48 A FLORA OF MANILA 



midrib. Sori indusiate, in two rows one on each lobe about half-way between 

 the mid-nerve and margin. 



In dry thickets, Masambong to Guadalupe; widely distributed in. the 

 Philippines. All tropical countries. 



3. D. luerssenii (Harr.) C. Chr. 



Rootstock stout, creeping o^r suberect, covered with brown scales, the 

 stipes tufted, erect, glabrous, somewhat angled, pale, slander, S to 40 cm 

 long. Fronds lanceolate to oblong-lanceolate, simply pinnate, 20 to 50 cm 

 long, 6 to 20 cm wide, acuminate, the basal pinnae slightly shortened; 

 pinnae distant, 10 to 20 on each side, lanceolate, acuminate, 8 to 20 mm 

 wide, cut nearly to the rachis into numerous, linear-spatulate to linear- 

 oblong, acute lobes, the sinuses as broad or nearly as broad as the lobes, 

 the lower surface slightly pubescent or nearly glabrous. Sori' 3 to 5 on 

 each si(|e of the midrib of each lobe, small, the indusium subpersistent, 

 glabrous. 



San Juan del Monte, occasional; widely distributed in the Philippines. 

 Endemic. 



4. D. dissecta (Forst.) 0. Ktze. 



Stipes tufted, with linear, dark-brown scales near the base, otherwise 

 glabrous, 10 to 30 cm long. Fronds 25 io 60 cm long, oblong, simply 

 pinnate, or the lower pinnae again pinnate, ^p to 1.5- cm long, acuminate, 

 pinnatifid, the lobes oblong, obtuse, entire or crenate, or the basal ones 

 pinnately lobed, thin, glabrous, the veinlets free. Sori numerous, about 

 1 mm in diameter, submarginal. 



In thickets, about old wells, ravines, etc., Pasay and Masambong; widely 

 distributed in the Philippines. Madagascar through tropical Asia and 

 Malaya to Polynesia. 



5. D. setigera (Blume) O. Ktze. 



.Rootstock stout, erect or suberect, the stipes tufted, 25 to 70 cm long, 

 the base with numerous, pale, linear-lanceolate, spreading scales, the upper 

 part usually glabrous or nearly so. Fronds ample, ovate to deltoid-lanceo- 

 late, 30 to 100 cm long, tripinnatifid, the lower pinnae longest, 15 to 30 cm 

 long, 5 to 11 cm wide, oblong to lanceolate, the rachis very narrowly winged; 

 pinnules close, lanceolate to linear-lanceolate, acuminate, 5 to 15 mm wide, 

 cut nearly to the rachis into numerous, close, oblong,, toothed lobes, the 

 lower surface, and sometimes ' also the upper one with few to many, weak, 

 spreading, white hairs. Sori minute, numerous, 2 to 4 on each side of the 

 midvein on each lobe of the pinnules, the indusium falling very early. 



In thickets, Diliman, also occasionally cultivated in Singalong, etc.; 

 widely distributed in the Philippines. India to japan, southward to 

 Australia and Polynesia. 



2. NEPHROLEPIS Schott 



Simply pinnate, terrestrial or epiphytic, often much elongated ferns, 

 from erect, creeping, or climbing rootstocks, often stoloniferous, the stipes 

 not jointed to the root-stocks, the pinnae jointed to the rachis. Sori round 

 or reniform, prominent, submarginal or medial in one row on each, side 

 of the midrib, terminal on the anterior veinlets or at the once forked 

 veins, or marginal and uniting, the apices of two or more veins. Indusium 

 reniform, attached by the sinus, the lobes often meeting or overlapping, the 

 indusium then becoming round and peltate, opening all around the edge 



