(J. polyanihos .) 
BRITISH JUNGERMANNIiE. 
Plant generally growing in rather loose and straggling patches, easily detached from its native soil. 
Roots more or less abundant upon different individuals, issuing in small tufts from the under 
side of the 
Stems, which are. either wholly procumbent, or at the apices only inclined to be ascendant, 
filiform, Hexuose, from one to two inches, or more, in length, simple, or once or twice 
irregularly branched; frequently, also, producing innovations, which, at an advanced 
period, are scarcely to be distinguished from the branches themselves. 
Leaves rather closely, but still alternately, placed in two rows, somewhat imbricating each 
other with their margins, horizontal in their direction, about half a line in length, but 
decreasing in size from the middle towards the base, as well as towards the extremity; of 
a nearly quadrate figure, with the angles obtuse ; their surface is plane, or but slightly 
convex; the base decurrent at the lower margin; the extremity entire in most instances, 
though often emarginate, especially upon the innovations, the notch varying from obtuse 
to acute. Once or twice I have observed a leaf to have two of these notches, thus forming 
a trifid leaf, which, indeed, may have arisen from an accident. The texture is delicate ; 
the cellules of a roundish form : the color, for the most part, a pale green, varying 
in intensity, in sheltered and exposed situations. 
Stipules (f. 5) of a narrow lanceolate form, divided nearly down to the base, into two entire, 
subulate, strait segments. Under a microscope they exhibit the common reticulated 
appearance of the leaves, which they further resemble in their color. 
Perigonial leaves mostly situated at the extremity of the plant, eight or ten, or more, in 
number, resembling the cauline ones in every thing, except in having their base swollen 
for the reception of the Anthers (f. 8). 
PenchcElial leaves (f. f. 9 . 10) very small, ovate, obtuse, unequally serrated at their 
margins : a few of these, rather resembling scales than leaves, surround the base of the 
calyx, and are only seen upon the proper calycine stalk. 
Male Fructification in the axillae of the perigonial leaves. 
The Anthers are spherical, reticulated, of a pale greenish or olive color , situated upon short 
whitish footstalks. 
Female Fructification upon short proper footstalks, resembling small ramuli, which originate 
f,om the under sille of the P^t, and, from a bent or curved base, become erect. 
Calyx very short, scarcely half so long as the calyptra; at the base cylindrical, compressed 
towards the extremity, widely ovate, truncate, split into two lips, each of which is 
variously cut and laciniated at the margin: the clefts, it may be observed, are unequal • 
that on one side extending to about three-fourths of the length of the calyx, while the 
opposite one is scarcely half so deep (f. f. 9 . lo). 
Calyptra (f. 9) exserted, twice the length of the calyx, oblongo-obovate, white, membrana- 
ceous, semi-pellucid, reticulated, tipped at the extremity with the short tubular style 
1 eauncle scarcely an inch in length, white, cellular. 
Capsule ovate, approaching to orbicular, 
transverse furrows. 
of a brown color, marked with longitudinal and 
Seeds (f. 11) spherical: both they and the spiral filaments, 
double helix, are of a fulvous color. 
which are composed of a 
