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thoro marginate or furnislied with the exourrent memhrano oharac-
toristio of tho marginate group, and henco they are called submar-
ginato. The fronds aro mostly of normal size, and vary from one to
two inches in breadth, the base being usually cordate but sometimes
narrowed and subtruneate, and the apex attenuate or lobato, sometimes
furcate, or multifid; the margins orenate-lobate, especially
towards the apex, tho lobes often crenately-toothed. These fronds are
freely soriferous beneath in tho usual way, and they arc also supra-
sorifcrous, in which respect, and in consequence of their crenate-
lobate margins, they approach crenato-lobatum (43). Other fronds
arc sometimes produced similar to the perfect ones on ono side of the
raohis, and on the other hero and there narrowed and dentate or
laoiniate ; others are truncate, suhmarginate, and obliquely cornute ;
and others again aro sometimes borne, which are abortive, having
nothing hut a short scaly stipes without any of the lamina developed.
The plants aro usually of elegant character, and not very uncommon,
having boon fonnd in—Devonshire : Ilfraoomhe, Rev. J. M. Chanter.
Sussex : Littlehampton, (?. R. Wollaston (lobato form) ; Hastings,
8. F. Cray. Isle of Wight, R. Bloxam. Dorsetshire : Glanville’s
AVootton, Q. B. Wollaston. Pembrokeshire: Castle Malgwyn, W.
Hutchison. Glamorganshire: Southerndown, T. H. Thomas (soalp-
turate). Yorkshire: Castle Howard, C. ; Eivaulx Abbey,
C. M .; Coxwold, C. M .; Alowthorpe Dale, C. M. (lobato) ; Doncaster,
S. Appleby; Settle, A . Clapham (irregular); Malham, A.
Stansfleld; Mulgrave Castle, H. & Nottingbamshiro : AVorksop,
S. Appleby. Durham: Sunderland, J. Fairbridge (lohate).
Guernsey, C. Jackson (lobate), J. James. Ireland, Dr. Allchin.
75. suhmarginato-deutatum (M.). A dwarf and interesting form
raised from spores by Alessrs. Stansfleld of Todmorden. The fronds
are variable, three to six inches long in the example before us, an
inch to an inch and a-half wide, cordate at the base, the margin
sinuous and crenately-toothed throughout; the longer frond is
narrowed but abrupt at the apex, the shorter one divides into two
branches about a couple of inches long, rounded at the ends, and
diverging right and left at a right angle with the lower portion. It
is said to he constant, and is curious and elegant.
76. submarginato-muttifldum (AI.). This is a very fine form, marginate
almost continuously, through the greater part of the frond,
but near tho margin and irregular. The fronds are upwards of a
foot long, about an inch or rather more in width, cordate at the base,
irregularly lobate and sinuous along tho margins, and multifid with a
tuft of numerous smaU dilated segments at tho apex ; in the fertile
portions the margin is also laciniate-toothed. It was found at Hackness
near Scarborough by Air. A. Clapham.
Besides being itself of ornamental character, this variety is
remarkable as having been the direct parent of the following
marvellously distinct forms raised by Air. Clapham from its spores :—
marginato-cristatum (64), mw-marginatum (66), ramo-proliferum
(67), proliferum (68), ramo-suhmarginatum (153), and ramo-marginatum
(154). These seedling plants were very carefully reared, and
Mr. Clapham informs us, that 58 of them, retained in his own coUoo-
tion, yielded the following results :—
S. proliferum 6 plants
S. vivo-marginatum >
A fair proportion of tliese
S. ramo-proliferum, tAvo f o rm s \
plants Avere proliférons; and
S. marginato-cristatuHiy t h r e e fo rm s 5
where fertile, also supvaso-
S. ramo-marginatum, tAVO f o n n s 5 ,,
riferous.
S. ramo-suhmarginatum 16 ,,
77. peraferum (WoU.). This variety is interesting chiefly on
account of a curious pouch or pocket produced at the blunt apex of
the frond. There are two plants having this peculiarity, a taller
and a dwarfer one ; the latter having fronds about six inches and
the former about a foot long. The fronds aro nearly or quite two
inches broad, cordate at the base, somewhat undulated, here and there
lobed or laoiniate-toothed and at these parts suhmarginate; the apex
is obtusely-rounded, somewhat lohate, the costa not reaching to the
margin, but becoming developed in a leafy or marginate manner into
a small pouch, this pouch hke the membrane in marginatum being
sometimes fertile. The costa is sometimes prolonged in the form of
a horn through the marginate apical membrane which forms tho
pouch. It was found in Ireland by Dr. AUchin, and though occasionally
bearing normal fronds, is a very fairly constant variety of
curious rather than elegant aspect.
78. rugosum (AUchin). A curious and distinct variety, with a
remarkable smooth appearance. The stipes is often long (3-9 inches).
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