THE COMMON HARTSTONGUE FERN 
4. obtusidentatum (ML). A very pretty dwarfish narrow-fr riety, having the margin shallowly, 
1 by muses, and the whole notched with 
sometimes deeply lobed, 4 's frequently separ 
nearly uniform blunt conspicuous teeth ; the apex is usually blunt, the midrib not reaching the end ; the 
" M. Chanter, 
sori are longish masses irregularly placed, Found near Ilfracombe, in 1855, by the Rev 
his variety is its rigid coriaceous texture and upright 
5. subeornutu ). The peculiarity of 
habit. It resembles denticulatum (5) in the small even toothing of the margin ; b fronds are шой 
incised or lobate ; they also terminate abruptly, and the rachis protrudes near the apex and forms a 
horn or hook on the under side. The fronds are sometimes furcate ; sori few, scattered. Мг, A, Тай of 
Edinburgh, first noticed it in the nursery of Mr. Sang, at Kirkaldy 
келуші 
6. cornutum (ML) is а very beautiful, as well as curious variety ; the fronds are coriaceous, 
thed ; they also usually terminate abruptly, the 
ming a long hook or horn, from which it takes its name, It fruits 
rachis projecting from th 
plentifully, and is a thoroughly constant variety, invariably reproduced from its spores. Tt was found. 
in Yorkshire by Mr. Thorne, and probably elsewhere, as it is not uncommon in collections. 
7. imperfectum (W.) is remarkable for the unfinished appearance of the margin of the frond, 
cut away аз far in as the sori, It was found in north Lancashire by 
which is entire, as tho 
Mr. Wollaston, in 18: 
and promises to be a constant form. ‘The fronds are linear, strap-shaped, 
metimes abrupt and sub-cornute 
somewhat irregular, truncate at the base, s the apex 
8. denticulatum (W). "This is of exotic origin, having been found near Geneva by the Rev 
ikely to be found in this country, or so certain to be raised from spores, that it 
W. H. Hawker, but is 
ded. The 
is here inclu ant is dwarf in habit, the frond ramose, dentieulate, and occasionally incised, 
metimos abrupt at the apex. Ав yet it has not fruited, but it js constant 
9. stenophyllum (ML). А very narrow linear form, cordate at the base, with broad shallow entire 
erenatures nearly to the point; sori normal beneath, with numerous small roundish sori near the 
margin above. Tt was found in Guernsey by Mr, J. James, of Vanvert 
10, erenato-lobatum (ML). An elegant form, normal in size and general outline, but the margin, 
especially in tho upper half, is strongly erenato-lobate, sometimes a little undulatod. It is very distinetly 
suprasoriferous, the upper sori often large and distinet like the lower. It appears to be a frequent form, 
and has been found in Devonshire by the Rev. J. М. Chanter; Saltwood, Kent, by Mr. F. Brent ; 
Guernsey by Mr. C. Jackson; and Dorsetshire by Mr. Wollaston, Tt is sometimes very slightly 
11. turgidum (W.) eo called from the thick or muddy appearance of the cellular tissuc—is sub- 
marginate. The fronds, which are from six to eight inches long, are normal in outline, irregularly erenate 
or sub-lobate, and fleshy ; the venation irregular and occasionally reticulate. Tt is quite distinct from all 
Т ound in Sussex, in 1854, by Mr. Wollaston. 
other varieties, and permanent under cultivation, Tt was 
al auriculate lobes at the base of the frond 
12, resectum (М) is so called from the absence of the usi 
development, 
sinuatum (13) and inceyuate (14), being irregular in width and 
in other respects it reson 
Te was found in Sussex, in 1854, by Mr. Wollaston, and is constant 
13. sinwatum (W) differs from the ordinary form in having the margin of the (which is 
te, the lobelike sinuosities be 
ar in development, entire or 
occasionally multifid) sinu 
te The venation is slightly confused in the contracted parts ; but the sori are normal. 
ге by Mx. Cla 
obscurely ere 
und in Sussex by Mr. Wollaston in 1854, and in Yorks! am; and is constant. 
14. inayuale (A). This handsome variety has the margin of the frond deeply incised, and distinctly 
and unequally lobed, sub-pinnatifid ; the apex generally multi ions copious and 
Dr. All 
irregular. It was found in Ireland 
in in 1853, and is a constant and a rare plant 
15. coriaceum (James). A dwarf form, very remarkable when fresh for its coriaccous texture, Tt is 
t, slightly marginate, sparingly and in 
i of the frond, F 
y surface, or actual und in Guernsey by Mr. J 
16. laciniatum (У). A handsome variety, in which irregular portions of the frond are contracted, 
