r(H.vi'()iiii:.i:— I'oLvi'oDn M. ] 27 



tliDsc of tlie Irrtilf fronds tlic liij^licr, straij^lit or crooked, straiiiiiu-ourt, 

 glabrous; fronds somowliat dimorphous, tlie sterile 3 to 10 cm. long, 

 lanceolate or ovate, obtuse or acute, entire, roundeil or cuneate at the 

 base, coriaceous, glabrous, the fertile frond usually longer and narrower; 

 niai!i veins conspicuous very nearly to the margin, areola; invisible; sf)ri 

 moderately large, in two rows between each two main veins, round, 

 superficial. Including J', niinntre lUume, this species varies exceedingly 

 in the size and shape of the fronds. 



Luzon, Ctiniiup •24.'>; lieiiguet, Lohcr, Topping 14!t; Arayat, Lohrr ; 

 Mount Mariveles, Barnes 34<). Whitfonl I2i'}, Vopelaud 11501. 



ilalaj'a and Polynesia. 



(44) P. membra naceum Don. Rhizome stout, clothed with ovate, 

 membranaceous scales ; stipe short, winged, erect, firm; frond 30 to 50 

 cm. high, about 8 cm. broad, narrowed gradually toward both ends, 

 repand or entire, very tliiti: iii^iiii veins distinct, with very copious fine 

 areola- with free veinicls; sori mostly in two rather irregular rows near 

 the main veins. 



Philippines, fide Baker, Ann. of Bot. 5:477; Baguio, Elmer 5873, Topping 

 226, 263. 



Ceylon to west China, 



(45) P. Zippelii Blunio. Kiiizome creeping, clothed with thin, lance- 

 olate, squarrose, brown scales; stipes short and stout; fronds about 30 

 cm. high, 4 to 5 cm. broad, acute, decurrent below, entire or nearly so, 

 submembranaceous, glabrous; venation very evident; sori mostlj* in rows 

 along the main vein.s. 



Philippines, Steere; Sorsogoii and Masbate, Baranda. 



Java. 



As originally described this species is very doubtfully distinct from the 

 preceding. 



(40 1 P. heterocarpum Blumo. Rhizome wide-creeping, clothed with 

 squarrose, linear, dull brown scales; stipes .30 cm. or more high, angular, 

 winged above; frond 30 cm. or more long, oblong-lanceolate, subacute, 

 attenuate below, repand, thin but firm, glabrous; main veins distinct, 

 areola* rather ample; sori more or less in rows parallel to the main veins, 

 irregular in shape. 



Benguet and Rizal, Loher ; Davao, Copeland 962, 965, 1251. 



India to Borneo. 



(47) P. hemionitideum Wall. Rhizome woody, hypogaeous; stipe about 

 10 cm. high, firm, erect; frond 20 to 50 cm. high, 10 cm. or less broad, 

 narrowed to both ends, entire, subcoriaceous, glabrous; veins very evident, 

 main ones not quite reaching the margin, areolae rather large; sori large, 

 irregularly arranged. 



Isabela, Luzon, Warburr/ 11603, 11621; Marivcles, Warburg 11527. 

 India and south China. 



(48) P. musaefolium Bluine. Rhizome woody, with ovate, dull brown 

 scales; stipe altoul 1 cm. high. \ery stout; frond over 1 m. high, 15 cm. 

 broad, oblanceolate, obtuse, nearly entire, broad -to the base, coriaceous. 



