55. ASPLENIUM. § 2. NEOTTOPTERIS. 283 



SO, pseudo-articulate at the base; fronds 15—30 cm. long, 3 — 4 cm. 

 broad, the apex acuminate to abruptly caudate, the edge crenate to very 

 irregularly sinuate and crenate, the base sometimes hastate or semihas- 

 tate but more especially in the younger plants, the costa sparingly scaly 

 beneath, the veins pellucid. — General aspect of a Phyllitis. — Sumatra. 



(6) il. aniboinenj§»e, waid. 



Fronds not rarely cuneate (but not decurrent) at the base. 



(6a) A. Drooksii, Copel., in Phihpp. Journ., VF, 137, tab. XX B. 



Near A. amboinense Willd. but the stipes aggregate, short (1 — 2 cm. 

 long), less scaly, the fronds to 10 cm. broad, provided beneath with ternate 

 hairs, i. e. the hairs placed in threes with a common base. 



Borneo. 



(la) A. papuaiiuni, Copel., in Philipp. Journ., VF, 79. 



Rhizome creeping, green, black-striped, sparingly and minutely scaly. 

 Stipes ± 1 cm. apart, + 3 cm. long, clothed towards the base with 

 minute, narrow scales. Fronds simple, +15 cm. long, + 2'/j cm. broad, 

 crenated, acuminated, blunt at the point. Texture herbaceous; surfaces 

 naked; under surface whitish; veins oblique, remote. Sori reaching from 

 the costa nearly to the edge; indusium broad, pale, 



New Ghiinea. 



(lb) A. scalarc, Rst., in Fed., Rep., XIII, 214. 



Stipes short, stramineous, to 2 cm. long, approximate, scaly, the 

 scales few, lanceolate, brown, sparingly toothed. Fronds simple, to 50 

 cm. long, + 4'/2 cm. broad, broadest in the upper half or at the middle, 

 narrowed from there towards the long-decurrent base, and upwards sud- 

 denly into a long-hnear acumen, prohferous below the apex, the edge 

 truncate-crenate, slightly recurved and bordered by a narrow whitish 

 stripe. Texture papyraceous; costa flattened on both sides, scaly; veins 

 rather horizontal, simple or forked, not reaching the margin. Sori oc- 

 cupying the lower '/2 of the veins ; indusium narrow, firm, whitish. — 

 Plants occurring in the Buitenzorg Herbarium differ from Rosenstock's 

 description in having the stipes somewhat longer, the costa prominent 

 towards the base, the veins deciduously minutely rotundato-scjuamulose. 



