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 Gondilupes widely distributed in the 
Philippines. All tropical countries. 
3. D. luerssenii (Harr.) C. Chr. 
Rootstock stout, creeping or suberect, covered with brown scales, the 
stipes tufted, erect, glabrous, somewhat angled, pale, slender, 8 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 side 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.) O. Ktze. 
Stipes tufted, with linear, dark-brown scales near the base, otherwise 
glabrous, 10 to 30 cm long. Fronds 25 to 60 em long, oblong, simply 
pinnate, or the lower pinnae again pinnate, up to 15 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 
