II ;
li '
i ,;il;
I [
D i CRANACEiE .] 152 [Dicramm.
H ab.— W et sandy heaths and bogs, not common. Fr. 7.
Angus-shire (Don). Barmby moor, Yorks. [Teesdale. Spruce c. fr.). Stockton forest and
Langwith moor, York [Spruce 1842) ! Kinnordy, Scotland [Lyell). Waterdown and
Broadwater forests, Tunbridge Wells [Mitten). Foot of Mt. Shade, Stra’an, Banchory
c. fr. (Sim 1S77)! ! Ripon, Yorks. Trossachs [Stirton 1865).
Readily known from the last by its broader leaves with shorter more
acute points, papillose at back.
I I . DICRANUM CONGESTUM Bridel.
D io ic o u s ; tom e n to s e ; upper leaves crowded, secund, linear-
lanceo late , somewhat crisped, remotely serrate above, upper cells large,
angular, nerve \ width o f base, vanishing at a p e x ; capsule pale,
oblique, smooth. (T. X X I I , C.)
S y n .— Dicranum congestum B r id . Sp. musc. I , 176 (1806); Mant. 57 (1819); B r y . univ. i, 418
(1826). S c h w a e g . Suppl. I, p. I, 168, t. 42 (1811). R o e h l . Deutsch. fl. iii, 67 (1813).
F u n c k Moost. 28, t. 19 (1821). L in d b . musc. scand. 24 (1879).
Dicranum fuseeseens p.p. plur. auct.
Dio icou s ; stem erect i — 2 in. high, densely c lothed w ith ferruginous
tomentum, fa s tigia te-b ranch ed , yellowish green. L e a v e s more or less
secund, c ríspate when dry, broadly lanceo late w ith a short point,
can a licu la te a t base, ca rínate a b o v e ; nerve narrow and thin, J width
of base, lo s t a t apex, smooth or remotely serrate a t b ack and less
prominent, margins rem o tely and co a rse ly serrate above ; cells at base
elongated, v ery narrow, the angula r brown, in cra ssa te, quadrate, upper
2— 3 times la rge r than in D . fuseeseens, irregular in form, a t b a ck ra rely
faintly spinulose. Per. b ra cts sheathing, th e nerve excur rent as a short
subula, seta ta ll, straw-colored, caps, ovate-oblong, cernuous, smooth,
pale brown, more leptodermous, annulus double, lid pale, conic with a
long oblique beak, teeth pa le purple, spores greenish.
H ab.— Mountain rocks, very rare. Fr. 8.
Ben Lawers [Boswell 1873)! ! a few stems intermixed with D. fuseeseens.
Var. /3. flexicaule (Brid.) Br. Sch.
Stem much elongated, flexuose, reclining at base, scarcely tomentose ;
leaves elongated, laxer, falcato-secund, almost entire, yellowish green ; caps,
more curved, cernuous,
S y n .— Dicr. flexicaule B r id . Bry. univ. i, 42.
Dicr. congestum var.Jiexicazde B r . S c h . Bry. Eur. fasc. 37— 40, p. 36, t. 29 y.
Dicr. fuseeseens var. flexicaule W i l s . B r y . br. 7 7 . S c h im p . S y n . 88, e t 2 e d . 90. D e N o t .
E p i l. 622. M i l d e B r y . sil. 69. J u r a t z . Laubm. Oesterr.-ung. 46.
H ab.— Mountain rocks, not common.
Near the High Force, Teesdale [Spruce 1843)! Ben Lawers [Hunt 1865)!
Gar [Black).
Loch-na-
This moss has been almost universally combined with D . fuseeseens, until
Lindberg pointed out the distinctive chara cters; the broader leaves with
D i CRANACEiE .] 153 [Dicranum.
much narrower nerve and large irregular apical cells are quite sufficient to
separate it, and in habit it approaches far nearer to D. Bonjeani than to
fuseeseens, while the areolation at the lower part resembles that of D. scoparimn,
with pores in the cell walls.
S e c t . 3. A P O R O D IC T Y O N L in d b .
12. DICRANUM FUSCESCENS Turner.
D io ic o u s ; lea ves pa tent or secund, narrow, lon gly subulate, flexuose,
closely serrulate at margin and back, upper c e lls small, quadrate, nerve
f — i width o f base, forming all upper part o f su b u la ; capsule rufous,
less oblique, ligh tly str ia te . (T. X X I I , D.)
Sm .— Dicranum fuseeseens T u r n . M u s c . hib. 60, t. 5 , f. i (1804). Sm i th F l brit iii 1204
(1804), Eng. Bot. t. 1597. W i l s . Bry. br. 77, t . 18, ¡3 (1855). S c h im p . Synops. 87
(i860) 2 ed. 8g (1876) B e r k . Handb. br. in, 278 (1863). M i l d e Bry. sil, 6g (1869).
D e N o t Epil. 621 (186^. H o b k . Syn. br. m. 47 (1873). L in d b . Musc. r in d . 23
(1879). J u r a t z . Laubm. Oesterr.-ung. 45 (1882).
Dicranum rupestre B r id . Sp. musc. I, 177 {1806) ; Mant. 58 {1819) ; Bry. univ. i, 419 (1826).
Dicr. scoparmm fl. ftcscescens W e b . M o hr Bot. Tasch. 174 (1807). H o o k . T a y l . M u s c .
brit. 58, t. 18, fl. {i8i8). G r a y Nat. arr. Br. pl. i, 738 (1821).
Dicr. longirostrc S c h w a e g . Suppl. I, P. I, 170, t. 44 (1811).
Dicr. scoparium c . rupestre R o e h l . Deutsch. F l . iii, 66 (1813).
Dicr. congestum p.p. H u e b e n . M u s c . germ. 244 (1833). H a r tm . Skand. fl. B r S ch
Bry. eur. fasc. 37-40, p. 36, t. 29 (1847). R a b e n . Deutsch. kr. fl. ii, S. 3, 146 (1S48)'
C. M u e l l . Synops. i, 360 (1849). G ow -
Dicr, Kinlayanum S c h im p . MSS.
D io ico u s ; stem erect, 1— 4 in. high, tomentose, fa stigia te-branched.
L e a v e s c rowded, subsecund fa lca te subulate ca rín ate, s ligh tly crisped
when dry, subula very long, deeply channelled ; nerve th ick, prominent
at b a ck i width o f base, forming all the plano-convex point of
subula, strongly and densely serrulate at b ack, margins densely and
minutely s e r r u la te ; c e lls a t base rec tangular elongate, the angular
la x quadrate brown, upper small, regu la rly quadrate, spinuloso-
papillose a t back. Per. b ra cts sheathing, abrup tly narrowed into a
longer subula formed of the n e r v e ; seta stouter, fulvous, caps, oblong,
rufous-brown, longer, th icke r, less oblique, w ith a narrower mouth,
pachydermous, ligh tly sulca te, annulus subtriple, lid long as capsule,
conic w ith an oblique pale b e a k ; peristome intense purple, spores
brownish.
Male plants slender, intermixed w ith female ; infl. terminal, bracts
concave, lanceo late , subulate.
H ab.— Wet rocks in mountain districts, not uncommon ; frequent on all the
Scotch mountains. Fr. 8.
Var. fl. falcifolium Braithw.
Densely tufted, deep green, fastigiate ; leaves all falcato-secund, flexuoso-
cirrhate toward apex, shorter and less attenuated to point.
J '