PHILIPPINE SPECIES OF DRYOPTERIS. 
201 
pinnis infimis basi attenuatis et deflexis, hand abbreviatis, pinnis obovatis 
sive rhombeo-elongatis 4.5 cm. longis, 3 cm. latis versus apicem latissimis 
ad mediam laminam sive ultra incisis lobis ovatis -rotundato-obtusis 3 
cm. latis ca. 8 utrinque, versus apicem pinnae repente elongatis, fronde 
fertile conformi, nervis ca. 8 utrinque aream unam costalem formantibus, 
soris magnis brunneis rotundis ultra 1 mm. latis, in lobis submarginalibus 
(lamina media soris destituta) brimneis exindusiatis. Faciebus tenuis- 
sime puberulis, textura herbacea, colore obscure viridi. 
Luzon, Province of Laguna, Mount Maquiling ( Loher ) April, 1906: Province 
of Rizal, Ampalit (Loher) April, 1906. 
No. 51 Cuming “ Polypodium, adfine Reinw.” in Herb. Bureau of Science, 
approaches Loher’s specimens cited above, except that the sori are not confined 
entirely to the lohes and are less marginal. 
In many respects similar to D. canescens var. lot alum,, but the aecrescence of 
the pinnse toward the apex and the increasing length of the lobes toward the 
tips of the pinnae is more accentuated. The sori are large, marginal, bordering 
the lobes in a single series and the plant has not the harshness and grayish color 
that distinguishes D. canescens, so that the present form can hardly be referred 
to the preceding as a subspecies. 
21. Dryopteris xiphioides n. sp. 
Rhizomate obliquo repente, stipitibus debilibus valde approximatis 
numerosis aequilongis 30 cm. longis rufostramineis, fronde pinnata 20 
cm. longa 11 cm. lata, late ovato-elongata, ad basin vix attenuata, pinna 
terminali 10 cm. longa basi aut libera aut pinnis lateralibus valde 
abbreviatis vieina sive connata, 13 mm. lata acuminata lanceolata crenata, 
pinnis lateralibus 4 aut 5 similibus sed haud ultra 7 cm. longis, nervis 3, 
rarius 4 omnibus junctis, soris paucis minutis exindusiatis, tota planta 
parce griseo pubescente, textura herbacea, colore griseo-viridi. 
Mindanao, Province of Zamboanga, San Ramon ( Copeland , s. n.) April, 1905. 
alt. 800 m. 
A species of the D. canescens group, remarkable by its very elongated falcate 
pinnae which are not reduced toward the base of the frond and but slightly lobed. 
22. Dryopteris Merrillii n. sp. 
Rhizomate erecto radicoso crasso, foliis fasciculatis numerosis, stipite 
rufostramineo flexuosa vix pennae corvinae crassitie basi squamulis mini- 
mis ruguloso aliter nudo (rachi facieque frondis parce puberulis) 18 ad 
20 cm. longo, fronde ovato-oblonga acuminata, 20 ad 29 cm. longa, 12 
cm. lata, apice elongato lobato, pinnata, pinnis confertis patentibus 
infimis interdum reductis et deflexis, egregie petiolulatis, falcato-lanceo- 
latis, acutis, 6 cm. longis, 12 mm. latis, basi verticaliter truncata egregie 
hastata, antice plus minus aucta, pinnis dentato-serratis dentibus decum- 
-bentibus, nervis goniopteridis, pinnatis inter costam marginemque areas 
4 ad 5 formantibus quaque area nervulum liberum porrectum includente. 
Fronde fertili longius stipitata, pinnis angustioribus magis remotis. 
Adsunt pinnae fertiles 6 mm. 5 mm. et 2 mm. latae! Soris confertis 
54744 4 
