693 
hepatic.®. (liverworts.) 
3. J. coimivens, Dickson. Stems creeping, flexuous; leaves 
nearly orbicular, with a broad decurrent base, distant , a little wider 
than the stem, 2-cleft to £ or J of their length, the sinus obtuse; seg¬ 
ments acute, connivent; reticulations large; involucral leaves 3-5- 
cleft; perianth slender, the mouth lacerate-ciliate.—On rotten wood. 
4* J. curvifolia, Dickson. Fruit-bearing branch short; stems 
creeping; leaves imbricated, ascending, nearly orbicular , inflated at the 
ventral base , lunately 2-cleft; the segments long-linear , inflexed ; invo¬ 
lucral leaves erect, 2-3-cleft, serrate; perianth narrow, plaited-trian- 
gular, the mouth denticulate. — Rotten logs, &c. 
J. bicuspid at a, L. Fruit-bearing branch short; stems 
loose, procumbent; leaves distant or crowded , half vertical , ovate, a 
little wider than the stem, 2-cleft to the middle, the sinus obtuse ; seg¬ 
ments acute; involucral leaves spreading at the apex, 2-5-cleft, re- 
pand-serrulate; perianth elongated, the mouth denticulate. — On va¬ 
rious substances: a small and common species. 
6. J. divaricata, Engl. Bot. Fruit-bearing branch elongat¬ 
ed ; stems prostrate, rigid, thick; leaves distant , spreading , rather 
fleshy, equalling the stem in diameter, oblong, the sinus and segments 
acute; involucral leaves numerous, imbricated, 2-3-cleft, serrulate; 
perianth oval, plaited above; the mouth membranaceous, denticulate. 
(J. byssacea, Auct.) — Among mosses and on decayed wood: a mi¬ 
nute, dark-green species. 
7 - J. sefiformis, Ehrhart. Stems erect or ascending, and, with 
the leaves, terete-sulcate; leaves toothed at the base, 3 -4-cleft; the lobes 
channelled , ovate-oblong , acute ; amphigastria ciliate-toothed at the base , 
deeply 2-cleft, with lanceolate segments; perianth oval, plaited. — Al¬ 
pine regions of the White Mountains, Oakes. 
J. barbata, Schreber. Stems procumbent, sparingly branch- 
e d ; leaves roundish-quadrate, 3-5 -lobed, the sinuses obtuse and undu¬ 
late ; lobes obtuse, acute, or mucronulate, variously directed ; amphi¬ 
gastria (when present) broad, entire or 2-toothed; perianth angularly 
plaited to near the apex, the mouth denticulate. — Hilly districts, on 
the ground, rocks, &c. Subject to many varieties. 
9- J* Micbauxii, Weber. Stems ascending, flexuous by re¬ 
peated innovations from below the summit; leaves crowded, erect- 
spreading, rather saccate at base, and quadrate, 2-cleft, the sinus nar¬ 
row ; the lobes acute, incurved ; exterior involucral leaves large, ser¬ 
rulate, the inner smaller; perianth oval, rather club-shaped, the ob¬ 
tuse apex plaited, the mouth fringed. — Alleghany Mountains. 
10. J. incisa, Schrader. Stems prostrate, thick, rather flat, 
rooting copiously ; leaves densely crowded, somewhat quadrate, waved, 
2 - 6-cleft, the segments unequal ; perianth oval or obovate, the mouth 
plaited, denticulate. — Damp, shaded places, on the ground. A small 
species, with pale glaucous-green foliage. 
