BRITISH JUNGERMANNLE. 
(J. obtusifoliaj 
JUNGERMANNIA OBTUSIFOLIA. 
(TAB. XXVI.) 
Jungermannia, caule ascendente, simplice : foliis bifariis, inaequaliter bilobis ; lobis conduplicatis, 
obtusis, integerrimis ; inferioribus majoribus, subacinaciformibus ; superioribus ovatis: fructu 
terminali ; calycibus obovatis, ore contracto dentato. 
Jungermcinnia foliis pinnatis, ovatis , confertis, ex apice floriferis. Hall. Helv. iv. p. 61 f 
(exclusis synonymisj 
Hab. Near Heddon on the Wall, Northumberland. Mr. Thornhill. — Very rare in Ireland, 
where Miss Hutchins has discovered it only in one spot, near Bantry. 
Obs. It bears fructification in March and April. 
Plant growing in densely-matted lufts, two or three inches in diameter, firmly attached to the , 
soil, by means of their numerous, thick 
Roots, which consist of simple, pellucid fibres, and issue most copiously from every part 
of the 
Stems : these are ascending, or, when much crowded, nearly erect, seldom exceeding three 
or four lines in length, simple, though there is often an appearance of their being- 
branched, from young shoots, which are not unfrequently produced towards the extremity 
of the plant : the color is a dirty green, more or less approaching to a pale brown. 
Reaves bifarious, distichous, and horizontal, rather closely imbricated, so much so, as 
entirely to conceal the stem : they are smallest at the base, larger and more crowded at 
the apex, particularly of the sterile plant, from a quarter to half a line long, somewhat 
of a roundish figure (supposing the leaf to be expanded, f. 4.), divided about half way 
down, from the extremity, into two, unequal, conduplicate, vertical lobes, of which the 
inferior is the largest, oblong, and a little curved on one side, so as to be scimitar- 
shaped; the superior, or lobule, is ovate, or oblongo- ovate, in the upper ones, and is 
closely appressed, in a diagonal direction, to the larger portion of the leaf; both are 
remarkably obtuse at their apices and rounded, their margins every where entire, except, 
indeed, in a few of the terminal leaves, which, under a high power of the microscope. 
