216 FERNS OF WESTERN SUMATRA. 



i 



P, nttmmularifoUum, Mett. Ayer Mancior. 



459. P. Diptetis, Blume. Mt. Singalan, 2500 metres. 



576. P. nvjrexcens, Blume. Ayer Mancior. 



581. P. albosquamatum, Blume. With the two last. 



577. P. a-ffine, Blume. With the two last. 



(355*). Polypodium (Phymatodes) quinquefidum, Baker, n. sp. 

 Rhizome woody, flexuose, ±-± in. diam., clothed with bright brown 

 linear scales. Stipes distant, naked, stiffly erect, pale brown, 

 5-10 in. long. Lamina deltoid, 6-8 in. long, 9-10 in. broad, 

 exactly similar to P. trifidum in texture, cut down nearly or quite 

 to the midrib into 5-7 lanceolate acuminate pinnae, 4-6 in. long, 



*-t " -- - 



Main veins 

 raised, erecto-patent, distinct and straight to the edge, £-| in. 

 apart, enclosing copious small hexagonal areolae. Sori large, 

 orbicular, superficial, one between each main vein, medial in 

 the lower part of the pinna), nearer the margin than the midrib in 

 the upper part. Mt. Singalan, 1700 metres. Very near the 

 Himalayan and Ceylonese P. trifidum, 1). Don., from which it 

 differs mainly in the position of the line of sori. 



468 (372*). Polypodium (Phymatodes) macrochasmum, Baker, 

 n. sp. Ehizome woody, epigaeous, wide-creeping, J in. diam., 

 densely clothed with small linear bright brown pale®. Stipes 

 distant, naked, pale brown, stiffly erect, 4-8 in. long. Lamina 

 deltoid, 8-10 in. long and broad, coriaceous, glabrous, cut down 

 nearly to the rachis into 9-17 lanceolate acuminate pinnfe, \-\ in. 

 broad, with a thickened obscurely crenulate margin. Main veins 

 raised, erecto-patent, distinct and straight to the edge, ±-£ in. 

 apart. Son one between each main vein, orbicular, deeply sunk 

 in a pit, forming a single row nearer the midrib than the 

 margin, and making the upper surface of the frond strongly 

 verrucose. Mt. Singalan, 1700 metres. Allied to P. lowpswmim 



and P. sculpturatum. 



585. Antrophyum I ati folium, Blume. Ayer Mancior. 

 A.jlantartineum, Kaulf. Mt. Singalan, 1700 metres. 



Too }* tana ehj, "J a ta, Sw. Mt. Singalan, 1700 metres. 

 423, 460. Gymn<Mjrammejav,mica, Blume. Mt. Singalan, 1700 

 metres. ° 



430. G. Totta, Schlecht. Mt. Singalan, 1700 metres. 



4o4. (r. mraluta, Hook. Mt. Singalan, 1700 metres. 



463. G. macruphyUa, Hook. Mt. Singalan, 1700 metres. 



oyb. G. quinata, Hook. Ayer Mancior. 



592. G. heteroctnpa, Blume. Ayer Mancior. 



Acrosttchum caUafotium, Blume. Mt. Singalan, 1700 metres. 



6B7. A. appendiculutum, Willd. Ayer Mancior. 



A. ituritum, Sw. 



, I. flageUtfarum, "Wall. Aver Mancior. 



414. A kcuspe, Hook. Mt. Singalan, 17(H) metres. 



41J. A. sulcatum, L. Ayer Mancior and Mt. Singalan. 



588. I. dnjnuriuUles, Hook. Ayer Mancior. 



465. nswiuKlajacanica, Blume. Ayer Mancior and Mt. Singalan, 



1700 metres. 



