BRITISH JUNGERMANNLE. 
( J ■ calyptri/olia.J 
JUNGERMANNIA CALYPTRIFOLIA. 
(TAB. XLIII. ) 
Jungermannia, surculo repente, ramoso: foliis bilobis; lobis insequalibus ; superioribus majoribus, 
calyptriformibus ; inferioribus obtuse quadrat is, .circumvolutis : stipulis oblongis semibifidis: fructu 
laterali; calyeibus oblongis, sursiun quinquedentato ; apiee depresso, piano; ore contracto. 
Hab. On the stems of the Ulex nana, near the ground, in heathy mountainous places in 
the neighborhood of Bantry, intermixed with J. Iiamatifolia. Miss Hutchins. — Mr. Lyell 
finds it growing intermixed with the same plant upon rocks at Lowdore. 
This singular Plant grows in little pale green tufts, scarcely half an inch in diameter. 
The roots are distantly scattered about the under side of the stems, and are composed 
of extremely minute, whitish, pellucid, simple fibres. 
Surculi from one to one and a half, rarely two lines in length, creeping, filiform, flexuose, 
once or twice divided with short, procumbent, patent, branches : they are of a pale 
green color, and have the cellules very visible under a magnifying power. 
The leaves (f. f. 3. 4. 5) are rather closely placed, bifarious, horizontal, patent, or erect, 
even on the same individual; at the base of the plant the largest, thence gradually 
lessening towards the apex of the branches, unequally two-lobed, having the superior 
one the largest (although, from the crowded mode of growth of the plant, the leaf 
is not unfrequently forced into such a position, that it may appear to be the inferior 
one, as may be seen in f. 2), four-tenths of a line in length, so precisely the shape 
of that sort of calyptra in mosses, which Mohr has called “ mitriformis,” that 1 cannot 
do better, in the specific character, than designate it by the term " calyptriformis.” 
In other words, it may be described as oviform *, its base narrowed, furnished with 
a narrow opening, which is about one-half the length of the leaf, its apex lengthened 
out, incurved and acute ; the lesser lobe (f. 5) is subquadrate, having the angles obtuse ; 
it is appressed to the larger one, half embracing it and concealing the opening (f. f. 3. 4). 
The color, throughout, is a pale yellow-green; the texture delicate; the cellules rather 
large, roundish. 
* The word ovate having been applied to flattened leaves, I trust I shall be excused for adopting a term, by which 
1 mean to express that a transverse section would represent a round figure, as :s seen by a similar section of an egg. 
