282 55. ASPLENIUM. § 1. THAMNOPTEKIS. 



Rhizome short. Fronds cuneate-spathulate, + 40 — 50 cm. long, 

 10 — I2V2 cm. broad near the apes, rather suddenly rostrate-acuminate, 

 entire or not rarely irregularly, broadly and shallowly sinuate-undulate, 

 narrowed gradually into the acutely cuneate base or a short stipe. Texture 

 rather coriaceous; under surface provided with scattered, very minute, 

 deciduous, punctiform, fimbriate to fihform or capillary, brown scales; 

 costa rather flattened above and prominent beneath, flanked by rows of 

 long, filiform, deciduous, blackish scales; veins fine, ascending, + 1 — I'/i 

 mm. apart. Sori confined to the broadest portion of the frond, occupying 

 the lower V3 — % of the veins, not reaching the costa. — Differs from 

 A. nidus L. principally by its spathulate fronds. 



Neio Chtinea. 



(3c) A. nidus, i.,- — var. musifolium; A. ellijMcum, Copel.^ in 

 Leafl., Ill, 819; — var. phyllitidis; A. Phillitidis, Don., in Prod. Flor. 

 Nepal., 7. 



Forma typica: Fronds simple; often all the fork branches of the 

 veins soriferous. 



Forma monstruosa: Fronds irregularly dichotomous at the apex. 



Var. luusifoliuin: A form reported from Negros has the fronds 

 intermediate between this and A. cymbifolium Christ. 



Var. phyllilitlifS: Often only the anterior fork branch of the 

 veins soriferous. 



(3d) A., oblanceolatuni, Copel., in PhiUpp. Journ., IX'^, 229. 



Fronds subsessile, narrowly oblanceolate, + 40 — 60 cm. long, + 4 

 cm. broad, acute, entire, narrowed gradually towards the base. Texture 

 coriaceous; surfaces naked; costa prominent; veins erecto-patent. Sori 

 occupying the lower '/s of the veins. 



Sumatra, 



§ 2. NEOTTOPTERIS. 



(5) A. cpipliyticiiiu, Copel. 



Forma typica. — Also in Luzon. 



Forma phyUitoides: Stipes about I72— 6 cm. long, naked or nearly 



