B R I T I S H J U N G E R M A N N I Æ .
JU N G E RM A N N IA P LA N IFO L IA .
(TAB. L X V II.)
J u n g e rm a n n ia , caule erecto, subsimplice: foliis quadrifariàtn imbricatis, compresso-planis;
inferioribus m a joribus, ovatis ; superioribus cordatis ; omnibus elegantissime dentato-ciliatis.
H.ab. Upon Ben na B o rd ; and upon Ben Mac Davie, a mountain to the no rth o f th e Dee.
Mr. George D onn, 1812,—Summit o f Brandon. Dr. Taylor, 1813.
P l a n t g rowing in ra th e r closely-crowded patches o f a remarkably dingy brown color; always
intermixed with mosses and o th e r Jungermanniæ.
Roots, a few short brownish fibres, issuing principally from th e lower p a rt o f the plant.
Stems erect, from two to three inclies long, and about th e thickness o f packthread, flexuose,
filiform, for th e m o st part simple, b u t now and th e n forked : the ir color d ark brown : their
texture compact, rigid, and brittle.
Leaves (f. 2 ) truly quadrifarious in th e ir insertion, and imbricated on bo th sides o f the stem ;
those a t th e back of it the la rg e st, a line in length, plane, distichous, vertical, o f a
widely ovate figure ; the superior leaves scarcely h a lf so la rg e as th e rest, and obliquely
appressed to th em ; th e ir form nearly cordate ; th e whole arc beautifully dentato-ciliate
a t th e ir m a ig in s , o f a ra th e r da rk brown color, sometimes inclining to purple towards
th e extremity. T h e cellules (f. 5) are very minute, b u t somewhat distantly placed, and
frequently o f a paler color th an the interstices : th e texture th in , membranaceous ; when
dry, b rittle , like th e stem.
F r u c t if ic a t io n totally u n k n ow n .