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Hab.— Cliffs at Babbicombe, Devon [Davies i 856) ! ! Vale of Llanthony
(Boswell 1871 ) ! !
Var. y. elata Schimp.
Tall, in large tufts, deep green above, fuscescent belo-w, 2 in. high ; leaves
longer, more solid, muticous.
S y n .— T r i c h o s t o u iu in c r i s p u lu m Var. €. e la t u m Schimp. Synops. 2 ed. 172.
Hab.— Muckross and Cromaglown [Hunt 1864) ! ! Cheddar Cliffs [Boswell
1873)!! Ingleton, Yorks [West 1882)!! Barmouth [Holt 1882)!!
Rathlin Is., Ireland [Stewart 1S82) ! !
Var. 8. nigro-viridis Braithw.
Plants tall, very slender, in very dense cushioned tufts, deep green above,
black below ; stems rêpeatedlj^ dichotomous ; leaves small, shorter, more
patent, with smaller areolation, the margins incurved above, upper cells
papillose at back.
Hab.— Near the summit of Ingleboro [Nowell 1857) ! !
This moss is most variable and presents forms which offer the greatest
difficulty in assigning them a place under this species or M. braehydontia;
the typical form is definite enough, for the nerve apex being curved up and
then excurrent from the lamina as a short mucro, gives the leafpoint a
mimic resemblance to the bow of a boat, but in the v ai. viridulum this is so
tapered off" as frequently to become indefinite, and we have then only to
rely on the general obtuseness and incurved edges of the leaf-apex. Lindberg
is of opinion that the var. fi. is Didymodon trifarius S w a r t z .
15. MOLLIA LITORALIS [Mitt.) Braithw.
D io ico u s ; densely cæspitose. L e a v e s oblong-ligulate, obtuse,
mucronate with the excurrent nerve. Cap s, oblong ; lid conico, rostrate.
(T. X X X V , E.)
S y n .— T r i c h o s t om u m l i t o r a l e M i t t , in S e e m . Journ. Bot. 1868, p. g g , t. 77, fig. 7— 9,
H o b k . vSyn. br. m. 61 (1873). H u s n o t M o u s s . nord-ouest 74 (1873), Musc. gall. 88.
t. 25 (1885). S c h im p . Synops. 2 ed. 180 (1876).
D io ico u s ; densely cæspitose, dull y e llow green above, brown at
base. Stems J— i j in. high, simple or innovating, interrupted and
comose. L e a v e s short ere c to -p a ten t, sligh tly recurved in the upper
half, when dry incumbent and a rcu ato -in curved , oblongo-ligulate,
obtuse, channelled ; nerve yellowish, stout, e.xcurrent in a short mucro ;
cells at base oblongo-rectang. pellucid, above rounded and obscure,
minutely papillose. Capsule on a short pale yellow seta, oblong, tapering
at base, fuscescen t, w ith a red mouth, lid yellow, conico-roste lla te ;
peristome pale, the teeth rather sliort, w ith two slender nearly equal legs.
H ab.— S ea-coast in the S. and West of England. Tr. 3— 4.
Santly ground below the cliffs east of Hastings (Mitten). 'Whitsand bay (Brent).
Aldrington beach, Sussex (Davies 1864) ! ! Staddon heights, Plymouth, Devonport
and Newquay (Holmes 1868) ! ! Badger’s cross, Penzance c. fr. (Curnow 1867) • •
St, Minver, Cornwall (Tellam 1871) ! ! Penmon, Anglesey (Boswell 1874) ! ! Tigh-
na-bruaich on the Clyde (Dr. Stirton 1864, named by Wilson T. mutabile 'Var.
brevifolium) ! Between Loch Ness and Loch Oich, a very tall form (Hunt 1866) ! !
Rannoch (Dr. B. White 1867) ! Douglas, Gobey valley and sandy cliffs at Peel, I. of
Man (Holt 1884) ! i Carlingford Mtn,, Ireland (Rev, C. Waddell 1883) ! ! Barmouth
(Holt 18 8 2 ) ! !
Var. p. angustifolia Lindh. in litt.
Stem more slender, with laxer, more patent, narrower linear leaves.
Hab.— Cromaglown, Killarney [Lindberg, 1873) ! !
This moss is almost exactly intermediate between M. crispula and brachy-
dontia, and some of the varieties of these species so nearly connect the two, that
it is rather difficult to define the present one. The most important character
is derived from the form of the leaf, this is short and almost lineal in outline
on the main axis, but on the innovations broader towards the point as in
some Pottias, the apex ends somewhat as in crispula, but the nerve does not
curve up, but runs straight out m an acute triangular mucro as in flavo-virens,
while the margins do not roll inward, but are plane, in which, as well as in
the areolation it agrees best with braehydontia. The stem varies greatly in
size and branching, lateral innovations being very frequent, the leaves of
which on the lower part are very small and distant, suddenly becoming
accrescent upward into a coma.
Prof. Lindberg also sends M. litoralis from Dingle, Howth, and O'Sullivan’s
cascade, and the male plant from Cromaglown; the latter is in lax tufts, i inch
high, the male infl. minute, gemmiform, in the axils of the comal leaves, the
bracts 4— 5, ovate acuminate, laxly areolate, nerved to apex.
i 5. MOLLIA BRACHYDONTIA [Bruch) Lindh.
D io icous ; cæspitose. L e a v e s b ro adly lanceolate, gradually
acuminate, cuspidate with the flat stra ight excurrent nerve. Caps,
ovate, lid conic, rostrate, teeth o f peristome very short and irregular.
(T. X X X V I , A.)
S y n .— Trichostomum brachydontium B r u c h in Flora xii, P. II, 393, t. i, f. 3 (1829). L in d b . de
Tort. 228 (1864). H o b k . Syn. br. m. 60 (1873).
Didymodon brachydontius W i l s . in H o o k . Br. Fl. ii, 30 (1833), Eng. Bot. Suppl. t. 2735
(1834). M a c k . Fl. hib. P. II, 18 (1836).
Trichostomum mutabile B r u c h MSS. De N o t . Syllab. 192 (1838), Epil. bri. ital. 504
(i86g). B r . S c h . Bry. eur. fasc. 18— 20, Mon. 8, t. 5 (1843). R a b e n h . Deutsch. k r.
fl. ii, S. 3, 114 {1848). C. M u e l l . Synops. i, 571 (184g). W i l s . Bry. brit. 112, t. 41
{1855). S c h im p . Synops. 150 (i860), 2 ed. 170. B e r k . Handb. br. m. 261 (1863).
M i l d e Bry. siles. 103 (1869). H u s n . M o u s s . nord-ouest 74 (1873), Musc. gall. 87,
t. 25 (1885). J u r a t z . Laubm. oesterr.-ung. 103 (1882).
Tortula braehydontia, M i t t . Journ. Linn. soc. Bot. xii, 148 (1869).
Mollia braehydontia L in d b . M u s c . scand. 21 (1879).
Dio icous ; densely cæspitose, J— 2 in. high, dull yellow-green above,
fuscous below. L e a v e s firm and twisting when dry, erecto-patent when
moist, lower minute, upper comant, elongato-lanceolate, acuminate, the
nerve flattish, stout, yellowish, excurrent in a flat straight a cute p o in t;
margin subundulate, erect, cells at base small, rectangular, pellucid,
above very minute, hexagonal, opake. Perich. b ra cts narrower, linear,
lon gly a cuminate ; caps, on a longish slender purple seta, erect, ovate,