POLirOIHE.E — POLYPODIL'M. 133 



2 cm. broad, obtuse, base subacute, entire, subcoriaceous, glabrous; fertile 

 frond about 20 cm. high, 1.5 to 2 cm. broad, subacute, acute at base, 

 subcrcnate; veins hidden, main veins not reaching margin; sori large, 

 round, immersed, in single rows nearer the margin than the costa. 



Tayabas, Merrill .33.55; Negros, Copeland 101. 



("1) P. lomarioides Kunze. Rhizome forming a thick, wide-spreading 

 crust, thickly clothed with small, peltate scales which are ferruginous 

 in the center, with a scarious border; stipe about 10 mm. high, erect; 

 frond 30 to 50 cm. high, 10 to 15 cm. broad, the sterile pinnatifid into 

 close, horizontal, oblong, entire, obtuse lobes 2 cm. broad, the fertile cut 

 nearly to the rachis throughout into more numerous lobes, hardly 1 cm. 

 broad, coriaceous, glabrous; veins hidden, irregular; sori round or ol)long, 

 completely immersed, in single rows near the midrib. 



Luzon, Cuming 242 (?). 



Malaya to Formosa. 



§ Drynariopsis. 



(72) P. heracleum Kunze. Rhizome very stout, clothed with long, 

 fibrillose, light-brown scales; fronds seriate, 100 to .350 cm. long, 60 to 

 100 cm.; broad, the base reduced to a broad rigid wing, 15 cm. broad, 

 weak in chlorophyll, the upper part cut down nearly to the rachis into 

 acute entire lobes 50 cm. long, 10 cm. broad, rigidly coriaceous, glabrous; 

 main veins distinct to the margin, with about eight series of large areolae 

 inclosing numerous small ones with free veinlets; sori small, numerous, 

 scattered, slightly immersed. 



Sor.sogon and Catanduanes, Bnrnudn ; Mindoro, Merrill 1800. 

 Java, Celebes. 



(73) P. meyenianum Schott. Rhizome very stout, densely beset with 

 long, linear, crisped, ferruginous scales; frond CO to 100 cm. high, the 

 basal part about 15 cm. broad, shallowly lobed, rigid, brown; the sterile 

 vegetative region 40 to 60 cm^ high, 20 to 30 cm. broad, pinnatifid almost 

 to the rachis into erecto-patent obtuse, entire lobes 2 to 3 cm. broad, 

 coriaceous, glabrous; main veins reaching the margin, between them four 

 or five series of rather regular major areolae, each including about eight 

 rectangular minor ones; apical fertile part about 30 cm. high, pinnate, 

 the pinnae sinuous, narrowly linear, about 20 cm. long, lobed to the 

 midrib into roundish segments, each covered by a single sorus. 



Luzon, Cuming 49; Mount Mariv(los, Merrill 3224, Whitford 221, Cope- 

 land 1386, on lofty ridges. 



(55) LECANOPTERIS Blumo. 



Rhizome creeping, inflated, cavernous and inhabited by ants; fronds on 

 conical cavernous outgrowths of the rhizome, pinnatifid or pinnate; veins 

 anastomosing with free included veinlets; sori on rcflexed marginal out- 

 growths of the fronds, facing upward. Epiphytic, usually in tlie tops of 

 loft}' trees. Closely related to some species of Polypodium. 



( 1 ) L. carnosa Blume. Rhizome and phyllophores forming a thick 

 close covering over the host, glabrous on the outside; stipes about 5 



