THE COMMON HARTE-TONGUE FERN 
state ; the lower half equally contracted to less than half the width, deeply erenated, and marginate 
the extreme base being again broad 
velope the usual cordate lobes; both sides being 
uniformly affected throughout, and strongly marginate in the contracted parts. Found by Mr. J. James 
30. supralincatum (ML) differs rom the rest of the marginnte group in having the exeurrent membrane 
confined to the face or upper surface of the frond. There are several forms of this variety, some with 
but a small portion of each frond, others with one sido only, 
1 others with one or more fronds on a 
plant, affected. The most marked 
ym (which was obtained from Epernay) has the whole plant 
affected more or less, and when perfect is a very beautiful object. The general outline frond 
is strap-shaped, sometimes but not often multifid; about eight inches long; the margins beautifully 
but irregularly corrugate till they meet the exeurrent membrane, which forms a slightly sinuous line on 
each side of the rachis, reaching in a well-marked frond from the apex to the base; the whole thus 
having the appearance of a narrow fr 
nd of the normal form superimposed. 
the variety eripum. Tt 
жаз first brought into notice in this count: 
y Mr. S. F. Gray ; and analo 
ous forms have subsequently 
been found in Surrey by Dr. Allchin; in Yorkshire by Mx. A. Clap le of Wight by 
am ; in the T 
Mr. R. Bloxam ; in Devonshire 
Ha 
Rev. J. M. Chanter; in Guernsey by Mr. C. J 
ekson; and in 
те and Sussex by the Rev. W. H. Hawker and Mr. б. В. Wollaston, It is a rare variety. 
31. multiforme (М). This most remarkable and compound form, embraces within itself the роси 
arities of nearly every known form of variation, Its fronds are multifid, ramose, cornute, subulate, 
either simple or multifid, marginate, supralincar, corrugate, laciniate, or depauperate, and cannot be 
scribed than by a reference to the varieties indicated by the above epithets. Tt was found in 
y Dr. Allehin in 1849, and is a permanent form, and not now very uncommon. 
iricabim (ME). The type o 
nother class of variation, in which the upper surface is developed 
into ridges or raised points. In this the fronds are normal in outline, coriaceous, the and 
rgin he 
there lobed, or slightly sinuous, but the tissue is sunk between the veins p 
cducing evident furrows, and 
the v 
selves bear two or three elevated points, these points being 
attered rather plentifully 
over the whole frond. Tt was found in Guernsey, and sent to us by Mr, J. James of Vanvert 
33. jugosum (ML). Also found in Guernsey, and communicated by Mr, James and Mr. C. Jackson. 
‘Two or three modifications have been met with. Its peculiarity r 
s in a thickening of the veins 
which bear sori, resulting in the production of a series of ridges or leafy sorus-like exerescences on tho 
upper surface, and opposite to the sori on the lower surface, producing 
34. papillosum (A). This curious variety developes a series of distinct wart-like excrescenecs sido by 
side, above, on the veins, near their apices, and forming a border to the upper surface of the fronds, which 
latter in the specimens we have seen are small, and rather narrow, but of normal outline, It was sent 
from Guernsey by Mr. С. Jackson. 
rugosa (Allehin). This variety is marginato at the apex ; the leafy portion of the frond is very 
short in comparison with the stipes; it is undulate, erenate, and on the rachis almost echinate, and at 
x has a eur med by the splitting of the epidermis, 
pouch is fertile, as well as other portions of the frond, and has the rachis generally in its under 
cuticle. The stipes is very long and thinly clothed with scales, Tt was found in Ireland by Dr. Ае 
in 1853, and is a permanent and exceedingly rare form, 
36. nudicaule (Allchin), This resembles rugosum (35) in many respects, but the fronds are more 
variable in form and less rugoso : some being pocketed, some simple, and others multifid. But the g 
meo of scales—so unusual in Scolependrinm, This is so 
its vornation, that the eonvolutions of the fronds, which are to be developed for several years 
oby 
to come, aro visible on the crown. "This also was found by Dr. Allehin in Ireland, and is very rare 
1m (35) and nudicaule (36), in having a pouch-bearing apex. 
37. peraferum (УГ). This is akin to ruge 
Jar when in character, but they ar 
It has a scaly stipes, and the fronds are undulate and irr 
