fj. obtusifolia.) 
BRITISH JUNGERMANNm. 
may be seen to be obscurely crenate. The reticulation is small, formed by roundish 
cellules of nearly the same size throughout : the color of the leaves a pale green, 
becoming still paler after having been kept for some time in the Herbarium. 
Perigonial leaves very closely imbricated, and placed at the extremity of the plant, much 
inflated at the base; at their apices, both in the lobes and lobules, recurved. 
Perichcetial leaves (f. 6) larger than the rest, and more erect, a little waved at their 
margins; with their almost cylindrical base, they entirely envelop the lower part of 
the calyx. 
Male Fructification always, as far as my observation enables me to judge, upon distinct plants 
from those which produce the female. The anthers are situated in small clusters in the axillae 
of the perigonial leaves, and upon short white footstalks. They resemble, in every respect, 
those of J. albicans. 
Female Fructification constantly, in reality, terminal, though the shoots or innovations, before 
alluded to, as originating not unfrequently from the extremity of the stem, often take their 
rise immediately below a calyx, and thence make it seem lateral. 
Calyx (f. 5) ovate, or rather obovate, erect, plicate in its upper half; the mouth contracted, 
and cut into several small, sharp teeth. In color and texture the calyx resembles the 
leaves, except that, in a more advanced state, it is white and scariose at the orifice. 
Calyptra obovate, whitish, strongly reticulated, so transparent that the young capsule and 
its peduncle may very distinctly be seen within it (f. 7). Style short and tubular. 
Barren pistiUa seven or eight in number, linear, faintly striated both longitudinally 
and transversely. 
Peduncle two or three lines long, white, shining, succulent, cellulose. 
Capsule ovate, approaching to round, of a deep reddish-brown color : it divides into 
four equal, ovate, and obtuse valves, and discharges its numerous 
Seeds and spiral filaments (f. 8) of a fulvous color, the former spherical, the latter 
composed of a double helix. 
I cannot quote the Hallerian synonym, above alluded to, without entertaining considerable 
doubts as to the propriety of my doing so; since the description is of such a nature, that little 
can be collected from it to aid our conjectures, and the references given by the author all belong 
to quite a different plant. Haller, indeed, observes, that the leaves are “ pauli, m auriculata,” 
and further says of his species, “ad Jungermanniam Dill. 20. (J. albicans) proximb accedit, sed 
folus differt rotundioribus.” 
1 he entire margins of the leaf in J. obtusifolia (or, at most, their being only very slightly 
erenated in a few that are situated at the extreme part of the stem), the want of the pellucid 
cential mark, and the diminutive size of the whole plant, will always distinguish it from 
J. albicans, as will the obtuse and rounded ends of the lobes from J. Dicksoni. 
