si. ADIANTUM. S 1- EU-ADIANTUM. 2^1 



scaly, at length asperulous. Fronds + I272 — 20 cm. each way, with a 

 terminal branch T'/j — 15 cm. long and 2'/2 — 3 cm. broad and 1 or 

 more lateral branches. Lateral branches shorter, the lowest the largest, 

 forked or branched again at the base. Leaflets dimidiate, close, sub- 

 rhomboidal or the lowest subflabellate, the largest + 1 — I'/, cm. long 

 and '/a s-s broad or a little broader, the base broadly cuneate or rotundate- 

 cuneate, the upper edge slightly lobed, denticulate, the apex blunt or 

 rounded, denticulate. Texture coriaceo-chartaceous ; rachises dark-purple- 

 brown, hirsuto-tomentose above ; surfaces naked ; veins terminating in the 

 ultimate serratures. Sori transversely oblong or shortly linear, placed 

 in broad shallow hollows along the upper and sometimes also on the outer 

 edge; sporangia springing from the veins only. 

 Java. 



(15e?) A. Christii, Rst., in Fed., Rep., XII, 166. 



Stipes firm, 15 — 20 cm. or more long, naked and purple-black 

 hke the rachis, asperulous at the base. Fronds ovate or ovate-oblong, 

 + 40 cm. or more long by 2i cm. broad, acuminate, 3-pinnate at the 

 base. Pinnae + 6 on a side, petiolate, ascending; lower pinnae linear- 

 ovate, shortly acuminate, 2-pinnate. Leaflets horizontal or spreading, 

 dimidiate, subrhomboidal, straight or slightly recurved, somewhat narrowed 

 towards the apex, ± 16 mm. long by 4 mm. broad, the upper and outer 

 edge slightly lobed. Texture chartaceous; under surface subglaucous; 

 rachises rough-hairy above, the hairs fulvous. Sori reniform, 1 — 2 on the 

 upper and outer edge of the leaflets ; indusium reniform, coriaceous, black- 

 purple, pale-margined ; sporangia from the veins only. ; — Rhizome 



NeiD Guinea. 



(16fl.) A. hullaudiae, r. A. ». n., in Bull. Btz., 1912, VII, 1. 



Rhizome short-creeping, clothed with black-purple, setiform scales. 

 Stipes aggregate, + 30 — 40 cm. long, black-purplish, glossy, the lower 

 part deciduously subulato-paleaceous, at length scabrous. Fronds ovate, 

 + 20—25 cm. each way, branched, the rachises naked, purplish-black; 

 branches linear, ^ 2 — 3 below the terminal one, rather erecto-patent, + 

 12 7j — 17 V2 cm. long, + l'l.^—2 cm. broad, narrowed towards the apex, 

 the lowest forked on the lower side at the base with a single rather 

 short branchlet. Leaflets dimorphous, dimidiate, short-stalked, rather close, 

 oblique, the largest + ^j^ — 1 cm. long, 5 — 6 mm. broad; barren leaflets 



