ASriDIE.l'] — NErilUODIUM. 21 



4. Lower pinnoe abruptly reduced to auri- 

 cles (57) N. hispiduhim 



4. Lower pinnae not abruptly reduced to 

 auricles. 

 5. Stipe black fibrillose, later rough.. (58) N. fcrox 

 5. Stipe naked or villous. 



6. Frond about 40 cm. high, 



sori medial (59) A", parasiticum 



6. Frond about 1 m. high, sori 



close to veins (60) N. truncatum 



(1) N. hirtipes (Bl.) Hooker. Stipes tufted, 30 cm. or more high, 

 densely clothed with long, blackish, fibrillose scales; frond GO to 100 

 cm. high, 20 to 40 cm. broad; pinna? 10 to 20 cm. long, 2 to 3 cm. broad, 

 cleft about one-third of the way to the midrib into obtuse lobes, herbaceous, 

 glabrous, the lower ones not reduced; rachis fibrillose like the stipe; 

 veinlets 4 or 5 on each side; sori medial, indusium sometimes wanting. 



Benguet and Arayat, Loher. 

 India and Malaya. 



(2) N. distans (Don) Diels. Rhizome more or less creeping; stipes 

 30 to 45 cm. high, slender, glossy, stramineous or chestnut; frond 40 to 

 100 cm. high, 20 to 30 cm. or more broad; lowest pinna> rather the largest, 

 15 to 20 cm. long, 4 cm. broad, cut down nearly or quite to the rachis 

 into deeply pinnatifid pinnules 6 mm. broad, with obtuse or acute, toothed 

 or subentire lobes, herbaceous, slightly pubescent beneath; rachis naked; 

 veinlets slightly pinnate in the lower lobes, pellucid; sori scattered, copious, 

 exindusiatc. 



Benguet, Loher. 

 India to Celebes. 



(3) N. grammitoides (Christ, Bull. Herb. Boiss. 6:193). Rhizome 

 short creeping, scaly; stipes weak, 3 to 4 cm. high, stramineous, clothed, 

 like the entire plant, with short, stiflT, whitish hairs; frond 5 to 7 cm. 

 long, 15 to 20 mm. broad, caudate-attenuate, broadest at the base, bipin- 

 natifid; free pinnae about pairs, remote, alternate, sessile, triangular- 

 deltoid, acuminate, incised below to the costa into acute, triangular, 

 crenate lobes 4 mm. long; veins pinnate in the lobes; sori minute, round, 



3 or 4 on each side of the vein; indusium minute and pilose, or wanting. 

 Mount IMarivclcs, 1,400 m., Loher. 



(4) N. crassifolium Hooker. Stipes tufted, 30 cm. or more high, 

 glossy, slightly villous; frond 40 to GO cm. high, 20 to 30 cm. broad; 

 pinna? 10 to 15 cm. long, 2 to 4 cm. broad, their lobes obtuse, falcate, 



4 to G mm. broad, reaching from half to two-thirds down to the midril), 

 subcoriaceous, glossy but the midribs finely villous, lower pinna' distinctly 

 stalked; winlets 10 to 12 nii cacli side, witli tlic snri nearer the midrib 

 than the margin; indusium small, evanescent. 



Philippines, Loher; Xegros, Copeland 93. 

 Malaya. 



(5) N. Fauriei (Clirisl) var. elatius (Christ) probably belongs here. 

 It is a small fern, witli very narrow fronds, and consequently short pinnae, 



