5B. ASPLENItM. § 2. NEOTTOPTERIS. 441 



a,a. Margin crenate, serrate or toothed. 



+. Rhizome erect, scaly. Fronds finely acuminate. 



(12) A. Mactierii. 

 +.+. Rhizome wide-creeping, naked. Fronds acute. 



(15) A. vittaeforme. 

 S.2. Stipes more or less scaly. 



3. Margin guile entire or obscurely repand. 



A. Surfaces naked. (14) A. scolopendrioides. 



M:.A. Surfaces scaly, at least on the costa beneath. 



S. Fronds narrow, l^j^ — J^'/j c.M. broad; surfaces naked, 

 costa scaly. (15) A. apoense. 



S.S. Fronds broader, 3—dO c.M. broad; under surface + 

 scaly, at least when young. 



e. Fronds 3—3% c.M. broad. (16) A. natunae. 



e.e. Fronds 3\—iO c.M. broad. 



7. Fronds not rounded, not abruptly acuminate at 



the apex. (17<*) A- squamulatum. 



S'.V. Fronds rounded and abruptly acuminate at the 



apex. (17^) A. Werneri. 



3.3. Margin crenate, at least towards the apex of the frond. 



+ Costa prominent on one side or on both sides. 



(18) A. glochidiatum. 

 ++ Costa depressed on both sides. (19) A. comosum. 



(g) A. epiphylicnin, Copel., Polypod. Philipp.,' 79. 



Rhizome scandent, clothed with few, small scales. Stipes distant, + 8 

 C.M. long, covered with minute, ferrugineous scales. Fronds simple, 20 — 30 

 c.M. long, + 4 c.M. broad, acuminate, crenate or serrate, the base obtuse 

 or subacute. Texture membranaceous; surfaces naked; costa firm, scaly; 

 veins conspicuous, often forited, nearly spreading. Sori linear, not reaching 

 the costa and the margin. — The fronds of the young plants are sometimes 

 2 — 5-pinnatisect or entire in the upper and divided in the lower part. 



Mindanao. 



* (6) A. amboineuse, vraid., Rac, Flor. Rtz., I, 210; A. /eyeense, 



