238 37. ADIANTUM. § 1. EU-ADIANTXJM. 



oblong, cuneate at the base, rounded at the apex, with the upper and 

 outer edge pellucid-margined; fertile leaflets trapeziform (the higher 

 cuneate), obliquely truncate at the apex. Texture coriaceous; surfaces 

 naked; upper suiface glossy, lower more or less opaque and glaucous; 

 veinlets terminating in the sinuses between the ultimate serratures. Sori 

 transversely oblong, sublinear, 1 — 3 (commonly 2) on a leaflet, occupying 

 the upper and outer edge; sporangia springing from the veinlets only; 

 indusiura brown, coriaceous, finely rugulose when dry. 

 Neio Guinea. 



(18fl) A. Farle.veiise, Moore, in Gard. Chron., 1866, 780. 



Fronds large or middle-sized, triangular, pinnately compound. Leaflets 

 broadly cuneate-flabellate or tending toward quadrate-dimidiate in shape, 

 the largest ± 2 — 3 cm. long, 2 4 cm. broad, articulate to the nodose 

 apex of the petioles, the outer (or upper and outer) edge irregularly 

 and often deeply flabellately incised with oblong, emarginate or incised lobes, 

 the base broadly cuneate with entire, often decurved sides ; ultimate lobes 

 rounded or subtruncate at the apex. — Probably a garden variety of A. 

 tenerum Sw. 



Cultivated. 



(19b) A. opaciiiu, CopeL, 



A duplicate of this, received from Manila (Merrill No. 9618), has the 

 stipe and rachises provided with a few scattered, moderately long hairs 

 only, the leaflets varying from cuneate-flabellate to subdimidiate, with 

 the veins terminating in the serratures. 



(20) A. aetkio|iicuiii, £. 



Also in Malacca. 



(21) A. suliorbiculare, r. A. v. R. 



Leaflets bounded by a conspicuous, pellucid, marginal line. 



(21a) See No. 1%. 



(22a) /%. ciipreiiin, CopeL, in Leafl., IV, 1152. 

 Near A. opacum Cojxl. — Stipes 5 — 15 cm. long. Fronds 8 — 15 cm. 

 long, 6 — 15 cm. broad. Leaflets roundish, deciduous, bordered by a 



