﻿330 37. ADIAINTUM. § 1. EU-ADIANTUM. d. CUNEATAE. 



i ■ • 



%. Sori roundtsh-ohreniform. Veins lerminafing in the angles be- 

 tween the ultimate serratures of the barren leaflets. 



(25) A. cuneatum. 

 ;+c.;l<. Sori transversally oblong. Veins terminating in the tops of 

 the ultimate serratures of the barren leaflets. 



(26) A. capillus veneris. 



* (18) A. teucriiiu, Stc., Hk. Bk., Syii. Fil., 124; A. nobile, Fisch., 

 hoi'L. 



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

 c.M. long, 20—45 c.M. broad, deltoid, ". — 4-pinnate. Leallets cuneaite or tending 

 toward rhomboidal-dimidiate in shape, the largest I'l^ — ^^j.^ c.M. long, 1 — 2 

 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 iu 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. 



In cultivation. — Orig. loc.: Bermuda, West. India, Mexico, Juan-Fernandez. 



(19a) A., neo^uineeiise, Moore, Ann. of Bot., V, 208. 



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

 naked, above 50 c.M. long and broad; rachises very slender, naked, nearly 

 black. Terminal leaflets cuneate, lateral trapezoidal, 1 — 1 % 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, Copel., Philipp. Journ., I, Suppl., 255, tab. III. 



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

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

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

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

 persistent), often dimidiate, ± 8 m.M. broad, 1 — 1 '/4 c.M. long, the margin 

 narrowly cartilagineous, the upper and outer edge rounded, slightly lobed with 

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



