122 POLYPODIACI'LE OF THE PHILIPPINE ISLANDS. 



both ends, pinnate; pinnae close, spreading, decurrent, sharply toothed, 

 papyraceo-herbaceous, sparsely villose; veinlets simple; sori round, midway 

 between the costa and margin. 



Luzon, Cuming 113, 205. 



Malaya. 



(19) P. celebicum Blume. Rhizome very short, clothed with linear 

 brown scales; stipes 4 to 8 cm. high, firm, erect, beset with short, cinnamon- 

 colored hairs; frond 35 to 50 cm. high, 5 to 7 cm. broad, apex of mature 

 frond rather abruptly contracted; pinnae linear, about 3 mm. broad, sepa- 

 rated by their owti width, acute, entire, coriaceovis, glabrescent; rachis 

 short-hairy; veinlets simple, inconspicuous; sori half immersed, oblong, near 

 the margin and parallel to it. 



Mount Apo, 1,500 m., DeVore and Hoover 336, Copeland 1004, 1017. 

 Sumatra to Celebes. 



(20) P. obliquatum Blume. Rhizome short, clothed with large lance- 

 olate scales; stipe 2 to 4 cm. long, firm, spreading hirsute; frond 20 to 40 

 cm. long, about 6 cm. broad, pinnate; pinnae narrowed from broad bases to 

 acuminate apices, horizontal or subfalcate, entire, coriaceous, glabrous; 

 pinnules immersed, simple; sori immersed, tlie rim of the cavity almost 

 roofing over the young ones, oblong, oblique to the costa, reaching almost 

 from costa to margin. 



Mount Mariveles, Loher; Davao, Warburg 14173, Copeland 1018. 



India across Malaya. 



P. Schenkii Harrington, collected by Steere in Panay and by Loher in 

 Benguet, does not seem to be distinct. 



(12) P. decorum Brack. Rhizome short, creeping, densely scaly; stipes 

 to 3 cm. high, firm, clothed with exceedingly short hairs or glabrescent; 

 frond 10 to 25 cm. high, rather firm, broadly lanceolate, rather abruptly 

 contracted to the ends, pinnate; pinnae close, erecto-patent or horizontal, 

 obtuse or acute, coriaceous, glabrous; veinlets simple, invisible; sori 

 immersed and when young almost roofed over, oblique, falling short of 

 both costa and margin. 



Benguet, Topping 193; Arayat, Merrill; Mariveles, Copeland 214, Whit- 

 ford 244. 



Ceylon to Hawaii. 



A small form on mount Mariveles has usually a single sorus in or near 

 the apex of the pinna. 



(22) P. craterisorum Harrington, Journ. Linn. Soc. 16:31. Rhizome 

 erect, clothed with brown lanceolate scales; stipes clustered, 1 to 4 cm. 

 high, hirsute with brown hair, firm, erect; frond 20 to 30 cm. long, 4 to 

 6 cm. broad, oblong or oblong-oblanceolate, tapering above and below, 

 pinnate; pinnae numerous, linear, about 25 mm. long and 4 mm. broad, 

 obtuse, entire, broadened and more or less confluent at the base, passing 

 below into the narrow lobed wing of the stipe; rachis pubescent, lamina 

 glabrous, membranous; veinlets simple, falling short of the margin; sori 

 confined to the upper part of the frond, immersed, oval, 5 to 10 in a row 



