





166 THE BRITISH FERNS. 
only, and others one or more fronds on a plant, affected; but the 
most marked have the whole plant affected more or less, and when 
perfect these are very handsome objects. The fronds are from six 
inches to a foot long, and from one to two inches broad ; the base 
truncate or cordate, the apex obtuse or acute or sublobate, and the 
margins exterior to the membrane-like line irregularly lobed or 
laciniate-toothed, sometimes undulated. The excurrent membrane 
forms a slightly sinuous line on each side of the rachis, reaching in 
the well-marked fronds from the base to the apex, and sometimes 
so distinctly-marked as to produce the appearance of a narrow frond 
of normalform superimposed on an undulated or laciniated variety. 
The plant first observed, was received from Epernay by Mr. S. F. 
Gray, but various English forms have since been obtained in— 
Yorkshire: Settle, A. Olapham. Cornwall: Penryn, G. Dawson. 
Devonshire: Ilfracombe, Rev. J. M. Chanter ; Torquay, and Dun- 
chideock, R. J. Gray. Somerset: Nettlecombe, C. Elworthy. 
Sussex: Reo. W. H. Hawker. Hampshire: Petersfield, G. B. 
Wollaston. Isle of Wight, R. Bloxam. Surrey, Dr. Allchin. Guern- 
sey, C. Jackson, J. James (very fine). A beautiful form with the 
fronds sublobate undulate and dentate at the margins, and having 
the membranous line strongly developed, and in many cases placed 
near the costa, as in the Epernay form above mentioned, has been 
raised from spores by Mr. Clapham. [Plate LXXXVII A.] 
57. supralineato-resectum (M.). The fronds of this elegant and 
permanent form are lanceolate, being tapered off in a curving line to 
the base, and attenuate at the apex; they are from six to eight 
inches long, and an inch or an inch and a half wide in the broadest 
part; the margin is crenately toothed. The fronds are distinctly 
supralineate, and fertile. It was found in Guernsey by Mr. James. 
58. supralineato-lobatum (M.). An elegant form growing about 
eight inches high, with the fronds subcordate at the base, and but 
slightly supralineate, erenate-lobate on the margin, and lobate or 
multifid at the apex. This has been found at Nettlecombe by Mr. 
Elworthy. A stil more beautiful form, having the supralineate 
character more strongly marked, especially in the upper or lobate 
portion, lias been found in the Isle of Wight by Mr. R. Bloxam. 
59. marginatum (M.). This remarkable form, though but recently 

