22 POLYPODIACRS3 OF THE PHILIPPINE ISLANLS. 



and large sori; in the Philippine form the pinnae are incised at the base 

 to the rachis, or nearly. so. 



Mount Tonglon, 2,250 m., Loher. 



Japan. 



(6) N. attenuatum (J. Sm.) Baker. Stipes 30 cm. or more high, firm, 

 glossy, naked; frond about 100 cm. high, 00 cm. broad; pinnae 20 to 30 

 cm. long, 2 to 3 cm. broad, long-acuminate, incised three-fourths of the 

 way to the costa into spreading, entire, obtuse lobes 2 mm. broad, the 

 basal lobes much reduced, subcoriaceous, glandular beneath, lowest pinnae 

 slightly stalked; veinlets 12 to 16 on each side; sori in a close row, 

 indusiate. 



Samar, Owning 327 ; Rizal, Loher. 



(7). N. calcaratum (Bl.) Hooker. Rhizome short, erect; stipes densely 

 tufted, stramineous, 20 cm. high; frond 30 to 40 cm. high, 10 to 15 cm. 

 broad; pinnae spreading, 4 to 10 cm. long, 1 to 2 cm. broad, cut down 

 two-thirds or more of the way to the midrid into oblique, subfalcate, 

 linear-oblong, acute or obtuse lobes, the lowest acroscopic the longest, 

 herbaceous or subcoriaceous, dark green, more or less villous beneath; 

 veinlets 3 to 6 on each side; sori medial, indusium glabrous, persistent. 



Philippines. 



India and Malaya. 



(8) N. viscosum Baker. Stipe 15 cm. or more high, firm, erect, reddish 

 brown, slightly scaly, finely villous; frond 20 to 30 cm. high, about 10 

 cm. broad, oblong-lanceolate; pinnae close, 5 to 8 cm. long, 1 cm. broad, 

 cut down nearly to the midrib into close, spreading, linear-oblong lobes, 

 herbaceous, dark green, densely glandular beneath; veinlets 5 to 6 on a 

 side; sori medial, indusiate. 



Philippines, Lobb. 

 Malacca and Borneo. 



(9) N. immersum Hooker. Stipes tufted, 60 cm. or more high, stra- 

 mineous, scaly at base, naked above, or sparsely pubescent at top; frond 

 100 to 200 cm. high, 40 to 60 cm. broad; pinnae 20 to 30 cm. long, 20 

 to 35 mm. broad, almost horizontal, acuminate, cut down almost to the 

 midrib into close, spreading, subacute, linear lobes 2.5 mm. broad, papyraceo- 

 herbaceous, pubescent with stiff white hairs nearly 1 mm. long; veinlets 

 10 to 15 on each side; sori nearer the margin than the vein, immersed 

 so as to be prominent on the upper side; indusium peltate. 



Southern Luzon, Baranda; Davao, Copeland 695. Our plant is atypical 

 in the close lobes and more pubescent fronds. 

 Assam to New Caledonia. 



(10) N. ligulatum Hooker. Stipes gray, glossy, naked; frond about 

 100 cm. high, 30 to 50 cm. broad; pinnae 15 to 25 cm. long, 2 to 3 cm. 

 broad, cut down very nearly to the midrib into linear, obtuse, entire, 

 erecto-patent libes 2 mm. broad with more than their own space between 

 them, subcoriaceous, finely pubescent beneath, as is the rachis; veinlets 

 10 to 12 on a side; sori quite marginal, indusiate. 



Luzon, Cuming 94; Cagayan-Luzon, Warburg 12216; Cebu, Owning 343. 



