.^ DII'LAZIUM. 73 



acute, obscurely serrate, glabrous, coriaceous, the lower ones short stalked; 

 veins 2 or 3 times forked; sori linear, not reaching the margin. 

 Palauan, in open woods; altitude, 500 m., Merrill 746. 



(3) D. cultratum Presl Epim. Bot., p. 84. Stipes tufted, 10 to 15 cm. 

 high, gray, naked, or the upper part and the rachis bearing a short hyaline 

 horizontal pubescence; frond 15 to 25 cm. high, half as broad, pinnate 

 with pinnatifid apex; pinnae 3 to 5 pairs, oblong-ovate, acute, subfalcate, 

 nearly entire, narrowed abruptly at base, and auricled, the lower stalked, 

 coriaceous, glabrous; veins twice forked; sori linear, reaching the edge but 

 not the midrib. 



Luzon, Cuming 199, Steere. 



(4) D. camarinum Baker. Stipe and rachis dull brown, naked; frond 

 oblong, simply pinnate, 30 to 45 cm. long, 15 to 25 cm. broad; pinnae 8 

 to 12 pairs, distant, stalked, linear-ligulate, acute, crenate, 10 to 15 cm. 

 long, 2 cm. .broad, rather reduced on lower side, rounded on both sides 

 at base, lowest not reduced, membranous, glabrous, dull green; veins 

 distinct, in close, little ascending pairs, posterior forked, anterior simple; 

 sori reaching from costa to edge, indusium persistent. 



South Camarines, Cuming. 



(5) D. pallidum Blume. Stipe 15 to 30 cm. high, firm, erect, naked; 

 frond 30 to 60 cm. long, 15 to 30 cm. broad, with numerous horizontal 

 pinnae on each side, the lower ones stalked, 4 cm. apart, 8 to 15 cm. 

 long, 2 cm. broad, linear-lanceolate, acuminate, base rounded especially 

 on the upper side, edge often sharply toothed, subcoriaceous ; veins once 

 or twice forked; sori in regular lines from the costa very nearly to the 

 edge. 



Davao, terrestrial in the forest, Copeland 956. 

 Malaya. 



The Davao fern is larger in every way than this description, copied 

 from Synopsis Filicum, states, but otherwise agrees perfectly. 



(6) D. sylvaticum Swartz Syn. Fil., p. 92. Caudex decumbent or 

 erect, stout, short, bearing crowded stout roots; stipes 10 to 30 cm. high, 

 firm, erect, scaly at the base only; frond 20 to 40 cm. high, half as broad, 

 pinnate with pinnatifid apex; pinnae numerous but not crowded, acute, 

 broadly but shallowly lobed and lobes entire or obscurely toothed, rather 

 abruptly narrowed at the base, mostly stalked, glabrous, subcoriaceous, 

 pale beneath ; veins pinnate-forked ; sori not quite reaching the margin. 



"Luzon," Haenke; Montalban, Loher; Mount Mariveles, Copeland 238, 

 Whitford 234; Davao, Copeland 672, 701. 



Pantropic. 



The plants with erect root stalks and those with decumbent ones are 

 undoubtably the same species. 



(7) D. grammitoides Presl Epim. Bot., p. 84. Rhizome wide-creeping 

 slender, chaffy; stipes 10 to 20 cm. high, gray-green, clothed throughout 

 with light, slender scales; frond 15 to 25 cm. high, about 7 cm. wide, 

 pinnate below, pinnatifid above; pinnae acute, sessile, subauriculate, gla- 

 brous, membranaceous, cut half way to the costa into entire or dentate 



