(J, Ilutchinsue.) 
BRITISH JUNGERMANNIiE. 
distantly-placed, spiniform teeth, the largest generally forming the apex of the leaf; 
these teeth give the whole plant a most beautiful appearance, and are of such a size as 
to be conspicuous, even to the naked eye, when the plant is held against the light : 
that part which is in reality a lesser division of the leaf, or lobule, or, as it is called 
by Linnffius and in the specific character, auricle (f. 5.), is very minute, scarcely mea- 
suring the twentieth part of a line in length, appearing an ovate, inflated appendage, 
frequently having a spiniform deflected tooth ; it is attached near the base of the lower 
margin of the leaf, or, more correctly speaking, the lobe, to the under surface of which 
it is closely appressed. The reticulation of the whole is small and opaque, with areolae 
or cellules of a very irregular figure, l^it approaching to quadrate. The color is a 
very dark green with an olive tint : when held against the light the auricles appear of 
a deeper hue in consequence of their figure: this form, indeed, is not the same 
throughout the whole plant; as may be seen in the terminal leaves (f. 6.), which do 
not appear to have arrived at their full size ; they differ widely from the rest in 
being divided into two lanceolate segments ; the smaller one of which is the expanded 
auricle, and scarcely a fourth less than the larger division ; both are spinuloso-dentate. 
Exactly similar to these are the 
Pericluetial leaves (f. f. 7. 11), of which there are two, embracing with their segments 
Stipules ovate, approaching to orbicular, divided nearly half way down from the extremity, 
by an acute sinus, into two, equal, slightly-denticulated, sharp segments. There is one 
stipule to each pair of leaves, which in color and texture they exactly resemble. 
Male Fructification, at present unknown. 
Female Iructification, as far as I have hitherto had the opportunity of remarking, always 
arising from the axillae of the branches (f. 2.). 
Calyx, (f. f. 8. 9. 11.) rather more than half a line in length, obcordate, compressed and 
plane on its upper surface, its under side prominent with a longitudinal ridge, so that 
a transverse section would present the figure of a triangle: the mouth small, con- 
tracted, a little elevated and entire. 
the lower part of the calyx. 
are probably minute tubercles. 
