


64 THE BRITISH FERNS. 
forked, but sometimes three-forked or multifid. This lobing is 
generally unequal and irregular, and occurs mostly on the lower 
third of the frond, sometimes reaching two-thirds upwards, and 
occasionally, but very rarely, nearly to the apex. In its best state 
this is really handsome, the lobes being almost symmetrically bifid. 
It is not unfrequent. We have received specimens from—Kent: 
Blackheath; Tunbridge Wells, Mrs. Dewes ; Shettlefield, F. Brent. 
Surrey: St. Martha’s Hill, near Guildford. Sussex: Hastings. 
Devon: Lustleigh, Rev. J. M. Chanter. Yorkshire: Byland 
Abbey, C. Monkman; Hutton near Malton, C. Monkman (large 
sub-oblong sori). A rare and more fully developed form, becoming 
ramified in the rachis, has been called ramosum, but it is not 
constant. [Plate III A.—Folio ed. t. 1 F.] 
A serrated form, which may be distinguished as bifido-serratum, 
is found at Ruthin, T. Pritchard, and Malton, C. Monkman. 
3. interruptum (Woll.) This form has the lobes interrupted or 
irregular, some being often here and there entirely wanting or 
much abbreviated; others variously and irregularly bifid or mul- 
tifid, lobed or laciniated. This variety is rare: we have received 
it from—Surrey: Albury, S. F. Gray. Devonshire, Rev. J. M. 
Chanter. Yorkshire: Castle Howard, C. Monkman. <A fine analo- 
gous form has been found at Barnstaple, in Devonshire, by Mr. C. 
Jackson. y 
4. sinuatum (Willd.) This when well marked is a prettily varied 
form, and very distinct; the lobes are curiously irregular, sinuous 
or waved, sometimes divided at the apices, but throughout irregu- 
larly lobate serrate or serrulate on the margin, the lobules them- 
selves when large being often serrate. It is a rare form, and under 
culture for some years, has proved permanent. The plants have 
been found at—Tunbridge Wells, G. B. Wollaston. . Devonshire, 
Rev. J. M. Chanter. Hest Bank, near Lancaster, C. Monkman 
(margins sinuated but not serrulate). Stirling, Mrs. Macleod. The 
same variety received from Bingley, has been figured by Bolton, 
t. 2,fig. 5 b. [Plate III C.] 
An analogous form, chiefly remarkable for having a few coarse 
teeth near the ends of the lobes (apicidentatum) has been found near 
Stirling, Mrs. Macleod. 

