(J. hibemica.J 
BRITISH JUNGERMANNIiE 
One or two Anthers are situated upon the nerve, and are entirely concealed by the perigonial 
scales. They are (f. 7) nearly spherical, of an olive-green or brownish color, placed on a 
very short, pellucid footstalk. 
Female Fructification arising from the upper side of the nerve of the frond, near the middle or 
upper extremity. 
Calyx double : the exterior one short, and cut nearly down to the base into lanceolate 
divisions or lacinise, which themselves are toothed or laciniated at their margins (f. 9) : 
the texture is altogether that of the frond, whilst the inner calyx is, on the contrary, more 
delicate, of a paler color, thrice the length of the outer, obovate, approaching to 
cylindrical, at the mouth cut down on one side, and slightly toothed. Such are the 
characters of the full-grown interior calyx, which are quite different from its young state: 
this, even after the perfection of the Germen, is shorter than the exterior one, cup- 
shaped, and slightly toothed or notched at the margin (f. 9). 
Germen ovate, dark green, tipped with a rather large, hollow style, and surrounded at its 
base by several linear-lanceolate, abortive pistilla (f. 9). 
Corolla white, between membranous and carnose, ovate, never exceeding half the length of 
the inner calyx. 
Peduncle an inch or more in length, white, succulent, flexuose, and cellular. 
Capsule oblongo-ovate, opening into four, or sometimes only three, valves, which are often 
united at their apices by the twisting together of the filaments. 
Seeds fulvous brown ; filaments of the same color, closely and spirally twisted in a double 
helix, and apparently attached to various parts of the inner valves of the capsule. 
Gemma none, that I have yet seen. 
I exceedingly lament, that the perfect fructification of this species was not discovered till after 
the annexed plate was finished by the engraver. By means of it, I am the more confirmed in the 
distinct nature of the species, though, even from the less complete specimens, there appeared to 
be sufficient characters to enable a botanist to distinguish it from J. Lyellii. It is altogether a 
larger and more branched plant; divided always in a dichotomous manner; and furnished with a 
nerve, not essentially differing in substance from the rest of the frond. I have noticed, under 
J. Lyellii, how the calyx and the corolla differ in the two species: an equally remarkable difference, 
and, as far as my observation has gone, an equally constant one, exists in the perigonial scales. In 
J. Lyellii they are rounded, deeply cut at their margins, thickly clothing the sides, and frequently 
the top of the nerve, and not closely appressed to it. In J. hibernica, on the contrary, they are 
distantly ranged, and point obliquely and alternately to the different sides of the nerve. The latter 
appears also to be an alpine plant, having hitherto been found only in very elevated situations. In 
the supplement of this work will be given figures of the perfect capsules. 
