NovemsBer 6, 1907] Some New AND CRITICAL Ferns 235 
Elaphoglossum luzonicum Copel. n. sp. Rhizomate val- 
ido, 5 mm. erasso, dense investo; stipitibus confertis 2 mm. 
crassis deosum paullo incrassatis nec usquam  articulatis, 
paleis pallidis diversis, majoribus anguste ovatis acutis 7 
mm. longis vestitis, 16-30 em. altis, fertilibus plerumque 
quam sterilibus longioribus; fronde sterile 20-25 cm. alta, 
4-5.5 cm. lata obtusa, basi acuta, margine cartilaginea an- 
gusta acuta, squamulis submarginalibus deciduis subciliata, 
aliter max glabrescente et glaberrinia; venulis secoper visi- 
bilibus et in vetustate conspicuis inter costam et marginem 
liberis; fronde fertile minore, aliter vix diversa. 
Mt. Banajao, 1200 m. s. m., ad truncos muscosos. Elmer 
8190; Mt. Mariveles, 1300 m. s. m. Merrill 3250. 
A species of the E. conforme group, differing from S. 
cumingii (Tec.) Moore, as described, in being less coriaceous, 
having evident veins, and in being early and completely glab- 
rescent, except for the more persistent intramarginal squ- 
mulae. Our E. conforme is a small fern with more acute 
ironds and more or less articulate stipes. 
Dryopteris dubia Copel. n. sp. Rhizomate ut vidatur 
adscendente, ca 4 mm. crasso, basibusque stipitum paleis 
lanceolatis castareis 3 mm. longis vestitis, stipitibus confertis 
10-20 cm. altis, vinoso-castaneis sursum rhachidibusque pilis 
minutis paleisque parvis distantibus pubecentibus; fronde 
lanceolato-deltoideis, usque ad 50 cm. alta, 20 cm. lata, 
acuminata, quadripinnatifida; pinnis oppositis vel superioribus 
alternantibus, acuminatis, infimis deltoideis, 12 cm. longis, 
10 em. latis; pinnulis ultimis lanceolatis, fere ad costam 
in segmentis plerumque integris obtusis late oblanceolatis 
divisis, membranaceis, subglabris; venulis simplicibus; soris 
terminalibus; indusii forma variabilissima, saepius athyrioidea, 
interdum dryopteroides sinn lato vel subclauso, rarius as- 
plenioides. 
Mt. Banajao, 850 m. s. m. Elmer 8083. Judging by 
the sori this fern would be an Athyrium; but the frond's 
form and the color and texture of the indusium and an- 
nulus mark it as a relative of Dryopteris rhodolepis (Clarke) 
Q. Chr. 
