BRITISH JUNGERMANNIA. 
( J. concinnata J 
JUNGERMANNIA CONCINNATA. 
(TAB. III.) 
Jungermannia, caule erecto, ramoso, apice incrassato compressoque : foliis bifariis, arctissime 
imbric-atis, compactis, erectis, concavis, ovatis, obtusis, emarginatis : fructu terminali ; calycibus 
nullis. 
Jungermannia concinnata. Lightf. Scot. n. p. 736. With. hi. p. 863. Engl.Bot.t. 2229. 
Jungermannia julacea. FI. Dan. t. 1002. (bene.) Hoffmann, Germ. n. p. 82. Roth, 
Germ. in. p. 366. Schrader, Spicil. p. 75. Lamarck, FI. Fr. ed. 2. ii. p. 437- 
Hab. Barren spongy places near the summits of the Scotch and Irish mountains, abundant. 
Plant growing always in very thickly-matted tufts, often covering a surface of ground of some 
feet in diameter ; conspicuous at a considerable distance from its silvery hue. 
Stems nearly erect, occasionally procumbent at the base, varying from their most common 
height of scarcely half an inch to an inch or more, simple, or bearing here and there 
a few, scattered, patent or suberect branches, which, as well as the stems themselves, 
are cylindrical and filiform in their lower parts, but towards the apices visibly incras- 
sated and compressed: the color of both stems and branches is a dirty brown ; when 
dry they are brittle. 
Leaves (f. f. 4. 5) erect, bifarious, closely imbricated in two rows, so as entirely to conceal 
the stem, resembling (as Lightfoot well remarks), under a highly-magnifying power, 
the texture of a braided lock of hair, or that of a plaited-thonged whip : they are 
concave, ovate, acutely emarginate at the extremity, with obtuse and entire segments. 
The cellules are minute, the interstices wide, forming a pellucid reticulation. The color 
is a yellowish green, more or less inclining to brown, having a silvery and glossy 
appearance like that of Bryum argenteum, which cannot well be represented in the 
drawing, and is particularly conspicuous in the dry specimens. Some plants, indeed, 
which grow on much exposed rocks, want this appearance altogether, and are of a 
deep purplish brown almost inclining to black : in every state much of the margin of 
the leaf, and sometimes the extremity, for one-tliird of the way down, is diaphanous, 
whitish, and, as it were, scariose. 
