-u 



330 57. ADIANTUM. § 1. EU-ADIANTUM. d. CUNEATAE. 



:(;. Sori rotindish-obteiiiform. Veins lerminaling in the angles be- 

 tween the ultimate serratures of the barren leaflets. 



(25) A. cuneatum, 

 :♦:.:+;. Sori transversally oblong. Veins terminating in the tops oj 

 the ultimate setratures of the barren leaflets. 



(26) A. capillus veneris. 



* (18) A. teueruiu, She., Hk. Bk., Syn. Fil., 124; A. nohile, Fisch., 

 horl. 



Stipes to 30 C.M. long, erect, naked, blackish, glossy. Fronds 25—90 

 c.M. long, "20—45 c.M. broad, deltoid, 3— 6-piimate. Leaflets cuneate or tending 

 toward rhomboidal-dimidiate in shape, the largest ^U — 2'/, c.M. long, '/a —^ 

 C.M. broad, articulate to the nodose apex of the petioles, the upper and outer 

 edge rounded or somewhat angular, broadly and often rather deeply lobed. Tex- 

 ture thin : rachis glossy and naked like the surfaces ; veins terminating in the 

 ultimate serratures. Sori placed in roundish or transversally oblong patches 

 in slightly rounded, shallow hollows, terminal on the lobes, the sporangia 

 springing from the veins only. — A species with several garden varieties. 



In cultivation. — Orig. loc: Bermuda, V^esl. India, Mexico, Juan-Fernandez. 



(19a) Al. neognineense, Moore, Ann. of Bot., Y, 



Stipes naked, castaneous, 15 — 20 c.M. long. Fronds deltoid, 3-pinnate, 



naked, above 30 c.M. long and broad; rachises very slender, naked, nearly 



black. Terminal leaflets cuneate, lateral trapezoidal, 1 — 1 '/j c.M. long, cuneate. 



Sori orbicular, 3 — 4 to a leaflet, placed in deep sinuses. — Intermediate 



between A. tenerum, Sw. and A. aethiopicum, L. 

 New Guinea. 



(196) A. opacum, Copeh, Philipp. Journ., I, Suppl., 255, tab. III. 



Rhizome short, clothed with narrow, castaneous scales. Stipes approxi- 



g mate, slender, + 20 c.M. long, the base furnished with long, scattered, deci- 



g duous hairs, otherwise pubescent like the lower part of the rachis. Fronds 



S 16 — 20 c.M. long, ovate, 3-pinnate. Leaflets deciduous ( ? articulate, the stalks 



^ persistent), often dimidiate, ± 8 m.M. broad, 1 — 174 c.M. long, the margii 



j£ narrowly cartilagineous, the upper and outer edge rounded, slightly lobed witli 



2 — 4 shallow lobes. Texture papyraceous, opaque; surfaces naked, pale 



