DA VALLIE.E DA VALLIA. 53 



Mount Apo, Mindanao, Copeland 1006, on tree trunks, in the mossy 

 forest, at an altitude of 1,800 m. 



(2) D. contigua Swartz. Fronds tufted, sessile or nearly so, 30 to 

 45 cm. long, about 3 cm. broad, linear-lanceolate, cut down nearly or 

 quite to the rachis into numerous linear-acuminate or bluntish, slightly- 

 toothed lobes; texture coriaceous; sori 1 to 8 to a lobe, placed in the 

 teeth on their upper part. 



Luzon, Cuming 216; Benguet, Elmer 6275; Davao, Copeland 1013, DeVore 

 and Hoover 335. 



Ceylon to Polynesia. 



(3) D. alata Bl. (D. Emersoni Hk. and Gr.) Rootstalk erect, short, 

 scaly; fronds tufted, sessile, 20 to 30 cm. high, 3 cm. wide at the widest 

 part, linear-lanceolate, cut more than half way down to the rachis into 

 numerous linear-oblong, or at the lower part triangular, lobes; texture 

 coriaceous, minor veins invisible; sori 1 to 8, placed round the edge of 

 the lobes. 



Mount Mariveles, Topping. 

 India to Borneo. 



(4) D. epiphylla Bl. Rhizome thick, fibrillose; stipe 10 to 50 cm. 

 long, erect, firm; frond variable in size, deltoid-lanceolate, tri-quinque- 

 pinnatifid; main rachis hardly at all winged; pinnules of the lowest 

 pinnae lanceolate, segments narrow, mucronate, sharply toothed ; texture 

 coriaceous; veins not immersed, one or two carried into each tooth; sori 

 small, submarginal, half-cupshaped, with the sharp mucro of the tooth 

 extending beyond them. 



Davao, Warburg 14138, Copeland. 



Java and Malay Peninsula. 



Not sufficiently distinct from D. elegans. 



(5) D. elegans Swartz. Rhizome stout, creeping, densely clothed with 

 wooly fibrous scales; stipe stout, 10 to 50 cm. high, brown; frond 30 to 

 60 cm. high, two-thirds as wide, deltoid tri- to quinquepinnatifid ; main 

 rachis slightly winged toward the apex; ultimate segments oblong-deltoid 

 or narrower, themselves usually toothed, inaequilateral ; texture coriaceous ; 

 venation prominent, irregular, with false veins free at both ends between 

 the true ones; sori several to a segment, marginal but exceeded by the 

 teeth; indusium half-cupshaped. 



Luzon, Cuming 77; Benguet, Elmer 6385; Gimogon River, Negros, 

 Copeland 69; Capiz, Panay, Copeland. 



Madagascar across Polynesia. 



Very variable in size and the degree of dissection of the frond. Epiphytic 

 and terrestrial. 



D. elata Sw. is a larger and less coriaceous form of this species, with 

 finer divisions. 



(6) D. solida Swartz. Rhizome stout, densely clothed with adpressed 

 scales or fibers; stipe 10 to 15 cm. high, strong, erect; frond 30 to 60 

 cm. long, deltoid, tripinnatifid; apex with a moderately broad undivided 

 center; segments ovate-rhomboidal, deeply toothed, narrower and sharper 



