BRITISH JUNGERMANNI/E. 
(J. Dicksoni.J 
JUNGERMANNIA DICKSONI. 
(TAB. XLVIII. ) 
Jungermannia, caule ascendente, subsimplice: foliis bifariis, inaecjualiter bilobis ; lobis condupli- 
catis, inferioribus majoribus, utrisque anguste ovatis, subintegerrimis, acutis: fructu terminali; 
ealycibus ovatis, plieatis; ore contracto, dentato. 
Hab. Found many years since in Scotland by Mr. Dickson. — On the C'astle-Hill, Kinnordy, 
Kerrie-muir, most abundant, producing anthers and capsules in August. Mr. Lyell . — 
Mountains about Dublin. Dr. Taylor. 
Plant growing in small and densely-matted tufts. 
Roots a few minute, whitish, simple, fibres, proceeding from near the base of the stem. 
Stems from a quarter of an inch to almost half an inch in length, filiform, slightly tlexuose, 
at the base mostly a little procumbent, in the rest of the plant erect, undivided, or 
sometimes, though rarely, bearing a simple branch or innovation : the color partakes of 
that of the leaves : the texture is, in the upper part, tender and cellulose, below more 
compact ; somewhat brittle when dry. 
Leaves (f. f. 4, 5, 6) more or less closely placed in a bifarious manner, patent or horizontal, 
towards the apex of the plant frequently secund, about a quarter of a line long, deeply 
divided into two unequal conduplicate lobes or segments, of which the inferior is about 
twice the size of the superior; but both of the same figure, narrowly ovate, with acute 
apices ; their margins are entire, or only slightly, and principally in the upper leaves, 
irregularly toothed. Their general color is a yellow-green approaching to olive, in 
shady situations of a more uniform green ; the lower leaves mostly incline to a dirty 
brown. The cellules are small, roundish, of an equal size throughout. 
