114 POLYPODIACE^ OF THE PHILIPriXE ISLANDS. 



matted -with appressed tomentuiii; main veins distinct to the margin; sori 

 rather prominent, in close rows of 4 to G between the main veins. 



Mount Mariveles, Loher. 



India to Japan and ^lalaya. 



(5) N. sphaerostichus (Mett.). Rhizome wood}', wide-creeping, clothed 

 with ovate, acuminate, brown, crisped scales; stipe G to 10 cm. high, 

 firm, erect; fronds 10 to 15 cm. high, oblong-lanceolate, acuminate, base 

 narrowed abruptly, coriaceous, upper surface naked, lower sparsely tomen- 

 tose; main veins distinct to the margin; sori' in several series between 

 the transverse veinlets, confluent, covering the whole lower surface. 



Luzon, Cuming 127. 

 Celebes. 



(6) N. varius Kaulf. Rhizome wide-creeping, clothed with scales whose 

 long ferruginous or whitish tips are squarrose near the growing points, 

 appressed farther back, then deciduous leaving the elliptical peltate bases, 

 black in the center; stipes 2 to 5 cm. high, glabrescent; fronds usually 

 somewhat dimorphous, the fertile 15 to 25 cm. high, I cm. more or less 

 broad, attenuate to both ends but more abruptly to the base, coriaceous, 

 glabrous or nearly so on the upper surface, the lower very sparsely 

 pubescent, sterile fronds usually shorter and relatively broader; veins 

 invisible; sori distinct but contiguous, covering rather more than the 

 upper half of the frond. 



Luzon, Meyen, Chamisso, Cuming 17, G7, 88, 1.35, 240; Benguet, Barnes 

 Forestry Bureau 9G2, Tojrping 343; Mount Arayat, Merrill 3822; Corregi- 

 dor, Cuming 28G; Romblon, Copeland 301; Ciilion, Merrill 545; Samar, 

 Cumhig 323; Davao, Copeland 311, 938. 



Java to China and Mariannes. 



!<[. varius is construed here as including Is. elongatus BI., X. pertusus 

 Spreng., A. albicans BL, A. Blumeanus Kunze, and A. caudatus Kaulf. 



(7) N. adnascens (Sw.) Kaulf. Rhizome wide-creeping, clothed with 

 scales Avhose slender tips are deciduous; stipes 1 to 4 cm. high, erect, 

 puberulous; fronds dimorphous, the sterile rarely more than 6 cm. high, 

 10 to 15 mm. broad, broadest near the romided apex, contracted to the stipe, 

 the fertile usually 10 to 15 cm. high, 6 to 10 mm. broad, broadest below the 

 middle, both coriaceous, both surfaces smooth or sparsely pubescent; 

 veins invisible; sori distinct but contiguous, occupying more or less than 

 the upper half of the frond, with dense pubescence between them. 



Manila, Loher; Tayabas, Warhurg ; Mount Arayat, Merrill 3821; Capiz, 

 Panay, Copeland 102, 103; Davao, Copeland 554, 626, 656; a common epi- 

 phyte over beaches. 



Africa to Fiji. 



(8) N. nummulariaefolius (Sw. ) J. Sm. Rhizome very slender, wide- 

 creeping, clothed with spreading bright-ferruginous fibrillose scales; stipes 

 scaly, of the fertile frond erect, 5 to 15 mm. high, of the sterile much 

 shorter, horizontal: fronds dimorphous, the sterile 10 to 15 mm. long, 

 orbicular or elliptical, with or without a basal sinus, upper surface glabrous 

 or sparsely stellate, lower with a very dense white or ferruginous tomentum. 



