(J. furcata.) 
BRITISH JUXGER3IANNI/E. 
Jungermannia furcata is one of the most common species of the genus, and, as such, is 
familiar to every student of Cryptogamic Botany. The conformation of its various parts, however, 
is deserving of the most minute investigation, for I have scarcely met with any species which offers 
at the same time so much beauty and singularity of structure united. Hitherto the curious calyx, 
the perigonium, and the gemmae, have escaped the notice of writers upon the subject, or have been 
but very imperfectly and incorrectly described. Even the illustrious Hedwig has been far from 
happy in his account of the antheriferous receptacle, the calyptra, and the seeds, all of which differ 
considerably from what I have myself had the opportunity of examining. In another part of this 
Monograph I shall have occasion to speak more fully on this subject. Roth is surely incorrect, when 
he says “ Calyx ex aversa frondium pagina propullulans, adscendens, conicus, ovatus, hirsutus, 
viridis. Corolla calyce brevior, tenuissima and further, “ab omnibus hujus phalangis in eo 
recedit haec planta, ut calyx ex adversa frondium pagina adscendat tubulosus, ovatus, corollam 
minorem inciudens cum in reliquis calyciformis e frondis substantia per integumentum commune 
dilaceratum protrudatur.” The corolla is surely the part that is protruded, and in this particular 
accords with all the rest of the Jungermannia frondosa. In its delicate texture, and in the strongly 
maiked though slender midrib, J. Jurcata resembles J. Lyellii, from which, and from every other 
species in the genus, it is nevertheless abundantly distinct. 
There is no reason whatever for considering the var. y. a Riccia. The Riccia fruticulosa of 
Flora Danica, I fully agree with Dr. Smith in thinking quite a different plant, and probably (if I 
may be allowed to judge from the figure) the Jungermannia palmata of Hoffmann. 
