BRITISH JUNGERMANNIiE 
J. trilobata. 
JUNGERMANNIA TRILOBATA. 
(TAB. LXXVI.) 
Jungermannia, caule repente, flexuoso, subramoso : foliis supernb imbricatis, ovatis, convexis, 
obtuse tridentatis: stipulis lato-subquadratis, crenatis : fructu e parte inferiore caulis egrediente; 
calycibus oblongis, subacuminatis, ore lateraliter fisso. 
Jungermannia trilnbata. Linn. Sp. PI. ii. p. 1599. FI. Suec. p. 401. Weis, Plant. Crypt, 
p. US. Weber, Spic. FI. Goet. p. 143. Schrank, Bavar. ii. p. 497. Villars, 
Delph. hi. p. 9*24. Leers, Herb. p. 250. Enum. PL FI. Dan. p. 42. Huds. Angl. 
p. 513. Roth, Germ. hi. p. 396. Linn. Syst. Nat. ed Gmel. ii. p. 1349. With. 
ed. 3. in. p. 859. Lam. Encycl. Meth. hi. p. 281. Lamarck, FI. Fr. ed. 2. n. p.432. 
Weber et Mohr, Crypt. Germ. p. 409. 
Jungermannia radicans. Hoffm. Germ. n. p. 87. Engl. Bol. t. 2232. 
Muscoides terrestre repens, ex obscuro virescens, foliis superioribus et inferioribus ad extremi- 
tatcm dentatis. Mich. Nov. Gen. p. 10. t. 6. f. 2. 
Jungermannia caulibus convexis, foliis descendentibus , imbricatis , tridentatis. Hall. Helv . hi. 
p. 59. n. 1866. 
/3. minor; omnibus partibus duplo minoribus. 
Jungermannia triangularis. Schleicher, Cent. 2. 
y. minima; foliis valde minutis, indistinctis, distantibus, ssepe bidentatis integrisque. 
Hab. Subalpine parts of Great Britain, Scotland, and Ireland . — 3 is found in more elevated 
situations, among rocks; and y has been discovered in Ireland by Miss Hutchins. 
Plant growing in large and generally dense patches, sometimes being more than a foot in diameter, 
throwing out a few fibrous radicles, which are often forked, from the lower surface of the 
stem (f. 16). 
Stems from three to five inches in length, creeping horizontally upon the ground, and 
imbricating each other; sometimes simple, and beset here and there with innovations, 
at other times once or twice branched in a dichotomous manner, flexuose, rather rigid, 
of a brownish color. Flagella abundant, about an inch long, tapering, descending 
from the under side of the stem, where they have their origin, each at the base of a 
