POLYPODIEiE POLYPODIUM. 129 



Davao, Warburg 14162, Copeland 1063; different from typical plants in 

 that tlie sori are not entirely immersed. 

 Java. 



(54) P. trifidum Don. Rhizome stout, creeping, clothed with large, 

 lanceolate, squarrose, ferruginous scales; stipe 8 to 20 cm. high, erect, 

 firm, polished; frond 10 to 15 cm. high, most frequently trifid, the segments 

 10 to 15 cm. long, one-tenth as broad, or the sterile rather broader, 

 acuminate, entire or repand, coriaceous, glabrous, green on both sides; 

 main veins conspicuous to the margin, veinlets obscure; sori in single 

 series, rather nearer the midrib than the margin, one between each two 

 main veins. 



Benguet, Loher, Elmer 5S15; Arayat, Merrill 3812; Mount Mariveles, 

 Loher, Copeland 219, Whitford 142. 

 Cej'lon to Japan. 

 This is very probably only an undeveloped state of P. palmatum. 



(55) P. glaucum Kimze. Rhizome creeping, stout, clothed with acic- 

 ular, stiff, purplish brown palete 1 cm. or more long; stipe 15 to 20 

 cm. high, erect, firm, polished; frond 20 to 30 cm. high, 15 to 20 cm. 

 broad, pinnatifid to within 5 mm. of the rachis into erecto-patent, acute, 

 entire segments 10 cm. long and 7 mm. broad, or the sterile rather broader, 

 coriaceous, glabrous, the under side with a blue bloom ; no main veins, 

 veinlets visible from the upper but not from the lower side ; sori superficial, 

 round, in single rows near the midribs. 



Luzon, Cuming; Mount Mariveles, Whitford 147, Copeland 1392; epi- 

 phytic on high ridgos. 



(56) P. affine Blumo. Rhizome woody, sealeless; stipe 30 to 45 cm. 

 high, firm, glossy; frond 00 to 120 cm. long, 30 cm. or more broad, cut 

 down nearly to the rachis below, within 1 cm. of it above, into erecto- 

 patent, slightly repand, very acuminate lobes, 15 to 25 cm. long, about 

 25 mm. broad, papyraceous, glabrous; no main veins, areolae large; sori 

 superficial, in 2 to 3 irregular rows. 



Luzon, Cuming 97; Sorsogon and Albay, Baranda. 

 Malaya. 



(57) P. Phymatodes L. Rhizome wide-creeping, stout, bearing sparse 

 deciduous fibrillosc scales, hcconiiiig glabrous except for very few ai)|)r('ssed 

 ovate black palese; stipes 10 to 20 cm. high, erect, firm, polished, brown; 

 frond exceedingly various, sometimes simple, lanceolate or oblong, acute 

 or obtuse, entire or nearly so, 10 to 20 cm. long; usually pinnatifid into 

 segments similar to the simple form, the sinuses reaching to about 1 cm. 

 from the rachis, usuallj' rounded, coriaceous, glabrous; main veins none 

 or very fine and not nearing the margin; sori large, round, immersed, in 

 single or double rows or scattered; epiphytic. 



Luzon, Cuming 27, 201 ; Mariveles and Manila, Loher; Taj'abas, Merrill 

 3353; Mindoro, Merrill 1780; Gimogoii River, Negros, Copeland 77; 

 Davao, Warburg 14113, Copeland 310, 657. 



Africa across Polynesia. 



2408(3 '•> 



