greyish or brownish-black ( K - , C aC l- ) , often evanescent.
Apothecia small, convex, immarginate, b la ck ; paraphyses concrete,
violet- or bluish-black a t the apices; hypothecium thick,
brownish-red or purplish-black; spores linear-oblong, 3-septate,
0,014-22 mm. long, 0,004-6 mm. thick ; hymenial gelatine bluish
then dark-violet with iodine.—J3. milliaria var. 8 meleena Mudd
Man. p. 188 (1861). Lecidea melsena Nyl. in Bot. Not, 1853,
p. 182; Carroll in Journ. Bot. v. p. 256 (1867); Cromb. Lich.
Brit. p. 71 ; Leight. Lich. PI. p. 329; ed. 3, p. 353.
Exsicc. Mudd n. 159 ; Johns, n. 376.
Eeadily distinguished by the very dark thallus and apothecia.
Hab. On turfy ground, occasionally on dead wood, in upland districts.—
Distr. Apparently very local in England, Wales and Ireland ;
common on the Grampians, Scotland ; not seen from the Channel
Islands.—B. M. Near Lyndhurst, New Forest, Hants ; Dartmoor,
Devon ; Cader Idris, Merioneth ; Ingleby Moor, Cleveland, Yorkshire ;
Eskdale, Cumberland; Achosragan Hill, Appin, Argyll; Ben Lawers,
Eannoch, and at base of Ben-y-Gloe, Perthshire; Upper Glen Dee,
Braemar, Aberdeenshire ; Howth, Dublin; Croghan, Killarney, Kerry.
23. B. leucoblephara Arnold in Flora Ixvii. p. 574 (1884).—
Thallus determinate or subeffuse, thin, opaque, greyish- or
greyish-green (K + yellow, C aC l- ) . Apothecia small, plane,
margined, brownish-black or black, blackish within, the margin
white; paraphyses concrete; hypothecium brownish-black ; spores
fusiform-oblong, 3-septate, colourless, 0,010-19 mm. long, 0,004-6
mm. thick ; hymenial gelatine bluish then violet-coloured with
iodine.—Lecidea leucoblephara Nyl. in Ann. Sci. Nat. ser. 4,
xix. p. 338 (1863); Leight. Lich. PI. ed. 3, p. 351 ; Cromb. in
Grevillea xxii. p. 57.
Exsicc. Larb. Lich. Hb. without number.
Easily recognized by the white pubescent margins of the apothecia.
Hab. On rocks (found on the Continent on furze, heather, etc.).—
B. M. Near Kylemore, Connemara, Galway.
24. B. rhexoblephara A. L. Sm.—Thallus effuse, thin, greyish
or dirty-white ( K - , C aC l- ) , often little visible. Apothecia
ra th e r small, black, urceolate, then plane, with a thickish
prominent deeply-crenate margin; hypothecium thick, black,
dark-brown in thin section; hymenium whitish ; paraphyses
brown, somewhat thick and septate a t the apices; spores oblong-
or fusiform-ellipsoid, 3-septate, 0,017-21 mm. long, 0,006-7 mm.
th ic k ; hymenial gelatine pale-bluish with iodine.—Lecidea
rhexoblephara Nyl. in Mem. Soo. Cherb. v. p. 337 (1857) &
in Ofvers. K. Vet. Akad. Forh. 1860, p. 297; Carroll in Journ.
Bot. iii. p. 290 (1865); Cromb. Lich. Brit. p. 89 ; Leight. Lioh
FI. p. 333 ; ed. 3, p. 355.
Distinguished by the peculiar coronate margin of the apothecia
on account of which it was separated by Th. Fries as a new genus,
Bhexophiale (Lioh. Arct. p. 205 (I860)). Our specimens are
sparingly fertile ; the apothecia are somewhat scattered or occasionally
approximate.
Hab. On decaying mosses among schistose rocks in an alpine
locality.—B. M. Summit of Ben Lawers, Perthshire.
25. B. premneoides A. L. Sm.—Thallus effuse, thinly leprose,
pale- or greyish-greenish ( K - , C aC l- ) . Apothecia moderate,
plane, margined, black ; paraphyses slender ; epithecium a t times
slightly greenish-suffused ; liypothecium black ; spores oblong,
obsoletely or thinly 3-septate, 0,019-25 mm. long, 0,007-8 mm.
thick ; hymenial gelatine wine-red with iodine.—Lecidea premneoides
Nyl. in Flora xlviii. p. 147 (1865) ; Leight. in Ann. Mag.
Nat. Hist. ser. 3, xvii. p. 62 (1866) k Lich. FI. p. 333 ; ed. 3,
p. 350 ; Cromb. Lich. Brit. p. 79. Specimen not seen.
Hab. On walls.—Distr. Very rare in the Channel Islands (Jersey).
26. B. leucophseopsis A. L. Sm.—Thallus indeterminate,
squamulose, whitish, the squamules small, roundish, irregular,
adnate and depressed in the centre, scattered or contiguous
(K + yellow, CaCl — ). Apothecia moderate or somewhat large,
sessile, plane or subconvex, brownish-black, opaque, concolorous
within (dark-grey in the hymenial layer) ; hypothecium and
epithecium yellow- or dark-brown ; paraphyses very slender,
loosely coherent ; spores fusiform, 3-5-septate, 0,024-34 mm.
long, 0,005—8 mm. thick ; hymenial gelatine bluish, the asci a t
length wine-reddish, with iodine.—Lecidea leucophseopsis Nyl. in
Flora Ivi. p. 20 (1873) ; Cromb. in Grevillea i. p. 141 ; Leight.
Lich. PI. ed. 3, p. 364.
Crombie states th a t the thallus of this species is not uncommon
on Ben Lawers, but it is very rarely seen in fruit. I t is usually
associated with Sirosiphon saxicola.
Hab. On quartzose stones.—E, M. Ou a wall, Ben Lawers (the only
locality).
27. B. violacea Th. Fr. Lich. Scand. p. 372 (1874).—Thallus
very thin, subgranulose, greyish-white ( K - , C aC l- ) , often subevanescent.
Apothecia small, adnate, nearly plane or subconvex,
immarginate, pale-leaden-coloured ; hypothecium colourless ; paraphyses
slender, concrete ; spores oblong, 3-septate, often slightly
curved, 0,014-17 mm. long, 0,005-7 mm. thick ; hymenial
gelatine bluish, the asci a t length faintly wine-red, with iodine.
—Lecidea violacea Crouan ex Nyl. in Flora xiv. p. 464 (1862);
Carroll in Journ. Bot. iii. p. 290 (1865) ; Cromb. Lich. Brit!
p. 71 ; Leight. Lich. PL p. 335 ; ed. 3, p. 355. Specimen not
seen.
Eesembles externally a biatorine form of Lecanora syringea.
Hab. On rocks in a maritime district.—Distr. Very local and
sparingly in N. Scotland (Lerwick, Shetland Islands).
L 2