bluish-black line. Apothecia small, scattered, reddish-brown,
sessile, plane with a th in entire margin; paraphyses slender,
concrete; hypothecium colourless or yellowish; spores ellipsoid
or ovate, rather large, 0,014-16 mm. long, 0,008-14 mm. th ick ;
hymenial gelatine blue with iodine.—Carroll in Nat. Hist. Rev.
vi. p. 526, t. xxix. figs. 2, 3 (1859); Cromb. Lich. Brit. p. 64;,
Leight. Lich. El. p. 298; ed. 3, p. 307.
Distinguished from others in this group by the smooth, subdeterminate
thallus, and by the spores which are thiok-walled and very
distinct.
Hah. On the bark of trees.—Distr. Seen from only a few localities
in S. England and Ireland.—B. M. Tregawn, Cornwall; Hustyn’s
Wood and Torquay, Devon; Castle Bernard Park, Cork ; Mangerton,
Killarney and Blaokwater Bridge, Kerry ; Mount Shannon, Limerick;
Killaloe, Clare.
59. L. hreadalbanensis Stirton in Trans. Glasgow Soc. Nat.
1875, p. 87.—Thallus black or brownish-black, thin, somewhat
wrinkled. Apothecia black or brownish-black, small, convex,,
rugose, immarginate, often conglomerate ; hypothecium pale or
reddish in th in section; paraphyses indistinct, conglutinate,
reddish-brown a t the apices; spores 4-8 in the ascus, ellipsoid,
with a double epispore 0,016-22, rarely -2 5 mm. long, 0,011-14
mm. thick ; hymenial gelatine deep-blue with iodine.—Leight.
Lich. FI. ed. 3, p. 298. Specimen not seen.
Hah. Cn mosses and hepatios. Collected by Dr. Stirton on Ben
Lawers.
60. L. poliodes Nyl. in Flora Iviii. p. 10 (1875).—Thallus
blackish-grey or greenish-grey, thin, opaque, wrinkled, becoming
rimóse. Apothecia minute, blackish, convex, immarginate;
hypothecium dark-reddish; paraphyses concrete; epithecium
colourless; spores ellipsoid, small, 0,007-9 mm. long, 0,0025-
45 mm. thick ; hymenial gelatine wine-red with iodine.
Exsicc. Larb. Lich. Hb. n. 227.
Hab. Cn rooks in shady streams.—B. M. Above Lough Feagh,
Connemara, Kerry (the only locality).
61. L. rufofusca Nyl. in Flora Iii. p. 409 (1869).—Thallus
effuse, whitish-yellow or brownish, thickish, forming a granulose
crust with a whitish hypotballus. Apothecia small, dark-reddish-
hrown, plane and marginate, becoming convex and immarginate;
hypothecium yellow ; paraphyses concrete ; epithecium yellowish-
brown ; spores ellipsoid-oblong, 0,0095-150 mm. long, 0,0055-
65 mm. thick ; hymenial gelatine wine-red with iodine.—Leight.
Lich. Flora ed. 3, p. 266. Biatora rufofusca Anzi Catal. Lich.
Sondr. p. 76 (1860).
Exsicc. Larb. Lich. Hb. n. 102.
Hab. Cn the barks of trees.—B. M. Near Kylemore, Connemara
and Ballynahinoh, Galway (the only localities).
62. L. Henrica Larb. ex Nyl. in Flora Ix. p. 563 (1877).—
Thallus white, tartareous, thiokish, continuous, smooth, slightly
rimulose (K + yellow, CaCl + yellow). Apothecia pale yellow-
flesh-coloured, scattered, sessile plane or convex, with an obtuse
margin or subimmarginate ; hypothecium colourless ; paraphyses
distinct, thick, colourless a t the apices ; spores 4, 6 or 8 in the
ascus, ellipsoid or fusiform-ellipsoid, 0,015-20 mm. long, 0,006-
7 mm. thick ; hymenial gelatine blue th en yellow, the asci
violet-yellow, with iodine.—Cromb. in Grevillea vi. p. I l l ;
Leight. Lich. FI. ed. 3, p. 298.
Exsicc. Larb. Lich. Hb. n. 171.
Hah. On rooks in shady localities.—B. M. Ravine near Kylemore,
Galway (the only locality).
63. L. rusticula Nyl. in Flora xlix. p. 371 (1866).—^Thallus
effuse, granulate, the granules depressed-convex, subcrenate,
smooth, glancous-white (K + yellowish, K (CaCl) + yellow).
Apothecia minute, somewhat plane, margined, black, the margin
entire a t length obliterated ; paraphyses concrete ; epithecium
vaguely brownish ; hypothecium brown; spores ellipsoid, 0,010-
15 mm. long, 0,005-8 mm. thick ; hymenial gelatine deep-blue
then sordid-yellowish with iodine.—Leight. in Ann. Mag. Nat.
Hist. XX. p. 407 (1867) ; Cromb. Lich. Brit. p. 84 ; Leight. Lich
FI. p. 271 ; ed. 3, p. 272.
Related to L. expansa, but, among other differences, separated by
the character of the thallus and the larger spores. The apothecia, at
first concave with the margin obtuse, are but few and scattered in the
small specimen seen. The spermogones have not been detected.
Hab. On quartzose rooks in mountainous districts.—Distr. Found
only very sparingly in N. Wales and N.W. Ireland (Salrook Road,
Connemara, Galway fide Leight. Lioh. PI. ed. 3 I. a.).—B. M. Giant’s
Pebbles, Cader Idris, Merioneth.
64. L. rusticella Nyl. in Flora Ixi. p. 245 (1878).—Thallus
effuse, thin, subleprose, whitish-ochraceous (K +red d ish , C aC l- ) .
Apothecia minute, convex, immarginate, black, opaque, dark
within ; paraphyses concrete ; epithecium and hypothecium brown
or brownish; spores suboblong, 0,006-9 mm. long, 0,0025-35 mm.
thick ; hymenial gelatine bluish then tawny-wine-red with iodine
—Cromb. in Grevillea vii. p. 97 ; Leight. Lioh. FI. ed. 3, p. 252.’
Comparable with L. rustictda, but distinct in the character of the
thallus and in the smaller spores. The colour of the thallus, which
N^dander I. c., says may be normally greyish, is evidently due to
sufl^ion by peroxide of iron. The apothecia are rather scattered.
Hab. On schistose stones of a wall in an upland situation.—A M
Tullywhee Bridge, Connemara, Galway (the only locality).
65. L. livescens Leight. in Grevillea iv. p. 78 (1875).__
Thallus white, granulose or granulate-verrucose (K —, CaCl +
pale-reddish), the granules scattered and dispersed on a black