














36 THE BRITISH FERNS. 
apparently linear, with the enlarged or prolonged anterior basal lobe 
quite evident. This narrowed appearance results from the incurving of 
the points of the lobes into which the margin is divided, whence the 
pinnules become convex. The lobes are toothed. The sori are de- 
veloped at the base of the lobes on the anterior sides of the venules, 
extending in two lines up the larger lobes; the lobes are, however, 
so narrow, that they are necessarily very near together from the first, 
and become confluent as soon as the spore-cases begin to spread. 
This form or variety is no doubt general, as it is known to occur in 
various places all over England, in North Wales, in both the Low- 
lands and Highlands of Scotland, and in the four provinces of Ire- 
land. It grows in exposed boggy places, and two or three states of it 
occur ; one of these, which Mr. D. Moore informs us is not uncommon 
in Ireland, has shorter but equally distinct pinnules, and the same 
erect habit. Aspidium irriguum is no. doubt a small state of the 
green form of this variety, and is perhaps permanently smaller. 
[Plate LVII A.—Folio ed. t. XXXI A.] 
The following habitats of the erect Lady Fern are known :— 
Peninsula.—Cornwall: Travenna. Devonshire : Barnstaple, Rev. 
F. Mules. 
Channel.—Sussex : Tunbridge Wells, Miss Bower. 
Thames.—Surrey : Virginia Water, T. M.; Shirley, W. Taylor; 
Mayford, T. M. 
Ouse.—Noifolk : Loddon, Rev. J. J. Smith. 
Severn.—W arwickshire : Arbury Park, T. Kirk. Worcestershire : 
Daylesford, H. Buckley. Gloucestershire : Nailsworth, Mrs. Camp- 
bell. Herefordshire: Penyard Park Wood, near Ross, W. H. 
Purchas. Shropshire : Shrewsbury. 
Mersey.-= Lancashire : Accrington. 
Humber.—Yorkshire : Mickley Barrows; Crayke, G. J. Chester. 
S. Wales.—Pembrokeshire : Castle Malgwyn, W. Hutchison. 
N. Wales. —Denbighshire: Ruthin, T. Pritchard. Carnarvon- 
shire : Aber. 
E. Lowlands.—Roxburghshire. 
E. Highlands.—Perthshire : Dunkeld, A. Tait; Callender, 7. M. ; 
near Dalnacardoch, Dr. Graham. 

