( J. curvifolia. ) 
BRITISH JUNGERMANNLE. 
The perichcetial leaves (f. f. 6. 7), six or seven in number, resemble the rest in every 
particular, excepting only that their segments are less acuminate and by no means 
incurved. 
Male Fructification hitherto undiscovered. 
Female Fructification arising from the base of the surculi.i — Short ramuli support the 
Calyces (f. f. 8. 9) which are oblong or oblongo-ovate, in their color and cellules much 
resembling the leaves. Towards the apex they are a little plicate, and at the mouth, 
which is somewhat contracted, are seen a few short teeth. 
Calyptra (f. 9) ovate, whitish, reticulated. Style short. 
Barren pistilla (f. 10) surrounding the base of the calyptra : each is lineari-lanceolate, 
longitudinally and transversely striated. 
Peduncle half an inch or more in length, of a silvery whiteness, often becoming 
spirally twisted. 
Capsule ovate, deep brown, opening into four equal, ovate or oblongo-ovate valves. 
The seeds and spiral filaments I have but lately had an opportunity of seeing in a 
perfect state : they exactly resemble those of J. bi'cuspidata and connivens. 
The natural affinity of this plant with the two species just mentioned is very striking, 
even to a superficial observer j more particularly to the former of them, from which, however, 
it essentially differs in the great length and in the incurved segments of the leaves, as well 
as in the erect (and by no means recurved) apices of the perichaetial leaves. The places of 
growth, too, of the three plants are widely different ; the present species seeming to be 
altogether alpine, and partaking of the rich purple hue which is so common to other plants 
of the genus in similarly elevated regions. 
We owe our first acquaintance with this Jungermannia, as well as with the one last described, 
( J ■ connivens J to the acuteness of Mr. Dickson. The figure given in English Botany does not 
exhibit the leaves so much incurved as is the case in my specimens} and, indeed, the whole plant, 
in that work, appears to bear a nearer approach to J. bicuspidata than I have ever observed 
it to do. 
REFERENCES TO THE PLATE. 
FIG. 
1. A tuft of J. curvifolia, natural size. 
2. A single plant of the same. 
3. The same magnified 
4. Portion of the stem and leaves 
5. Single leaf 
0. Exterior perichcetial leaf 
7- Interior perichcetial leaf 
8. Calyx, peduncle, and capsule 
9. Calyx opened, shewing the calyptra, Src 
10. Barren pistilla 
6 
4 
3 
5 
3 
4 
3 
2 
