cells small, roundish-qnadrate, walls thin, trigones distinct
Stipules none; sometimes pseudo ones are found near the
branches of the stem ; then subulate, entire, or bidentate. Bracts
subrotnnd, tridentate to about -}, to sinuses and segments acute,
margin slightly dentate; bracteole small, ovate, bifid, sinus and
segments acute. Perianth terminal, oblong-obovate or oblong-
oval, upper portion 4-, 5-, and 6-plieate, nearly all antioal, one
fold often running down to the base, mouth contracted, ciliolate,
from 40 to 50 cilia, which are 2, 3, and 4 cells long. Capsule
roundish-oval, reddish-brown; spores and elaters reddish-brown,
elaters twice as broad as the spores.
Male stems often smaller, perigonial bracts terminal, about
4 or 5 pairs, closely imbricate, subrotund, tridentate, basal segment
incurved, ventricose; antheridia oval with short bearers, 2 or 3 in
eacii bract.
Pruits Alarch, April.
D im en sio n s.—Stems I to 2 inches long, ’3 mm. diam., with
leaves 2 'mm. to 2'5 mm. wide ; leaves 1'25 mm. long x IT mm.
broad, segments A mm.. 1- mm. x 1' mm., seg. '25 mm., 1- mm.
xA mm., seg. '25 mm.; cells '02 mm. x '03 mm.. '02 mm.
x-02 mm., 'Olo mm. x '02 mrn., '0175 mm. x '0225 ; bracts
I '5 mm. long x 1'75 mm. broad, segments -3 mm., 1'25 mm.
X l o mm., seg. ’o mm. : bracteole '75 mm. long x "5 mm. broad,
seg. -2 mm. ; periantli 3' mm. long x 1'75 mm. broad, 2'75 mm.
X 1 25 mm., l ’7o mm. x 1' mm., 2 'mm. x 1- mm. ; cilia at the
moutli of perianth -1 mm. : perigonial bract 1' mm. long x 1’15 mm.
broad,; antheridia '2 mm. x '175 mm.
H ab.— Growing in spreading patches, somewhat entangled
with the long rootlets, or creeping amongst mosses on shady
Avails or rocks, partial to limestone, but not peculiar to it. Not
iincominoD.
1. Penzance, W. Ctirnow. 7. Penmaenpool, E. M. Holmes;
Tyn-y-Groes, Holf fl Wild; Arthog, W. H. P . ; Cader Idris,
Alerionethsliire, W. H. P .; Caerwys, Flintshire, J. PL Lewis’;
Bettws-A -Coed. M. B. Slater, C. J. Wild. 8. Miller’s Dale’,
Derbyshire, G. A. Holt, W. H. P. 9. Easegill, near Leok, West
L a n e .,/. Wilson. 10. Ingleboro, Dr. Carrington; near Todraor-
d&n, John Nowell; Teesdale, Hr. 11, 12. Whitbarrow ;
Heversham Head c. f r .; Witherslack ; Low Wood, Windermere
Bow F e ll; Naddle F o re st; Kentmere, Westmorland, G. Stabler.
13. North side of Black Craig, New Galloway ; Grey Mare’s Tail,
W. Nichol; Dalsoairth & M ofiat,/. C'riMc&-/ia///i. 15. Ben Lawers,
Perthshire, H. Hoy er«; Banks of the Clyde, /F. Zyo«. 16. Aloidart,.
West Inverness, S. M. Macvicar.
I. Gleninaliier, Co. Wicklow, Hr. H. Moore.
Found on the Continent and in North America.
O b s .—This is the Jungermania quiucquedentata, Web., of Continental
authors, but it is absurd to call a plant which has uniformly
only 3 teeth “ quinquedentata ” ; certainly all the authors write of it
as having leaves with 3 to 5 and bracts with 4 or 5 segments, but
in all Continental and British specimens examined I find them
uniformly tridentate, without exception.
I t is also the Jungermania Lgoni of Taylor, and, since there is
a great uncertainty as to what the early authors understood, I use
Dr. Taylor’s name.
Dr. Spruoe wrote me ; “ Jung, quinquedentata Huds. is no doubt
what we call J. barbata.”
This, the most distinct species of the “ barbata ” group, has
the lower (antical) margin of the leaf tridentate, and the upper
(postical) margin is rounded and plane, vvhich cliaracteristios distinguish
it at once from any of the others.
The periantli often appears to be lateral by the production at
its base of robust, subpostioal branches.
D e s c r ip h o n o f P l a t e CXLVI.—Pig. 1. Plant natural size.
2. Portion of stem antioal view x 16 (Theden. Muse. Suec.
n. 144). 3. Ditto x 16 (Miller’s Dale, AV. H. P.). 4, 5. Leaves
x 24 (Bettws-y-Coed, AL B. Slater). 6. Portion of leaf x 290
(Arthog, W. H. P.). 7. Braot x 24 {.Tung. Lgoni, Tayl. Clyde,
Hb. Tayl.). 8. Ditto (Arthog, W. H. P.). 9. Bracteole x 24
{Jung. Lgoni, Tayl. Clyde, Hb. Tayl.). 10. Perianth x 16
(ditto). 11. Portion of the mouth of perianth x 85 (Arthog,
W. H. P.) 12, Perigonial bract x 24 (Bettws-y-Coed,
M. B. Slater). 13, Antheridium x 85 (ditto).