Bryum tenue imberbe et pallidum, foliis crebrioribus. D i l l . H i s t . m u s c . 382, t . 48, f . 46
( 1 7 4 1 ) e t H e rb .
Didymodon rigidtiîus H e d w . Musc.fr. iii, 8, t. 4 (1792), Sp. musc. 104. H o o k . T a y l .
Musc. brit. 67, t. 20 (1818). H o o k . Fl. scot. P. II, 135 (1821).
Desmatodon rupestris F u n c k in B r id . B r y . u n iv . i, 822, p.p . ( 18 2 7 ).
Trichostomum rigidnlum var. fi. densum B r u c h S c h . Bry. eur. fasc. 18-20, p. 10, t. 7
{1843). W i l s . Bry. brit. 114 (1855). S c h im p . Synops. 149 (i860).
Trichostomum rigidnlum C. M u e l l . Synops. i, 570 (1849).
Trichostomum neglectum W i l s . MSS.
Torhila rigidula L in d b . d e T o r t . 24g (1864). B r a i t h w . in S e em . Journ. B o t . 18 7 1 , p.
293, t . 119, f. 5. H o b k . Syn. br. m. 69 (1873).
Barbula rigidula M i t t . in S e e m . Journ. Bot. 1867, p. 326. M i l d e Bry. siles. 118 (1869).
S c h im p . Synops. 2 ed. 206 p.p. (1876). J u r a t z . Laubm. oesterr.-ung. i io (1882).
L e s q . J a m e s Mosses N. Amer. 123 (1884).
Dio icous ; densely tufted, subpulvinate, fuscescent or dir ty green.
L e a v e s from an e re c t base, appressed to stem, p a tent and subrecurved,
rigid, when dry somewhat incurved and contorted, lon g ly lanceolate,
ca rin ate, recurved in upper margin, revolute below, nearly smooth,
basal areolation pellucid, nar rowly rectangular, upper distinc t, minutely
quadrate, nerve brownish, continued with lamina into a th ick round,
ra ther obtuse, obscure point. Perich. b ra c ts resembling the upper
leaves but more a cuminate ; caps, on a red seta, oval-oblong, erect,
stra ight or a little curved, brown, glossy ; annulus narrow o f 3 rows o f
small cells, lid obliquely beaked, h alf length o f capsule, te e th on a
narrow basal membrane, the legs free or p a r tly conjoined, obliquate or
subcontorted. Male plant more slender.
H ae.— D amp rocks and shady walls ; not uncommon. Fr. 7— 9.
Castle Howard (Spruce 1884) ! Blackdown and Hurstpierpoint (Mitten 1847) ! Cliviger
(Nowell) ! ! Buxton and Borrowdale (Wilson 1864) ! ! Castleton (Holt 1883) ! !
Plymouth and Taunton (Holmes 1868) ! Whitbarrow and Syergh Fell (Barnes 1867) ! !
Callander and Arrochar (HziwZ 1868) ! ! Scalby Mills (Sprzice 1843)! Banchory and
Crathie (Sim 1872) ! Park Lane, Broughton (Wild 1879). Wychewood, Oxon
(Boswell 1879)!! Loch Maree (Boswell 1875)!! Brandon Mtns. (Moore). Sleive
Gallion, Derry (Stewart 1876) ! ! Wetherby and Boston Spa, Yorks. (Wesley 1879) ! !
More compact than the last species, and growing in small tufts, never in
wide-spreading sheets. On dry walls it is very short and compact, and may
be taken for B . fallax, but the basal areolation will always distinguish it.
Th e older synonymy of this species and the last is so confused that it is not
possible to separate them.
9. BARBULA ACUTA Brid.
Dioicous ; cæspitose. L e a v e s e recto-patent, ovate, lan ceo la to -a cu minate,
margins recurved, nerve excurrent, perich. long, flexuously
acuminate. Cap s, erect, oblong, exannulate, lid subulate. (T. X L , C.)
S y n .— Tortula acuta B r id . S p . m u s c . I , 265 (1806).
Barhula acuta B r id . M a n t . m u s c . 96 ( i8 ig ) , B r y . u n iv . i, 5 54 ( 18 2 6 ) .
Barbula gracilis S c h w a e g . S u p p l. I , P. I , 12 5, t . 34 ( i 8 i i ) . S c h u l t z R e c e n s . Barb. 198,
t .3 2 , f. 3 ( 18 2 3 ) . B r id . Bry. u n iv . i, 536 ( 18 26 ). B r . S c h . Bry. eu r . f a s c . 1 3 - 1 5 , p . 22,
t. 8 (1842). H u e b e n . M u sc . germ. 329 (1833). R a b e n h . Deutsch. kr. fl. ii, S. 3, 106
(1848). C. M u e l l . Synops. i, 609 {1849). S c h im p . Synops. 171 (i860), 2 ed. 210.
M il d e Bry. siles. 117 (1869). H u s n . M o u s s . nord-ouest 82 (1873), Musc. gall. 106, t.
29 (1886). J u r a t z . Laubm. oesterr.-ung. 114 (1882). L e s q . J a m e s Mosses N. Amer.
127 (1884).
Tortula gracilis S c h l e i c h . Pl. cr. Helv. (1807). H o o k . G r e v . in B r e w s t . Ed. Journ. i,
300 (1824). De N o t . Syll. 179 (1838), Musc. ital. I, 57, t. 28 (1862), Epil. bri. ital. 552
(1869). W i l s . Bry. brit. 123, t. 32 {1855). L in d b . de Tort. 249 (1864).
D io ico u s ; in rather dense, low tufts, olivaceous green or fuscescent.
Stem simple or slightly branched, ra ther rigid. Le a v e s straight, erecto-
patent, when dry la xly imbricated, smooth, concave, from an ovate base,
lanceolate, cuspidate with the stout fuscous excurrent nerve, margin
revolute below, a reolation minute, rectang, at base, roundish above.
Pe rich. b ra c ts broader, the nerve prolonged into a long flexuose arista.
Caps, on a rigid red seta, erect or subincurved, brown, small, ovate-
oblong, with a longish attenuated lid ; ann. none, peristome short, orange-
red, slightly contorted. Male infl. gemmiform, bracts ovate, acuminate.
Hab.— Limestone walls and sandy ground, rare.
Durdham Downs, Bristol, ster. (Thwaites 1843) ! St. Helier, Jersey (Cardot 1885)!!
Known at once by its short, aristate leaves, and perhaps overlooked
from its small size and sterile condition ; it is quite probable it will be found
in Cornwall. Mr. Thwaites’s specimen is very dwarf, but it corresponds in
leaf-structure with the true plant.
10. BARBULA CYLINDRICA {Tayl.') Schimf.
Dio icous ; la xly tufted. L e a v e s lanceolate-subula te, patent, nerved
to apex, margin recurved below, plane above, cells quadrate at base,
obscure above. Caps, erect, e llip tico-cylindric, lid conic attenuated.
(T . X L , D.)
S y n .— Zygotrichia cylindrica T a y l . in M a c k . Fl. hib. P. 2, 26 (1836).
Tortula insnlanaDE N o t . in Mem. acc. lo r in . xI,32o (1838), Syllab. i8o (1S38). B r a i t h w .
in Journ. Bot. 1871, p. 328. H o b k . Syn. br. m. 68 (1873).
Barbula vinealis Var. flaccida B r . S c h . Bry. eur. fasc. 13-15, p. 24 (1842). S c h im p .
Synops. 171 (i860). J u r a t z . Laubm. oesterr.-ung. 114 (1882).
Tortula vinealis W i l s . Bry. br. 124, t. 42 (1855).
Tortula cylindrica L in d b . Bot. Not. 1865, p. 76.
Barhula cylindrica S c h im p . Synops. 2 ed. 208 (1876). L e s q . J a m e s Mosses N. Amer.
125 (1884). H u s n . Musc. Gall. 106, t. 29 (1886).
Barbula vinealis Var. luxurians J u r a t z . in litt,
Barbula insulana H u s n . M o u s s . nord-ouest 81 (1873).
D io ic o u s ; in lax fuscescent tufts, plants e re c t and decumbent,
more or less flexuose, slender .1— i in. high. L ow e r leaves more lax, longly
lanceolate, upper densely crowded, from a longish ovate erect base,
narrowly lanceolate-áubulate, ca rinate, all patent and patulous when
moist, subrecurved and a rching upward, subcirrate when dry, at base
!;
I