BRITISH JUNGERMANNliE. 
( J- setacea. J 
JUNGERMANNIA SETACEA. 
(TAB. VIII.) 
Jungbrmannia, surculo repente, pinnatim ramoso : foliis undique imbricatis, binis, setaceis, 
articulatis, patcntibus, incurvis : fructu tenninali ; calycibus oblongis ; ore aperto, ciliato 
Jungermannia setacea. Weber, Spicil. p. 155. 
Jungermannia multiflora. Huds. Angl. p. 510. Linn. Mant. p. 310. Pollich, Palat. m. 
p. 182. Oed. Enum. PL FI. Dan. p. 41. Linn. Syst. Nat. ed. Gmel. n. p . 145o. 
Lamarck, Encycl. Bot. hi. p. 282. With. hi. p. 859. 
Jungermannia sertularioides. Linn. Suppl. p. 449. Meth. Muse. p. 116. t.4.f.6. Michaux, 
Bor. Am. ii. p. 278. 
Jungermannia paueflora. Dickson, Crypt. Fasc. ii. p. 15. t. 5./. 9. Linn. Syst, Nat. ed. 
Gmel. u. p. 1349. 
Jungermannia trichophylla, var. 3. Roth, Germ. in. p. 366. 
Lichenastrum multflorum exile , foliis angustissimis. Dill. Muse. t. 69. f. 4. a. b. ? 
Hab. Near Croydon. Mr. Dickson. — Holt Bogs, among Sphagnum capillifolium. Rev. 
R. B. Francis. Mountains adjoining Lough Bray, near Dublin. Mr. D. Turner.— Bog, 
near Bantry. Miss Hutchins.— Bogs at Westleton, Suffolk. 
Plant sometimes forming dense tufts, but frequently growing almost singly in thick beds of 
Sphagnum, among which it is not uncommonly met with, drawn up, and affecting the same 
mode of growth as the moss. t 
Root a few minute, whitish, simple radicle . ■ -pceeding from nearly the whole length of 
the under side of the plant, especially n<.,a- its base. 
Surculi varying exceedingly in length, from two or three lines to nearly two inches, or 
even more, scarcely so thick as the human hair, creeping, generally once or twice 
irregularly forked, with segments of uncertain length, and irregularly pinnated with 
rather distant, short, patent branches. 
Leaves rarely single, generally growing in pairs (f. 6), and sometimes, though seldom, 
three together (f. 7), placed at short distances from each other on every side of the 
plant, very minute, so that their form is imperceptible to the naked eye, not being 
much more than the twentieth of a line long ; under a microscope they are found to 
