78 POLYPODIACE.E OF THE PHILIPPINE ISLANDS. 



5. Veins Inconspicuous. 



6. Sori equal, at wide angle 



to costa (21) A. anisodontum 



6. Sori unequal, veins leav- 

 ing costa at very acute 

 angle. 

 7. Pinnae only toothed.... (22) A. macrophyUum 

 7. Pinnae deeply lobed. 

 8. Stipe nearly 



smooth. 

 9. Sori al- 

 most 

 reaching 



edge .-.. (23) A. falcatum 

 9. Fal ling 

 well 

 short of 



edge .... (24) A. contigiium 

 8. Stipe fibrillose.. (25) A. crinicaide 

 8. Stipe chaffy, 



sori costal .... (26) A. caudatum 

 2. Fronds more than once pinnate. 

 3. Stipe smooth. 



4. Pinnules of lower pinnae few (27) A. cuncatum 



4. Pinnules of lower pinnae many. 



5. Pinnules inciso-serrate or lobed.. (28) A. affine 

 5. Pinnules cut to their rachis. 



6. Segments inciso-serrate .... (29) A. nitidum 



6. Segments deeply pinnatifid.. (30) A. laserpitiifoUum 



3. Stipe wooly (31) A. prae mors urn 



1. § Darea; ultimate segments linear, with solitary simple 

 veins. 



2. Rhizome short, stipe long _ (32) A. Belangeri 



2. Rhizome scandent, stipe short (33) A. scandens 



1. § Athyriuvi ; sori more or less curved across their veins, 

 sometimes horseshoe-shaped. 

 2. Indusia naked. 



3. Small fern, pinnules round-oval, lobes nar- 



^ \var. philippinense 



3. Large fern, pinnules elliptic-rhomboidal, 



lobes broad (35) A. nigripes 



2. Indusia ciliate (36) A. ivoodxcardioides 



S Neottiopteris. 



(1) A. (Thamnopteris) Nidus L. Frounds GO to 120 cm. long, 8 to 20 

 cm. broad, entire, acute or acuminate, tapering gradually into a short 

 stem, midrib rounded on the back; coriaceotis, glabrous; veins fine and 

 parallel, 1 mm. more or less apart, their ends connected; sori reaching 

 about half way toward the margin. 



Luzon, Haenke, Cuming 59; southern Luzon, Baranda; Montalban, Loher; 

 Bagnio, Topping 299; Paragua, Merrill 722; Todaya, Davao, 1.000 m. 

 Copeland 1261, 1296. 



Mauritius to Japan and New Caledonia. 



Asplenium PhyUitidis Don is a smaller form, usually bearing longer sori. 



Saraar, Cuming 319. 



