54 POLYPODIACJLE OF THE PHILIPPINE ISLANDS. 



in fertile frond; veins uniform; texture coriaceous; sori nearly or quite 

 marginal ; involucre semicylindrical. 



Cagayan-Luzon, Warburg 12203; Mount Mariveles, Merrill 3715. 



Malaya and Polynesia. 



D. so I Ida var. caudata Cav. (as species) ; pinnules more divided with 

 narrower segments. 



Baguio, Topping 272, Elmer 6005. 



(7) D. bullata Wallich. Rhizome creeping, stout, densely clothed with 

 light-brown or whitish fibrillose scales; stipe about 10 cm. high, erect, 

 strong; frond 15 to 20 cm. long, almost as broad, deltoid, tri-quadripin- 

 natifid; pinnules of the lower pinnae lanceolate, 5 to 8 cm. long, with 

 deeply inciso-pinnatifid oblong-rhomboidal segments; texture coriaceous; 

 sori deeply half-goblet shaped, occupying the greater part of the tooth 

 in which they are placed, marginal, with usually a horn on the outside. 



Benguet, Loher, Elmer 6490 epiphytic on Pinus, fronds purplish. 

 India to Korea and Celebes. 



(8) D. decurrens Hooker. Rhizome stout, creeping, densely fibrillose; 

 stipe 10 to 15 cm. high, stout, erect; frond 30 to 60 cm. long, deltoid, 

 tripinnatifid; main rachis hardly at all winged at the apex; pinnules of 

 the lower pinnae lanceolate-acuminate, 10 cm. long, 2 to 3 cm. broad, cut 

 down throughout within a short distance of the rachis, with broadly- 

 toothed linear-oblong segments; texture subcoriaceous ; veins uniform; 

 sori falling short of the margin; involucre half-cupshaped. 



Philippines. 



Resembles D. divaricata in the shape and position of the sori, but the 

 frond less divided. 



(9) D. divaricata Bl. Rhizome creeping, stout, clothed with linear 

 ferruginous scales; stipe 15 to 30 cm. high, firm, erect; frond 60 to 90 

 cm. long, tripinnatifid; lower pinnae often 30 cm. long by 15 cm. broad; 

 segments deltoid, cut down to the rachis in the lower part, with linear- 

 oblong, sharply toothed lobes; texture coriaceous; veins uniform, not 

 conspicuous; sori half-cupshaped, placed obliquely as regards the central 

 veins in the teeth at some distance from the edge. 



Montalban, Loher; Davao, Warburg 14137. 

 India to Hongkong and Java. 



Best distinguished from D. solida and D. elegans by the position of the 

 sori. 



(10) D. wagneriana Copeland. Rhizome stout, scandent, densely 

 clothed with lanceolate, acuminate, appressed brown scales; stipe stout, 

 scaly near the base, glabrous above, as is the thick, slightly winged 

 rachis; frond 20 to 25 cm. high, 10 to 15 cm. broad, glabrous, coriaceous, 

 tripinnatifid at the base only, the fertile narrower than the sterile; 

 the lowest pinnae not larger than the succeeding, with a few distinct, 

 deeply toothed equal pinnules at the base of each, followed by broadly 

 linear, acutely toothed segments; sori usually a little deeper than broad, 

 only rarely reaching the margin. 



Todaya, Davao, 1,100 m., Copeland 1300; epiphytic in the crown of 

 high trees. 



