BRITISH J UNGERM ANNIiE. 
( J . Lyellii.) 
JUNGERMANNIA LYELLII. 
(TAB. LXXVII.) 
Jungermannia, fronde oblonga, subramosfi., tenera, costath, margine subintegerrimo : fructu e 
superiore parte frondium ; calyce duplice; exteriore perbrevi, margine laciniato-dentato ; interiore 
longh exserto, cylindraceo, subplicato ; calyptra calycem subexcedente. 
Hab. Bogs in the New Forest, Hampshire, and at Drumby Airy, a waterfall on the 
Noran, Angusshire. Mr. Lyell. — Bogs among Sphagnum latifolium and Hookeria lueens, 
near Bantry, Ireland. Miss Hutchins. — From some indifferent specimens, gathered at 
Tunbridge High Rock, Mr. Foster's Habitat , in the “Tunbridge List of Plants," it is, 
probablj', the “New Marchantia,” mentioned in that work. — (Bears fruit in May.) 
Plant growing in small loosely-matted patches. 
Roots not very numerous, simple, pellucid, almost colorless, proceeding from the nerve on 
the underside of the plant. 
Frond generally about an inch long, sometimes twice, or even, though very rarely, three 
times that length, horizontally appressed to the earth, or to the substances on which it 
grows ; of an oblong shape, being two or three lines in diameter, and nearly linear 
throughout, simple, or throwing out one or two lateral short branches (f. 7), or forked at 
the extremity (f. f. 1. 19); the margin waved, frequently entire, now and then beset with 
a few distant, unequally-sized teeth ; in the centre of the frond, and running the whole 
length of it, is seen a very distinct nerve, rather prominent on both sides ; the interior 
substance of this is hard and rigid (f. 4), and quite unlike that of the rest of the plant, 
of which the texture is remarkably thin and delicate, much more so than in J. epiphylla, 
and apprortching nearer to that of J.furcata. The reticulation is small, and the areola: 
roundish : the color a pale but pleasant green. 
Innovations (f. 20) are not unfrequent on this plant, arising from the underside of the nerve, 
as in J.furcata. In these, at first, nearly the whole breadth of the young shoot is occupied 
by the nerve, but they gradually bear a nearer resemblance to the parent plant, become 
furnished with roots, and are detached from the old frond. Sometimes these innovations 
are simple (f. 21), sometimes forked or branched, as is represented at f. 22. 
Male Fructification (f. f. 1 to 4) situated upon the nerve on the upper side of the frond, 
generally near the middle or base, and always on distinct plants from those which produce the 
capsules. 
