( J . setacea.) 
BRITISH JUNGERMANNHE. 
I have quoted under this, rather than under J. tricophylla, J. sertularioides of the Methodus 
Muscorum, on account of the lateral calyces, although the author has remarked " a J. setacea 
Web. ( multiflora Dill, et Linn.^1 differt foliis capillaceis, sequalibus, articulatis. The leaves, 
however, of both the one and other are rather setaceous than capillary. The same observation 
is equally applicable to the synonym of Michaux, as, indeed, must be the case with almost 
every author, who attempts to describe these minute vegetables within the compass of a few 
words or sentences. 
The leaves of this Jungermannia, though not in reality verticillate, have the appearance 
of being so, from the circumstance of their growing on all sides of the surculus, and the 
general resemblance of both J. setacea and J. trichophylla, under the microscope, to Conferva 
verticillata is worthy of remark. 
REFERENCES TO THE PLATE. 
FIG. 
1. J. setacea, fertile specimen, natural size. 
2, 3. Barren plants, natural size. 
4. Portion of a female plant, magnified 6 
5. Portion of a ramulus bearing gemma: 5 
6. 7. Leaves 4 
8. Perichcetial leaves 4 
9. Calyx 5 
10. Calyptra 3 
11. Capsule discharging its seeds, and filaments 2 
12. Seeds and spiral filaments 1 
