34 polypodiace.t: of the PHiLirpiNE islands. 



4. Frond pinnate. 



5. Margin of pinnae nearly entire. 



6. Apex of frond entire (10) A. persorifcrum 



6. Apex pinnatifid (H) A. pachyphyllum 



6. Apex trifid (12) A. [irande 



5. Pinnae pinnatifid. 



6. With free included veinlets.. (13) A. siifolium 

 6. Without free included vein- 

 lets (14) A. cicutai-ium 



3. Sori scattered. 



4. Frond simple, pinnatifid (15) A. vastum 



4. Frond pinnate. 



5. Terminal pinna deeply pinnatifid.. (16) A. melanocaulon 



5. Terminal pinna lobed at base (17) A. irriguum 



5. Terminal pinna merely sinuate.... (18) A. Menyanthidis 

 2. Indusium peltate, Tectaria. 



3. Lowest pinnae forked (19) A. repandum 



3. Lowest pinnte pinnate (20) A. calcareum 



1. Veinlets forming costal areolae, and a few others along the 

 main veins, Pleocnemia. 

 2. Caudex not subarborescent. 

 3. Sort round. 



4. Indusium peltate (21) A. mcmbranaceum 



4. Indusium reniform. 



5. Frond bi-tripinnate (22) A. giganteum 



5. Frond simple (23) A. heterophylhim 



3. Sorus oblong (24) A. ambiguum 



2. Caudex subarborescent (25) A. leuzeanum 



(1) A. Bryanti Copeland. Stipe 20 to 40 cm. high, bearing sparse 

 horizontal scales on the back, and on each side a nnifonn wing 1 cm., 

 more or less, broad, which is truncate near the base of the stipe; frond 

 30 to 50 cm. high, ovate, trifid with close lateral lobes or more often 

 quinquefld with the lower lobes remote and connected by a broad wing; 

 apical segment 20 to 30 cm. high, about 10 cm. broad, acuminate, entire 

 or subrepand, papyraceous, glabrous; lateral segments similar but smaller: 

 primary veins curved, almost reaching the margin, connected by conspic- 

 uous, arched cross-veinlets, the large, regular areolte thus formed divided 

 into small, irregular ones with free included veinlets; sori mostly in 

 rows along the main veins;, indusium none or fugacious. 



Terrestrial in forest near Gimogon River, Negros, Copeland 82. 



(2) A. Barberi (Hooker). Stipes tufted, 15 to .30 cm. high, slightly 

 scaly at the base; frond palmately 5-lobed, or more usually pinnate 

 with a large terminal segment and 1 to 4 pairs of pinnae, the upper ones 

 oblong-lanceolate, 10 to 15 cm. long, 2 to 3 cm. broad, nearly entire, 

 the lowest pair with a deep lanceolate lobe at the base on the lower side, 

 subcoriaceous, glabrous; areolae rather large and regular, with copious 

 free veinlets; sori copious, principally in two rows near the main veins. 



Majayjay, Loher. 

 Malaya. 



(3) A. macrodon (Reinw. ) Diels. Rhizome deciunbent; stipe 30 cm. 

 or more high, slightly scaly" below; frond 00 to 100 cm. high, half as 

 broad, the apex deeply pinnatifid, below this numerous lanceolate pinnae, 

 the lowest sometimes 30 cm. long, deltoid, cut do\\Ti to a narrow wing 



