POLYPODIACEAE 53 



toward their tips, the pinnules oblong, the upper surface glabrous, naked, 

 the lower surface densely covered with a white, waxy powder. Sori 

 linear, forked, eventually nearly covering the lower surface of the frond. 

 Cultivated for ornamental purposes, also spontaneous and abundant on 

 dry banks, cliffs, etc., Guadalupe to San Juan del Monte. A native of 

 tropical America and Africa, introduced and- now thoroughly naturalized 

 here. 



8. NOTHOLAENA R. Brown 



Terrestrial slender ferns from usually creeping rootstocks, the stipes 

 clustered, not jointed to the rootstock, the fronds rather small, pinnately 

 compound, glandular, hairy, or scaly, tfie veins free. Sori rounded to 

 oblong, terminal on the veins, often uniting into a continuous submarginal 

 line, naked or partly covered by the unaltered, usually recurved edge of 

 the frond. (Latin "false" and "cloak," from the imperfect indusium.) 



Species about 50 in the warmer parts of both hemispheres, 1 in the 

 Philippines. 



1. H. hirsuta (Poir.) Desv. {N. denaa J. Sm.). 



Rootstocks short, densely covered with narrow brown scales, the stipes 

 ratHer crowded, slender, 3 to 15 cm long, brown, shining, glabrous or 

 more or less' clothed with subulate, fibrillose scales. Fronds 6 to 20 cm 

 long, oblong, 1.5 to 5 cm wide, 3-pinnatifid at the base, the primary pinnae 

 distant, 4 to 7 below the pinnatifid apex, deltoid-oblong, the pinnules oblong, 

 about 1 cm long, the rachis and lower surfaces of the fronds more or 

 less densely fibrillose with brown hairs. Sori usually continuous along 

 the margin. 



On dry walls of Intramuros, and in dry thickets San Juan del Monte, 

 etc., of local occurrence in the Philippines. India through Malaya to 

 Australia and Polynesia. 



9. CHEILANTHES Swartz 



Usually slender, tufted, terrestrial ferns from creeping or ascending, 

 scaly rootstocks, the stipes dark-colored, not jointed to the rootstock, the 

 fronds pinnately divided, the veins free. Sori rounded to oblong, terminal 

 on the veins, at first Small and distinct,- afterward more or less confluent 

 in a submarginal line. Indusium consisting of the wholly or partly re- 

 curved modified margin of the frond. (Greek "lip" and "flower," allusion 

 to position of the sori.) 



Species over 100 in the warmer parts of both hemisphares, about 5 in 

 the Philippines. 



1. C. tenulfolia (Burm.) Sw. 



Stipes scattered or tufted, slender, brown, 8 to 20 cm long, shining, 

 naked, or the base slightly fibrillose. Fronds oblong-ovate 8 to 20 cm 

 long, 4 to 10 cm wide, 3-pinnatifid, the lower pinnae distant, opposite, about 

 2 cm wide, divided to the rachis in the lower part into oblong to linear, 

 entire or toothed lobes or segments, glabrous on both surfaces. Sori 

 rounded or subcontinuous, the indusium narrow, transversely oblong. 



In dry thickets, on cliffs, banks, etc., Caloocan to Pasay; widely distri- 

 buted in the Philippines. Tropical Asia to New Zealand, eastward to 

 Polynesia. 



