166 Dr. J. D. Hookgn's Enumeration of the Plants 
14. P. pLerosoros, Hook. fil. ; fronde ovata bipinnata, pinnis linearibus elon . 
gatis acuminatis; pinnulis lineari-oblongis approximatis apicibus rotun- 
datis inferioribus grossé crenato-dentatis suprà pilis sparsis hirtis sub- 
tùs molliter pubescentibus, soris 10—14, rachibus costisque pubescentibus 
paleaceisque. 
Hab. James Island, Charles Darwin, Esq. 
Rachis paleacea pilisque brevibus albidis obsita, paleis elongatis brunneis. Pinnz 6 unc. 
longe, ad medium lineares deinde ad acumen gradatim attenuatz, 1 unc. late. Pin- 
nule sub-50, 1-2 unc. longe, 1 lata, sessiles, membranacez v. subcoriacez, superné 
confluentes, suprà pubescentes, subtüs pilosa, pilis sparsis elongatis, marginibus su- 
perné crenatæ. Sori plurimi, medio venulz 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. rALEACEUM, Hook. fil.; fronde latè ovata bi- vel tripinnatà, pinnis pri- 
mariis alternis remotis elongato-ovatis curvatis secundariis profundé 
pinnatifidis linearibus suprà pilis rufis densé vestitis subtüs glabriusculis ; 
segmentis oblongis obtusis infimis crenato-dentatis, soris 6—8 parvis, 
rachi densé subappresseéque paleacea. 
Hab. Charles and James Islands, Charles Darwin, Esq. 
Rachis gracilis, pallida, paleis elongatis subulatis fuscis operta, pubescens, tuberculis mini- 
mis asperula. Pinnz remote, 8-10 unc. longe, 3-4 late, ultra medium in acumen 
elongatum gradatim attenuate. Pinnulz 30—40, superiores decurrentes, inferiores 2-3 
unc. longe, 4-3 late, profundé pinnatifide, basi subpinnate, membranacez. Sori 
parvi, ut in P. pleiosoro siti. Venæ bis furcatze, ramo superiore apicem segmenti 
attingente. 
Only a portion of a frond was collected, which is about two feet long. 
16. Marernaria incana, Pres! (Polypodium, Sw.), var. frondibus plerumque 
pinnatis, pinnis inferioribus 2-3 furcatis. 
Hab. Charles Island, Charles Darwin, Esg. Albemarle Island, Macrae. 
Though a most abundant plant in all the tropical and warm parts of Ame- 
