, 8-10 unc. longae, 3-4 latae, ultra medium in acumen 

 elongatum gradatim attenuatae. Pinnules 30-40, superiorcs decurrentes, inferiores 2-3 

 unc. longae, j-| latae, profunde pinnatifidae, basi subpinnatae, membrauaceae. Sori 

 parvi, ut in P. pleiosoro siti. Venae bis furcatae, ramo superiore apicem segmenti 

 attingente. 



Only a portion of a frond was collected, which is about two feet long. 



16. Marginaria incana, Presl (Polypodium, Sw.), var. frondibus plerunique 



pinnatis, pinnis inferioribus 2-3 furcatis. 

 Hab. Charles Island, Charles Darwin, Esq. Albemarle Island, Macrae. 



Though a most abundant plant in all the tropical and warm parts of Ame- 



