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D iCRANACyE. ] i i6 [Seligeria.
The pretty little species which constitute the genus Seligeria, have a
great resemblance to each other and require care to discriminate. Besides
our native species there are also found in Europe S . crassinervis L in d b .—
diversifolia L in d b . and suhhnmersa L in d b . from Scandinavia, with 5 . polaris
B e r g g r . from Spitzbergen ; the two latter have colored angular cells as in
Dicranum, and form the transition to the genus Blindia.
C l a v is to t h e S p e c i e s .
Peristome none.
Peristome present.
Seta straight when moist.
Capsule turbinate.
Leaves ovato-lanceolate, rather obtuse.
Leaves lanceolate, subulate.
Perich. bracts reaching to capsule.
Perich. bracts not reaching capsule.
Leaves shortly lanceolate, in 3 ranks.
Leaves longer, setaceous in upper half.
Capsule narrowly pyriform.
Seta arcuate when moist.
Donii.
calcarea.
acutifolia.
trifaria.
pusilla.
paucifolia.
setacea.
1. SELIGERIA DONII (Sm.) C. Muell.
Autoicous ; leaves lan ceolate, subulate, minutely serrate a t base.
Capsu le erect, truncate, ovate, gymnostomous ; lid broadly conic.
(T. X V I , G.)
Syn.— Gymnostomuin Donianum S m . Eng. Bot. t . 1582 (1806). H o o k T a y l . Musc. Br. 13, t. 7
(1818). G r a y N a t . arr. Br, pl. i, 716 (1821). H o o k . Fl. scot. P . 2, 123 (1821) ; Br. Fl.
ii, 10 (1833). B r id . Bry. univ. i, 66 (1826). S c h w a e g r . Suppl. I l l , P. I, 6, t. 207
(1S27).
Auodus Donianus B r . S c h im p . Bry. eur. fasc. 33-6, p. 3, t. i (1846). R a b e n h . Deutsch.
Kr. fl. ii, S. 3, 131 (1848). W i l s . Bry. br. 56, t. 7 (1855). S c h im p . Synops. 112 (i860) ;
et 2 ed. 124 (1876). B e r k . Handb. br. m. 287 (1863). H o b k . Syn. br. m. 38 (1873).
Seligeria Doniana C. M u e l l . Syn. i, 420 (1849). H a r t m . Skand. fl. 5 ed. 397 (1849).
S p r u c e in Ann. Mag. Nat. hist. 2 ser. iii, 479 (1849). J u r a t z . Laubm. Oester.-Ung.
68 (1882).
Seligeria Donii L in d b . in Oefver. K. Vet. akad. Foerhand. 1864, p. 187. M i l d e Bry.
Siles. 86 (1869). De N o t . Epil. Bri. ital. 656 (1869).
Autoicous ; v ery .small, gregarious, yellowish-green ; stem very
short, simple. L e a v e s erect, straight, from an ovate-oblong serrulate
base, lanceolate-subulate, deeply channelled, acute, c ren u la te ; nerve
o c cupying all upper part o f su b u la; c e lls o f base rectangular, incrassate,
pellucid, upper smaller quadrate, chlorophyllose. Perich. b ra c ts more
obtuse, semivaginant at b a se ; capsule on a stra ight yellowish seta,
erect, minute, truncate-ovate, with a short tumid neck, pale olivaceous,
leptodermous, gymnostomous, exannulate ; lid b ro adly conic, suboblique,
columella exserted after the lid falls. Male infl. on a basal
branch, without paraphyses, b racts oblongo-lanceolate nerveless.
PIab.— O n limestone and sandstone ro ck s. F r . 8.
D1CRANACA2.] 117
Den of Diipplin, Perth {Don) \ Den of Airlie and Norran water {Drummond)\ Glen
Shira, Inverary [Rev. C. Smith) ! Winch bridge, Teesdale [Black 1854) ! Cawsey
Dene; Newcastle (Bowmau). Mowthorpe dale and Crambeck (S^niCi) ! Fern, Brechin
[Fergusson) 1868. Blair Athol [Miss Mclnroy 1859) ! Woolsonbury hill, Sussex [Mitten
1859). Rocks below Rolston Scar, Yorks. [Baker 1855). Todmorden, High green
Wood, and Mitholme Clough, Heptonstall [Nowell 1854) ! ! Hardcastle crag, Hebden
bridge [Hunt 1867) ! ! Castleton, Derby (Whitehead 1868) ! !
One of the most elegant of our minute mosses, and probably often
overlooked from its inconspicuous appearance.
2. SELIGERIA PUSILLA [Ehrh.) Br. Schimp.
Autoicous ; very short. Le a v e s lanceolate-subulate, acute, faintly
crenulate above, with minute pe lluc id areolation. Capsule pyriform,
oval ; lid conic, obliquely subulate. (T . X V I , H.)
Syn.—Afzelia pusilla E h r h . Pl. cr. n. 183 (1787), et Beitr. vii, 100 (1792).
Weissia pusilla H e d w . Stirp. cr. ii, 78, t. 29 (i78g),-Sp. musc. 64 (1801). B r i d . musc.
rec. II, P. I, 76 {1798); Sp. musc. I, 114 (1806); Mant. 43 (1819); ^ 349
(1826). R o e h l . Moosg. Deutsch. 155 (1800) ; Ann. Wett. ges. in, 106 ; et peutsch. H .
iii, 50 (1812). L a M a r k & C a n d . Fl. franc, i, 455 (1805). S c h w a e g . Suppl. I, P. I, 68
( 18 1 1 ) . H o o k . T a y l . M u s c . brit. 4 7 , 1 . 15 ( 18 18). F u n c k Moost. 14, t. 9 ( 18 2 1 ). G r a y
Nat. arr. br. p l. i, 732 (18 2 1 ) . N e e s H o r n s c h . Bry. germ. 11, 102, t. 34 f. 25 (18 3 1).
H o o k . Br. fl. ii, 23 (1833). H u e b . musc. germ. 142 (1833). M a c k . Fl. hib. P. 2, p . 15
(1836). D e N o t . Syll. musc. 227 (1838).
Bryum pusillum H o f fm . Deutsch. fl. ii, 33 (1795)-
Grimmia pusilla S c h r a d . Syst. samml. kr. gew. i, 10 (1796), et Journ. Bot. ii, P. I, 56
(1799}. R o th Tent. fl. germ, iii, P. I, 147 (1800). S m . Fl. brit. m, 1184 (1804). W e b .
M o hr Bot. Tasch. 140 (1807). S c h k u h r Deutsch. Kr. gew. P. 2, 57, t. 25 (1810).
Grimmia parasitica V o it in S t u r m Deutsch. Fl. ii, heft 11 (1810).
Weissia parasitica R o e h l . Deutsch. Fl. iii, 51.
Seligeria pusilla B r . S c h im p . Bry. eur. fasc. 33— 6, mon. 4, t. i (1846). Ra b e n h . Deutsch.
Kr. Fl. ii, P. 3, 132 (1848). C. M u e l l . Synops. i, 418 (1849). W i l s . Bry. bnt. 54, t. 15
(1855). S ch im p . Synops. 113 (i860), et 2 ed. 124 (1876). B e r k . Handb. br. m. 288
(1863). L in d b . in Oef. K. Vet. ak. 1864, p. 187. M i l d e Bry. siles. 86 (1869). D e N o t .
Epil. Bri. ital. 655 (1869). H u s n . mouss. nord-ouest 44 (1873). H o b k . Syn. br. m. 37
(1873). J u r a t z , Laubm. OevSierr.— Ung. 68 (1882).
{Grimmia ScUgcri W e b . M o h r Tasch. 140 et 459. Weissia Scligcri W a h l . Fl. lapp. 322
(1812). N e e s H o r n s c h . Bry. Germ, ii, 105, t. 34, f. 26, is a small dark green form with
shorter leaves, according to Schimper’s examination of an original specimen.]
A u toicous ; in loose dwarf silky dark-green tufts. Stem v ery short,
simple or divided ; lower leaves short, narrowly lanceolate, upper long,
lineal setaceous, margin minutely crenulate ; nerve thin, vanishing at
apex or slightly excurrent, wings veiqf narrow, distinct to apex, cells at
base pellucid, elongato-rectangular, upper smaller, quadrate, nearly
empty. Perich. b ra cts semivaginant below, lanceolate-subulate, nerve
narrower, indistinct at b a s e ; capsule erect, on a straight pale y e llow ,
seta, twisting to left when dry, ovate, olivaceous, when dry and
deoperculate strongly turbinate, sulca te, fuscous ; lid with an oblique
subulate beak, teeth o f per. orange, flat, remotely articulated, mfle.xed
when moist, irregular at margin. Male infl. gemmaceous, on a distinct
b ranch or at base o f female, bra cts minute, ovate, concave apiculate.
H ab.— Damp shady rocks of sandstone or limestone, not uncommon.
Fr. 5— 6.