362 48. POLYPODIUM, §§§§§§§§§ PHYMATODES. 



but Einialler ; texture coriaceous ; both sides naked ; main veins distinct to the 

 edge, parallel, with copious fine areolae between them, with free included vein- 

 lets ; sori in a single row, nearer the midrib than the edge. — Hh. Sp. 5. p. 74. 



Hab. Japan to Formosa. 



• 350. P. (Phym.) pteropus, Blume ; rhizome wide-creeping, hypogsBous, the 

 emergent portions clothed with blackish lanceolate-subulate scales ; st. 4-6 in. 1., 

 sometimes scaly ; Jr. varying from oblong-lanceolate entire to ternate or pin- 

 natifid, with a large terminal lobe 4-9 in. 1., 1-2 in. br., and 2 smaller ones on 

 each side ; texture thin but firm ; colour dark-green ; both sides naked ; areolce 

 fine, copious, the main veins not distinct to the edge ; sori small, scattered. — 

 P. tridactylon, Wall. Hh. Sp. 5. p. 75. 



Hab. N. India to Ceylon, Malaccas, Philippines, Hong-Kong, Formosa. — Often grows 

 under water. 



t+ Dipteris, Reinw. Fronds flabellate, in two halves, which are deeply lobed 

 from the circumference in the direction of the base. Sp. 351-353. 



361. P. (Dipt.) Dipteris,- Blume; st. strong, 3-5 ft. 1.; fr. 1-3 ft. 1., and 

 much broader, the main lobes reaching three-quarters of the way down, the 

 edges sharply toothed ; texture subcoriaceous ; upper surface dark-green, lower 

 very glaucous ; main veins very prominent, dichotomously forked ; areolce 

 copious ; sori very minute, scattered irregularly, especially plentiful near the 

 main veins, confluent, not gummy. — P. Horsfieldii, R. Br. Sk. Sp. 5. p. 99. 

 P. conjugatum, Kaulf. (not Lam.). 



Hab. Malaccas and Polynesian Islands, as far east as Fiji. — This and the next are very 

 distinct in habit from the rest of the genus. 



352. P. (Dipt.) Wallichii, R. Br. ; st. strong, 2-3 ft. 1. ; fr. 1-3 ft. 1. and 

 much broader, the main lobes reaching three-quarters of the way down, the 

 edges not toothed, the ultimate lobes acuminate ; texture coriaceous ; upper 

 w/rface dark-green, lower dirty-white or subferruginous ; main veins very 

 prominent, dichotomously forked i areolce copious ; sori small, generally in distinct 

 rows, not confluent but distributed equally over the surface, often gummy. — 

 H&.Sp.S.p. 99. 



Hab. N. India, subtropical region. 



353. P. (Dipt.) bifurcatum. Baker; st. 1 ft. or more l.;/r. 1 ft. 1. and as broad, 

 the main lobes reaching down to the base, 3 or 4 times dichotomously forked, 

 the ultimate ones linear acuminate, entire ; texture coriaceous ; midrib only 

 prominent ; a/reohe principally in one large costal series with 1 sorus in each. — 

 P. Lobbianum, Hh. Sp. 5. p. 100, non Sp. 4. p. 226. 



Hab. Mount Ophir, Malayan Peninsula and Sarawak, Borneo, T. Lohh. — Avery dis- 

 tinct plant, differing from the preceding by its very deep narrow lobes and few solitary 

 Bori. 



*** Fronds deeply pinnatifid. Sp. 354-383. 

 t Fronds uniform, or the barren ones not drynarioid. Sp. 354-372. 



354. P. (Phym.) leucosporum, Klotzsch ; rhizome woofly, wide- creeping, the 

 scales lanceolate, black in the centre, with a scariose border ; st. 2-8 in. 1., firm, 

 erect, furfuraceous ; fr. 4-8 in. 1., 2-3 in. br., the upper part bluntly sinuated, 

 the lower cut more than halfway down into blunt lobes ^-| in. br. ; texture 

 coriaceous ; upper surface slightly, lower densely coated with minute furfu- 

 raceous Scales ; veins hidden ; sori large, prominent, uniserial. — Hh. Sp. 5. p. 76. 



Hab. Columbia. — Habit and scales of Lepicystis and P. lanceolaium. 



