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it may be readily known by its very dense acute entire-pointed leaves and
stout excurrent nerve. From D. fuseeseens, which it also resembles, its very
acute entire smooth subula will always separate it.
18. DICRANUM SAUTERI Br. Seh.
Dio icious ; in large soft s ilky tufts ; lea ves fa lca to -se cu n d, lanc.-
subulate, entire, nerve one-fifth width o f b a s e ; caps, e llip tico-cylind ric ,
lid obliquely ro s trate . (T. X X IV , A.)
Sm .— Dicranum Sauteri B r . S c h . Bry. eur. fasc. 37-41, p- 33. U 24 (-847). C. M u e l l . Synops. 375 (-849). S c h im p . Synops. 85 (i860), 2 ed. 87 (1876). De N o t . Epil. bri. ital. 626
(i86g). M ild e Bry. siles. 68 {1869). J u r a t z . Laubm. Oesterr.-ung. 43 (1882).
D io ic o u s ; in dense cushioned g los sy green tufts, becoming fulvous,
fuscous at base, with brown tomentum. L e a v e s v ery dense, rather rigid,
secund or fa lca te , channelled, lanceolate, g rad ua lly subulate, entire or
with a few teeth at point, nerve one-fifth width o f base, excur rent, cells
at base narrow and elongated, angular lax, quadrate, brown, upper
e longated. Perich. b ra c ts .sheathing, lon g ly subulate, caps, cy lin d ra ceous,
erect, slightly asymmetric, annulus simple, lid conic, obliquely
rostrate, long as capsule, te e th red, c le ft one-third.
Male plant sh orter, slender.
Var. ¡3. curvulum Lindi.
Capsule horizontal, more or less curved.
H a b .— Sub-alpine rocks ; very rare. Fr. 8— 9.
The var. fl. only is with some doubt admitted as British, and its claim
as such rests on specimens in a collection of the late A. O. Black, unnamed
and mixed with D. molle and fuleatum, the labels bearing localities in Braemar
(Cairn Taggart, Loch-na-Neem and Freuch Co rrie); Prof. Lindberg identified
it with a precisely similar form found in the Pyrenees. The Marchese
Bottini regards D. Sauteri as a variety of D. longifolium, from which it seems
to me to be sufficiently distinct in the leaf-base and section of nerve.
19. DICRANUM LONGIFOLIUM Ehrh.
D io ic o u s ; in large soft s ilky pa le green tufts ; lea ves falcato-secund,
lanc.-subulate, serrulate above at b ack and margin, nerve one-third
width o f b a s e ; caps, cy lindra ceous, lid pale, ob liquely subulate. (T.
X X IV , B.)
S y n .—Dicranum lougfolium E h r h . Dec. crypt, n. 114 (1786). H e d w . musc. fr. iii, 24. t. g
(1792), Sp. musc. 130 (1801). R o th Fl. germ iii, P. I, i66 (1795). B r id . musc. rec. II,
P. I, 161 (1798), Sp. musc. I, 183 (1806), Mant, 60 (1819), Bry. univ. i, 430 (1826).
S w a r t z musc. suec. 34 (1799). R o e h l . Moosg. deutsch. 334 (1800), Deutsch. fl. iii, 66
(1813). S c h u l t z Fl. starg. 297 (1806). W e b . M o h r Bot.Tasch. 172 (1807). S c h w a e g .
Suppl. I, P. I, 176 (1811). V o it musc. herb. 42 (1812). W a h l e n b . Fl. carp. 344
(1814). F u n c k Moost. 29, t. 20 (1821). H u e b e n . musc. germ. 248 {1833). D e N o t .
Syll. musc. 215 (1838), Epil. bri. ital. 625 (1869). H a r t m . Skand. Fl. B r u c h S c h im p .
Bry. eur. fasc. 37-40, p. 32, t. 25 (1847). R a b e n . Deutsch, kr. fl. ii, P. 3, 144 (1848).
C. M u e l l . Synops. i, 371 (1849). S c h im p . Synops. 84 (i860), 2 ed. 86 (1876). M i l d e
Bry. siles. 67 (1869). H o b k . Syn. br. m. 46 (1873). J u r a t z . Laubm. Oesterr.-ung. 43
(1882).
Dicr. Stirtoni W i ls . MSS. a short leaved form.
Dio icous ; in soft lax silky pale green tufts, fuscous below, black at
base ; stem a rcu ato— or geniculato— ascending, slender, dichotomous,
fa lca te at apex, sparingly radiculose. Le a v e s long, ra ther rigid, falcato-
secund, from a lanceolate base, lon gly capillaceo-subulate, subtubulose
above, nerve very broad, j¡ width o f base, occupying all upper part of
leaf, serrate at back and margin, cells a t base small narrow, the angular
lax, brownish, upper e longated rectangular. Inner perich. b ra c ts con-
volute-sheathing, abruptly apiculate with the excurrent nerve, caps,
erect, elongato-cylindraceous, straight or subincurved, estría te, fuscous ;
lid pale, with a subulate beak, long as capsule, teeth small, red, deeply
cleft.
Male plant more slender, b ra c ts fa lca te , innermost shortly acuminate.
H a b .— S tones and trunks o f trees in mountains ; rare.
Maidenbower Cra
1865) ! ! Glen :
js, Dumfries, with Grimmia patens (Herb. Kew).
’rosen {Fergusson 1868) ; all sterile.
Fr. 8— 9.
Ben Lawers {Stirton
N e x t to this comes ano ther E urop ean species, Dicr. albicans, B r. S ch .
(D. enerve, T h ed .), wh ich h a s a still grea te r development o f nerve, and in fact
cons titutes a transition to Leucohryum.
20. DICRANUM ASPERULUM Mitt.
D io ic o u s ; in s ilky tufts, tomentose a t b a s e ; lea ves fa lca te or
flexuose, subovate a t base, longly subulate with the serrulate nerve,
spinulose at b a c k ; caps, e re c t, oval-cylindric, lid straight, rostrate.
(T. X V I I , H.)
Svn.— Dicranodontium asperulum p.p. W i l s . in Kew Journ. Bot. IX, 296 (1857).
Dicranum asperulum M i t t . Journ. Lin. Soc. i, Suppl. 22 (1859). R a b e n h . Bryoth. eur.
n. 94^*
Dicranodontium aristatum S c h im p . Synops. 695 (i860), 2 ed. qq (1876). Brv. eur. suppl.
fasc. I-II, t. I (1864). M i l d e Bry. siles. 75 (1869).
Dicranodontium lutcscens S c h im p . M S S .= 2
Dicranum Dickicanum W i l s . MSS.
Dicranod. longirostrc var. fl. aristatum J u r a t z . Laubm. Oesterr.-ung. 52 {1882).
Didymodon aristatus L in d b . M u sc. scand. 25 (1879).
Dio icous ; in lax soft tufts 2— 3 in. high, y ellow green above, pale
brown or ferruginous below, with fine pa le or rufous radic les a t b a s e ;
stem decumbent a t base, very slender. L e a v e s remote and ovate-
a cuminate at base, becoming longer and c lose r upward, from an oblong-
lanceolate concave base, continued into a long channelled subflexuose
a rista, with 6 lo ridges a t b ack, serrulate a t margin, the highest
broader and more concav e , with the margin from the middle o f the base
upward sharply toothed and incurved, the arista very long, secund
a rcuate, formed o f the nerve which is sulcate and spinulose at back.