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half-length o f caps, acute, annulus o f two rows o f narrow ce lls ; teeth
pale red, narrowly lineal-lanceolate, cleft, or perforated, the legs closely
cohering. Male plant more slender, repea tedly branched, b ra cts from
an ovate concave base, narrowly lineal-lanceolate.
Hab.— D amp shady rocks and by waterfalls, sometimes on trunks of tre e s ;
not uncommon, but rare in fruit. Fr. 10.
Dolgelly, Dennant and Conway c. fr. [Wilson 1830} ! ! Lythebeck, Eskdale {Spruce
1842) ! Crambeck and Howley Wood, Castle Howard [Spruce 1844) ! On trees,
Stapleton, Bristol [Thwaites 1843)! Powerscourt and Killarney {Tnyior). Brandon
Mountain [Moore). Glen Roy and foot of Ben Voirlich c. fr. Tore cascade. Eagle’s
nest and Cromaglown (Haut 1S67)! ! Dunoon and Trossachs [Hunt 1866)! Cwm
Bvchan and Tyn-v-Groes (Ho« 1882) !! Pigeon rock Mtn., Mourne Mtns., Co. Down
(Rev. H. Lett and C. Waddell 1885) !! Barmouth (Whitehead) !!
Var. ß. Daldinii (De Not.)
In wider tufts of a yellow-green co lou r; leaves shorter, broader, gradually
narrowed towards apex, or suddenly apiculate, very acute, two
marginal series of cells pachydermous, y e llow ; capsule small oblong.
S y n .— Didymodon cylindricus Var. ß. Daldinianus De N o t . Epil. 1. c. S c h im p . Synops.
2 ed. 165.
H ab.— I n more Alpine localities.
Ben Voirlich (McKinlay 1862). Ben More and Ben Lawers (Hunt 1865) ! ! Trossachs
(Hunt 1866) ! Borrowdale (Wilson 1864). Ben Arthur (Stirton 1864). Twll Du,
Caernarvon (Holmes 1876) ! ! Moy Laggan, Perth (Mrs. Farquharson 187g) ! 1
Tyn-y.Groes, Wales (Holt 1885) ! 1
Var. y. Holtii Braithw.
Plants robust, densely matted and tomentose, with stout straight stems
dark green above, black below ; leaves more dense, the upper often slightly
secund, erecto-patent, firm, apex rather obtuse, the nerve lost at point, cells
smaller, dense, nearly smooth.
H ab.— D ripping rocks and in the spray of waterfalls.
Bamford wood, Lancashire (Holt 1883) 1 ! Injebreck and Sulby glen, I. of Man (Holi
18S3)!! Clogwyn-du.Arrddu and Tyn-y-groes, Wales (Holt 1883) !! Cromaglown
and O’Sullivan’s cascade (Stewart and Holt 1885) !!
Much resembling M. tortuosa, but more slender, and readily distinguished
from it by the basal areolation, which in the latter is sharply defined from the
chlorophyllose in a direction running obliquely upward and outward. It
varies much in size, and when exposed to dripping water becomes dark
green and often much elongated.
Schimper’s Var. robustus, from Troutbeck, is only M. tortuosa.
19. MOLLIA HIBERNICA (Mitt.) Lindh.
D io ic o u s ; tall and branching. L e a v e s from an ovate clasping
base which is dilated upward, lanceolate-subulate, patent, entire,
nerved to apex, basal cells elongate rectangular, abruptly passing to
minute rounded chlorophyllose ones. (T . X X X V I , C.)
S y n .— Anoectangiuni Hornschuchianum (non H o p p e H s c h .) W i l s . B r y . b r it. 3 12 (18 5 5).
Tortula hibernica M i t t , in S e e m . J. B o t . 186 7, p . 329. B r a i t h w . in J o u rn . B o t . 18 7 1 ,
p. 294, T, 120, f. 5. H o b k . S y n . b r . m . 72 (18 7 3 ) .
Didymodon controvcrsus W i l s . M S S .
Barbula cirrifolia S c h im p . S y n o p s . 2 e d . 2 19 (1876).
D io ico u s ; in lax tufts, yellow-green above, rufescent below, tall,
2— 4 in. high, branched, not radiculose. Lea ve s la x below, becoming
longer and comose above, from an erect base, flexuoso-patulous when
moist, cirrato-crisp ate when dry, at the base becoming wider upward,
oval-oblong, concave and semi-amplexicaul, then longly lanceolate-
subulate and con cav e, the margin slightly undulate a t base, erect and
entire above, v ery minutely verruculose ; nerve yellowish, continued to
the apex, smooth at back, cells o f the dilated base pellucid, rectangular,
hyaline, suddenly joining the small quadrate chlorophyllose ones which
form the rest o f the leaf. Pe rich. bracts more longly sheathing,
flexuose and curved in the upper part. Ca lyp tra narrow, deeply cleft,
convolute below ; caps, equal, cylindric. Male infl. in th e ste lla te
coma, bra cts oblong and concave at base, shortly subulate ; antheridia
v ery numerous.
H a b .— We t rocks at Cromaglown, Killarney (Taylor) ! ! Brandon Mtn.,
Kerry (Moore 1862) ! !
This fine moss is very close to M. tenuirostris, but is readily distinguished
by the dilated base of the leaf and very different areolation. The fruit was
unknown until Schimper detected one or two old capsules, which had lost
their peristomes, and fig. 5 and 6 are copied from his drarvings.
20. MOLLIA FLAVOVIRENS (Bruch) Lindb.
Dio icous ; soft, cæspitose. Le a v e s from a sheathing oblong glossy
white base, lineal, undulate, very concave, nerve excurrent in a short
mucro. Cap s, erect, oblongo-cylindric, lid conic rostrate, teeth long,
filiform. (T. X X X V I , D.)
S y n .— Trichostomum flavovirens B r u c h in F lo r a , x ii, P . I I , 404, t. 2, f ig . 7 (1829). D e N o t .
S y l la b . 193 (1838), E p i l. b ri. i ta l. 502 (1869). B r . S c h . B r y . eur . fa s c . 18— 20, p. 6, t.
2 (1843). R a b e n h . D e u t s c h . kr. fi. li, S . 3 , 1 13 (1848). C . M u e l l . S y n o p s . i, 585
(184 g). S c h im p . S y n o p s . 152 (i860), 2 e d . 1 74 . M i t t , in S e e m . J . B o t . 1868, p. 97,
t, 7 7 , f. 1— 4. M i l d e B r y . s ile s . 105 {1869). H o b k . S y n . b r, m. 61 (1873). H u s n .
Mo u s s . n o rd -ou e s t 7 4 ( 18 7 3 ) , M u s c . g a l l . 86, t . 24 (18 8 5 ) . J u r a t z . L a u bm , o e s te r r .-
u n g . 106 ( 18 8 2 ) . L e s q . J a m e s M o s s e s N . Am e r . 109 ( 18 8 4 ).
Didymodon tricolor B a l s . D e N o t . in M em . a c c , T o r in . x l , 333 (18 38).
Tortilla flavovirens L in d b . de T o r t 252 ( 18 6 4 ).
Mollia flavovirens L i n d b . M u s c . s c a n d . 21 (1879).
Dio icous ; la xly cæspitose, sparingly branched, in soft dull y ellcw-
green tufts, ^— i inch high, fuscous or pale at base and tomentose.
L ow e r leaves v ery small, remote, suberect, upper longer, crowded in a