94 HEPATICE. (LIVERWORTS.) 
J. barbita, Schreber. Stems procumbent, sparingly branched; leaves 
sp 
roundish-quadrate, 3-5-lobed, the sinuses obtuse an nd undulate ; lobes obtuse, 
ticulate. — Hilly districts, on the ground, rocks, &c.: variable. 
Michattxii, Weber. Stems ascending, flexuous by repeated inno- 
vations from below the summit; leaves crowded, erect-spreading, rather saccate 
at base and quadrate, 2-cleft, the sinus narrow; the lobes Ss acute, incurve 
terior involucral leaves large, serrulate, the inner smaller; perianth oval, wth 
club-shaped, the obtuse apex lala. "the mouth Muged: — Alleghany Moun 
tains. ae 3) 
0. meisa, Schrader. Stems prostrate, thick, rather flat, rooting co- 
piously ; pul densely crowded, somewhat quadrate, waved, 2-6-cleft, the 
segments unequal; perianth oval or oe the mouth plaited, denticulate. — 
Damp, shaded places, on the ground. — A small, pale green species. 
11. J. imtermédia, Lindenberg. Stems pro woe almost simple ; leaves 
roundish-quadrate, 2-cleft; the upper ones crowded into he ads, and 3-4-cleft ; 
involucral leaves 3— a-cleft, slightly serrate, connate at wo base ;, perianth itor, 
ovate-triangular, the mouth plaited, denticulate.— On the ground. — A small 
species. (Eu.) 
* * * Leaves nearly orbicular, undivided ; amphigastria different or obsolete. 
Stems procum| mbent:; leaves half vertical, emar- 
h 
aia Bie ovate-twiangular, 1 ~2-toothed on - pig near the base $ 
3. J. Schradéri, Martius. Stems creeping, flexuous ; leaves elliptical- 
orbicular, rene: outer involucral leaves large, elongated, entire or emargi- 
nate, spreading at the apex; the inner smaller, more or less laciniated ; amphi- 
astria obsolete; perianth oval-obovate; the mouth plaited-lobed, its lobes 
ciliate. (J. orbicularis, Michx.?)—Decayed logs, &c. ; common. — Foliage 
often dark purple. (Eu. 
iM. J. Taylori, Hook. Stems erect, y simple; leaves orbicular, 
with large areole; amphigastria naa aie ; perianth oval, compressed 
at the mouth, truncate and 2-lobed.— Bogs; mountains of New England. — A 
large species, with purple foliage. (Eu.) 
15, J. cremulata, Smith. Stems prostrate, branched ; leaves orbicular, 
ascending, those bie the ee ome and bordered by large marginal 
cells ; een obova’ , the mouth much contracted, 
th argins of psa Mobile, ‘Minbeiias (Eu.) 
% * % * Leaves unequally wes epi (i. e. folded a the involucral 
ones 3—5-cleft: peria y , plait 
‘16. J. exséeta, Schmidel. et ascending ; aes lobe of the leaves 
small, acute; ventral lobe concava, acute or 2-toothed. — Boggy places, decayed 
wocd, &c. (Eu.) 
ae, + cyl eae i in eee ee! 
SU ener 
