JUNGERMANNIA emargiaata.
Notched Junger mannta.
CRYPT0GAM1A Alga;.
G e n . C h a r . Maleflowers feffile.
Capfule on a ft a Ik rifing from a (heath, of 4 valves.
Seeds attached to elaftic filaments.
S p e c . C h a r . Stems fimple or divided,eredl. Flowers
terminal. Leaves alternate, roundifh, bluntly
cmarginate, entire, fpreading, without auricles.
S y n . Jungermannia emarginata. Ehr hart. Beltr. fafc.
3 . 80. Sehr ad. Sphil. 7 5 .
J. macrorhiza. Dickf^Crypt. fafc. 2 . 1 6 . t. 5 . ƒ. 10.
With. 8 7 2 . Hull. 278.
I t appears from the Linnaean herbarium that Dr. Swartz
afcertained and named this Jungermannia many years ago,
before Profeffor Ehrhart defcribed it in his Beiträge. Mr.
Dickfon, who fir ft found it on the Scottifh mountains, not
having had any reafon to think it already known, publifhed it
in his fecond Fafciculus by the name of macrorhiza. Afterwards
Mr. Griffith, who favoured us with thefe fpecimens,
difcovered it in North Wales.
It grows in alpine moift ftony fituations, flowering early in
fummer; fometimes on rocks in rivulets, when it becomes
more luxuriant and of a darker green, lofing its purple tints.
The roots are large, ftrong and perennial. Stems' ere£t, in
tufts, either fimple or divided at the bafe, clothed with alternate,
rather fpreading, concave, roundifh, or fomewhat wedge-
fhaped, leaves, perfectly entire in their margin, bluntly emar-
ginate or nicked at their extremity, finely dotted with pellucid
points when examined underamicrofcope; their colour for the
moft part green at the bafe and edges, purple in the middle. No
auricles or ftipulaa aceompany the leaves. The {heath of the
fructification we have always found terminal (Dr. Schrader
mentions it as occafionally lateral), blunt, entire. Stalk half
an inch long, white. Capfule of four lanceolate brown valves.
iOZ2