CXLVII. FILICES. 743 
Secr. I. Euasplenium.—Sori linear, diverging fom p verde or fom the 
petinte le towards the margin the indusium opening from nner or upper edge 
Foi: entire, Veins and sori parallel and trans- 
erse. 
Fronds coriaceous, 1 to 6 ft. long, 3 to 8 in. broad, 
hee closely parallel, connected within the 
argin : l. A. nidus. 
Fiviids thinner, 1 to 1 ft. lon ng, i to 1} in. broad. 
Veins mostly 1 line apart, not coritisetad ai - thé 
2. A. simplicifrons. 
Fronds linear-lanceolate, broken into segments only a at 
the base, € ery oblique, parallel . 3. A, attenuatum 
cUm sim mply pin 
ins A forked, piiitiately diverging from an irregu- 
lar Fronds small, tufted, pear 2 to 3 
nes yim s 4. A. trichomanes. 
Mie more or less tripartite or flabellate at the base of 
vns e branch usually elongated and 
Fronds 5 wonk, diffuse. bm im obliquely obovate or 
shaped, 3o 6 lines broad 5. A. flabellifolium. 
Fronds diffus se, ub. hirsute. Panua ovate fan- 
ped or broadly — 6 to 9 lines 
ke A S iae o. 6. A. paleacewn. 
Fronds attaining 1 to 2 it. Pinnules lanceolate, 
acuminate, 14 to à in, p ng. . T. A. falcatum, 
Veins numerou parallel from the midrib. Pin- 
nules oblong or hebeoólate, coriaceous . . - . 8. A. obtusatum, 
nds bipinn Segments cuneate, e. 
Fronds 3 to 6 in. long. Primary pinne } to 1 in 
long, with small distinct Samos ias few, 
rather eu ` . 9. A. Hookerianum. 
Fronds - to | long. Primary pinnze lanc lanceolate, 
i o 2i x long with diskinds-9n or confluent toothed 
ents . - 10. A. furcatum. 
Ronde 5 p 3 it. lo ong, thrice or “four times pinnate s 
hio 
numerou and seco: sopred inne. Sori 
i PS , . . 11. A. laserpitii'oliwm. 
Szcr. II. Darea.—Sori oblong or linear on a vein parallel to the margin of the teeth 
or bii and opening towards the ma margin 
Sori large with Lun eg OES one to each tooth or 
* lobe of th of e pan pinn id = - 
ron 2 tt. aue mostly cyt a es : 
fekteclatar à to in. long . 12. A. bulbiferum. 
Fronds mostly pane: $ pinnulės i very ‘narrow, 3 to 
6 in. long . . 
13. A. flaccidum. 
car with narrow thin idusia, 
arranged along the Hie of the robes: ‘Fronds 
Sate im Jong, ae dicundo pinna Pu 
pinnate p a E EAT feo Dae 
Sze Athyrium.—-Sori small, often curved. mostly at the Jork of the veinlets 
Wee: i the midrib. 
Fronds large, membranous, twice or thrice pinnate . . 15. 4. wmbrosum, 
