5-88 



CVIII. POLTPODIACE^. 



\_Asplenium. 



having been supposed -useful in removing obstructions of the 

 viscera. 



1. A. septentriondle Hull {forlied Si)\ 



ments linear acutely laciniate-dentate. 

 stichum L, 



fronds bifid, 



B. B, t. 1017. 



seg. 

 Aero- 



Clefts of rocks^ In mountainous parts of the north, 

 shire ; 



Caernarvon- 

 near Llyn-y-Cwn, N. Wales. On Ingleborough and at 



Ambleside. Arthur's Seat, Edinburgh, plentiful; Stenton rock 

 near Dunkeld. 



2. A. alternifolium WiUf. {alternate-leaved S,) ; fronds pin- 

 nate, pinna} alternate lanceolate-cuneate toothed at the apex 

 lower ones trifid and toothed, involucre entire. E. B, t. 2258. 

 A. Germanicum Willd.. 



Rocks, very rare. Near Kelso ; Stenton rock, near Dunkeld • 

 S m. from Dunfermline.. Kyloe Crags, Northumberland; Borrow.' 

 dale. Caernarvonshire. 



3. A. BMa murdria L. {Wall-rue S.) ; fronds biplnnate, es- 

 pecialiy below, pinnules obovate-cuneate lobed or bluntly 

 toothed, involucre jagged'at the margin. E. B.t. 150. 



- . More compound than the 



three following species, but with the habit of the two precedin'^. , 



Wall 



( 



Wall 



pinnae roundish-oblong obtuse crenate truncate-cuneate at 



Rocks and walls, common. 



black). E. B. t. 576. 



5. A. viride Huds. 

 roundish-ovate obtusely 

 green). E. B. t. 2257. 



{green S.) ; fronds pinnate, 

 serrate cuneate at the base 



pinnse 

 (rachls 



the Highlands, 



Wal 



Frequent in 



6. A. marinum L. {Sea S,) ; fronds pinnate, pinn^ oblon^ 

 obtuse mcise-serrate, the superior base rounded and sub-auri- 

 culate the Inferior one truncate. E. B. t. 392. 



^ In clefts and caves of rocks on the sea-coast ; not unfrequent, espe- 

 cially in the north. 



7. A. lanceoldtum Huds. (green lanceolate S.) ; fronds lan- 

 ceolate and bipinnate, pinnules obovate attenuate at the base 

 deeply and sharply serrate, those of the lower pinna; some- 

 what lobed, principal rachis not winged, sori at leno-th con- 

 fluent. U. B. t. 240. ° 



^ Rocks, very rare. Jersey; Cornwall; Tunbrldge; on Adderbury 

 Church, Oxfordshire (no longer found there) ; Barmouth ; Staple- 

 ton, Bristol. Treniadoc and IVllheli, N. Wales. — Allied to the 

 toUowing, but distinguishable by the above-mentioned characters. 



5^' 



