BRITISH J UNGERM ANNIiE. 
( J. orcadensis. J 
JUNGERMANNIA ORCADENSIS. 
(TAB. LXXI. ) 
Jungermannia, caule erecto, simplici : foliis arctb imbricatis, erectis vel patentibus, cordato- 
ovatis, apice emarginatis, marginibus recurvis. 
Hab. Upon the Wart hill, the highest mountain of Hoy, in the Orkneys; found near its 
summit, in 1808. — Ambleside, in Cumberland; and at Catlaw, Kinnordy, Scotland. 
Mr. Lijell . — Summit of Brandon. Dr. Taylor. 
Plant either growing in loosely-matted patches of a few inches in diameter, or, more frequently, 
scattered among mosses and other Jungermannite. 
Roots consisting of dense, but short, simple, semipellucid fibres, which clothe the under 
surface of the plant. 
Stems from one to two inches in length, erect, filiform, flexuose, simple, or only producing 
one or two innovations, and those generally towards the extremity of the plant. 
Leaves closely placed and subimbricated, scarcely half a line long, of a widely ovate figure, 
approaching to cordate, patent, or erect and secund, at the base semiamplexicaul and 
decurrent ; at the extremity, furnished with a rather deep and obtuse notch. The margins 
on each side of the leaf are recurved (f. 7) throughout the whole plant. The texture is 
compactly cellular ; the cellules roundish. The color a brownish green. 
No Fructification, either Male or Female, has yet been discovered; but 
Gemma are found by Mr. Lyell on his Kinnordy specimens, situated on the points of the 
terminal leaves. They are collected into compact balls or spherules, and each granule, of 
which they are composed, is pellucid, of a yellowish green color, remarkably angular 
(f. f. 7. 8). 
