THE GRE] 
N SPLEENWORT 
marked by an elevation on the upper surface. On the anterior side of the vein, opposite the furcation 
and extending below it when forked, and near to the midrib when the veins are simple, the sori are 
produced, 
Pructification more copious on the upper part of the frond, Sori linear oblique, contiguous to the 
midvein and soon becoming confluent, indusinte. Zudwsium narrow, erenated on the free margin. 
1 
Duration, Тһе caudex is perennial, The fronds are produced in spring, and remain fresh through 
Spore-c 
Spores angular, rough. 
nt thus being evergreen. 
the winter, the pl 
hough similar to A, Zriehomanes, this plant may be distinguished by its green rachis, by its more 
delicate herbaceous texture, by the absence of a slender raised border to the anterior face of the rachis, 
and by the more central situation of the sori, which are placed rather below than above the fork of the 
veins, It is always of a much paler colour. 
At home on the mountain sides of the north this delicate species does not bear so well as others the 
atmosphere of lowland cities, Hence, except in favourable localities not affected by smoke, the plant 
will not bear exposure. It is generally found necessary to cultivate it under 
lass, а cold frame 
occasionally ventilated, and with the atmosphere moderately moist, being most suitable for it, "he soil 
should be of a rocky nature, and no stagnant water should be suffered to remain about it. It may be 
increased by division, 
For pot culture in a moist shad 
icenhouse or frame, a soil composed of equal parts of loam, peat, 
sand, and sandstone rock broken up into lumps of one or two inches diameter, should be 
employed, and the pots must be w 
ell drained, because, as it is necessary that the roots should be kept. 
moist, provision must, be made for the free pass 
of the water applied, во that it may not stagnate. 
‘The proportion of rocky material, for which soft broken brick is a passable substitute, may be even 
increased with advant 
igo, the object b 
1g to provide for the draining of the moisture away from. 
the crowns, whilst it laves the absorbing fibres of the roots. 
In outdoo 
ockeries such species as the present would be benefited by the use of a kind of bell 
of 
шщ like а moist atmosphere about the plants during the arid 
glass provided with a vent at the top, which may either bo opened or closed at pleasure. The u 
such a glass would be to retain somethi 
summer months, and to shield the crowns from exe 
s of wet in winter. If the aperture, or apertures, 
were but of moderate size both these objects would be secured without ev 
closing the glass, and. 
thus risking another evil which follows mo 
ntain plants when brought under artificial culture away 
from their pure and airy habitats—that of өші 
cation from too close confinement 
‘The varieties of this Fern are not numerous. Mr. Wollaston has communicated the following notes :— 
1. multifidum (У) is biñidly or multifidly divided towards the apex of the frond, and is rather more 
lax than the us 
owth of the species. It is almost as frequent as tho common normal form, and is 
sub-permanent under cultivation, 
2. bipinnatum (Clowes). The pinnæ of thi 
variety are deeply incised, very much as in the incised 
variety of A. Trichomanes ; this however is fertile. Tt was found on Whitbarrow, in North Lancashire, 
by Mr. 1. Huddart, in 1853, and was in the possession of Mr. Clowes, of Windermere. 
3. acutum (ML). Mr. Newman notice 
variety found by the Into Mr. & Gibson, 
n which the pinnae 
were “ lanceolate and acute 
~ 
