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B R IT ISH JUNGERMANNIÆ.
JU N G E RM A N N IA IN C ISA .
(TA B . X . )
/ J. inei&a.)
OERMANNIA, caule p ro stra to , depresso, s implic iusculo; foliis subquadratis, u n dula tis, subtr
if id is , s e g m e n t is in a q u a l i b u s , b ic ill ic d e n tic u l a ti s :
o r e c o n t r a c t o , la c e ra to .
f r u c tu t e rm i n a l i ; c a ly c ib u s o b o v a ti s ;
I
Jungermannia incìsa. S c h r a d e r , Samml. i i . p . 5 . R o t h , Germ. i i i . p . S S I .
Jungermannia fo liis taceris, muliidentalis, sessilibus. H a l l . Helv. l u . p . 5 9 . re. 1 8 6 2 ,
H ab. . H o lt Laws and Edgefield Heath, Rev. R. B. Francis.— H e rringfle e t, n e a r Yarmouth.
Mr. D . Turner.— Rocky places upon In gleborough, Yorkshire.—N e a r B an try , Ireland.
Miss iZaicftires,— L am beg Bog, Ireland, Mr. Templeton.—Foxinà in fructification n e a r
Croydon, Sun-ey, in Ju ly , 1811, by Air. Dtci-son.—Bogs, W estleton, Suffolk.— ( I t delights
chiefly in m oist places, and is o fte n found among Sphagna and o th e r mosses.)
P l a n t f o rm in g sm a ll, b u t v e ry d e n s e p a tc h e s o f a p a le g r e e n c o lo r ; th e s u r f a c e a p p e a r in g
e x c e e d in g ly b e a u t i f u l f rom th e n u m e ro u s c ris p e d a n d d e n ta te c i le a v e s , r e s em b l in g in m in i a tu r e
a t u f t o f l e t tu c e s . I t finnly a tta c h e s it s e l f to th e g r o u n d o r m o s s u p o n w h ic h i t g r ow s b y
m e a n s o f i t s a b u n d a n t f ib ro u s radicles, w h ic h p ro c e e d f iu m t h e w h o le le n g th o f th e u n d e r
sid e o f t h e s t e m , a n d a r e m u c h e n ta n g le d a n d m a t t e d to g e th e r .
T h e stems, which are p ro s tra te , ab o u t a q u a rte r o f a n inch long, and cylindrical a t
th e base, gradua lly become wider towards th e extrem ity, whe re th ey a re depressed,
and equal th e sLxth o f a line in diam e te r ; in gen e ra l they a re cj^uite simple,
th o u g h sometimes furnished w ith a small ram u lu s : theii- color is a very pale and
ple a sant green.
Leaves (f. f. 3. 5. 11) a t th e base o f th e stem la th e r distantly placed, th e re s t more
approximated, a t th e e x trem ity o f th e b a rren p lan ts frequently fo rm in g th ick tu fts
o r heads ; they a re subquadra te , longitudinally u n d u la ted , a t th e base semi-amplexicaul
and d e c u rre n t, th e an te rio r m a rg in a little involute, th e apex t r i o r quaclridentate ;
b u t h e re an d th e re a lowe r le a f ( f 6} is seen to be only ema rgina te : th e segments are
o f unequa l sizes, crisped and disto rted ; tlieii- ma rgins very frequently d en ta te with
one 01- two small te e th . T h e color o f th e le a f is an extremely pale g re en , approa ching
th a t o f J . tomentella. T h e reticulaiion (f. 14) is pellucid, th e cellules opaque, roundish.