TaiJiXTT.
JU N G E RM A N N IA O B TU S IFO L IA .
(TAB. XXVI.)
J u n g e rm a n n ia , caule ascendente, simplice : foliis bifariis, in®qualitèr bilobis; lobis conduplicatis,
obtusis, in teg e rrim is ; inferioribus ma joribus, su b a c ina c iformibus; superioribus ovatis; fi-uctu
te rm in a li; calycibus obovatis, ore contra c to dentato.
Jungermannia fo liis pinnatis, ovatis,
(exdusis syn o n ym isj
onferlis, ex apice fioriferis. H a l l . iieZv. iv , p , 6 1 .9
H a b. Neai’ Heddon on th e Wall, N orthum be rland. Mr. Thornhill— Very ra re in Ireland,
whe re Miss Hutchins has discovered i t only in one spot, ne a r Bantry.
Obs. I t bears fructification in March and April.
P l a n t g rowing in dense ly-ma tted tu fts , two o r thre e inches in diameter, firmly a tta ched to the.
soil, by means o f th e ir numerous, th ick
Roots, which consist of simple, pellucid fibres, an d issue most copiously from every pa rt
o f th e
S tem s: these a re a scending, or, ivhen m u ch crowded, nearly e re c t, seldom e.xceeding three
o r four line,s in len g th , simple, th o u g h th e re is often an appearance o f th e ir being
branched, from y oung shoots, w hich a re n o t unfrequently p roduced towards th e e xtrem ity
o f th e p l a n t : th e color is a d irty g re en , more or less approaching to a pale brown.
Leaves bifarious, distichous, and horizontal, ra th e r closely imbric a ted, so much so, as
entire ly to conceal tlie s tem ; they a re smallest a t th e base, la rg e r and more crowded a t
th e apex, p a rticula rly o f th e ste rile p la n t, from a qua rte r to h a lf a line long, somewhat
o f a roundish figure (supposing th e le a f to be expanded, f. 4 .), divided ab o u t h a lf way
down, from th e extrem ity, in to two, unequa l, conduplicate, vertical lobes, o f which th e
infe rior is th e la rg e st, oblong, and a little curved on one side, so as to be sciinitiir-
shaped; th e su p c ria r, or lobule, is ovate, o r oblongo-ovate, in th e up p e r ones, an d is
closely appressed, in a diagonal direction, to th e la rg e r portion o f th e le a f; both a re
remarkably o btuse a t Ih e ir apices ami rounded, th e ir ma rgins every ivhere entii-e, except,
indeed, in a few o f th e te rm in a l leaves, which, un d e r a h ig h power o f tlie microscope.