Falloch and Black Wood of Eannoch, Perthshire; Countesswells
Wood, near Aberdeen; Mar Forest, Braemar, Aberdeenshhe ; Eothie-
inurohus Woods, Invernessshire.
Var. ¡3 endopella Cromb. in Grevillea i. p. 172 (1873).—
Thallus subevanescent. Apothecia naked, black, pale-brownish
within ; spores often 2-nucleolate ; hymenial gelatine persistently
bright blue with iodine.—Leight. Lich. FI. ed. 3, p. 261. L.
endopella Cromb. in Journ. Bot. ix. p. 178 (1871); Leight. Lich.
FI. p. 301.
Exsicc. Cromb. n. 84.
Differs, though perhaps only as a form, in the constantly naked
apothecia, and more especially in the colour of the hymenial reaction.
The apothecia are numerous and somewhat crowded.
Hai. On an old fir paling in an upland locality.—B. M. Glen
Fender, Blair Athole, Perthshire (the only locality).
Var. y pithyophila Nyl. Lich. Scand. p. 202 (1861).—Thallus
as in the type, bu t usually in patches. Apothecia naked, convex,
rugulose, sordid-bluish with in ; hymenial gelatine bluish then
sordid-violet with iodine.—Cromb. in Grevillea I. c. & in Journ.
Bot. xi. p. 134 (1873); Leight. Lich. FI. I. c. L. asserculorum
var. ^pithyophila Sommerf. Suppl. FI. Lapp. p. 154 (1826).
Characterized chiefly by the peculiar colour of the hymenium,
which, as observed by Nylander, 1. c., is almost as in L. meoelna.
The apothecia are subminute and crowded.
Hab. On old fir palings in upland tracts.—Distr. Local and scarce
among the S. and Central Grampians, Scotland.—B. M. Achmore,
Killin, and Glen Fender, Blair Athole, Perthshire.
54. L. moestula Nyl. in Flora li. p. 344 (1868).—Thallus
effuse, thin, flat, subgranulose, dark-greyish (K —, CaCl — ), at
times nearly evanescent. Apothecia subminute, plane or convex,
immarginate or with obsolete margin, black, colourless within;
hypothecium entirely dark-brown; epithecium colourless or sometimes
dark-coloured ; spores ellipsoid, small, 0,007-8 mm. long,
0,025-35 mm. thick ; hymenial gelatine pale-bluish then wine-
red with iodine.—Cromb, in Journ. Bot. vii. p. 48 (1869), Lioh.
Brit. p. 69 & in Journ. Linn. Soc. xi. p. 483 (1 8H ); Leight.
Lich. FI. p. 269 ; ed. 3, p. 268.
Exsicc. Cromb. n. 85.
Approaches L. turgidula. The apothecia are numerous and
generally crowded. The spermogones also are frequent, especially in
subathalline specimens ; they are black, punotiform, somewhat
prominent, w ith short sterigmata and oblong spermatia, 0,0040-45 mm.
long, 0,0015 mm. thick.
Hab. On old oak palings in wooded upland situations.—Distr. Very
local in S. and W. England, but plentiful where it occurs.—B. M.
Billingshurst, Sussex ; near Lyndhurst, New Forest, Hants.
55. L. submcestula Nyl. in Flora lix. p. 235 (1876).—Thallus
effuse, minutely subverrucose-granulose or subdispersed, greyish
(K —, CaCl — ). Apothecia small, convex, immarginate, black,
concolorous within ; hypothecium thick, brown ; epithecium
dark-greenish; spores ellipsoid, small, 0,006-10 mm. long,
0,0035 mm. thick ; hymenial gelatine bluish then tawny-wine-
coloured with iodine.—Cromb. in Grevillea v. p. 26 ; Leight.
Lich. FI. ed. 3, p. 268.
Near the preceding, but differing, among other characters, in the
more developed thallus, the darker epithecium, and the nature of the
habitat. I t is usually more or less overrun by young states of
Sirosiphon saxicola. The apothecia are often 2- or several-connate.
Hab. On dry arenaceous rooks in a maritime district.—B. M.
Near Westport, Connemara, Galway (the only locality).
56. L. misella Nyl. in Not. Sallsk. Faun, à FI. Fenn. n.
ser. V. p. 177 (1866).— Thallus effuse, thin, minutely granulose-
unequal, yellowish-green, a t times subevanescent. Apothecia
subminute, subinnate-sessile, convex, immarginate, brownish or
brownish-black, pale violet-black within ; epithecium and hypothecium
subiucolorous ; spores ellipsoid or oblong-ellipsoid, minute,
0,007-9 mm. long, 0,0030-35 mm. th ick ; hymenial gelatine
bluish then wine-red with iodine.—Cromb. in Grevillea i. p.
172 ; Leight. Lich. FI. ed. 3, p. 265. L. anomala var. misella
Nyl. Lich. Scand. p. 202 (1861). L. melanochroza Leight. ex
Cromb. in Journ. Bot. ix. p. 178 (1871) & Lich. FI. p. 267.
Exsicc. Cromb. n. 174.
Resembles a small state of L. turgidula, but differs in the colour
of the often subfurfuraoeous thallus, in the smaller spores and other
analytical characters of the apothecia. These are numerous, occasionally
somewhat crowded and at length globose. Elsewhere the
plant is known only from Scandinavia and Finland.
Hab. On an old fir paling in a mountainous region.—B. M. Near
Loch Tummel, Perthshire (the only locality).
57. L. paucula Nyl. in Flora lix. p. 573 (1876).—Thallus
effuse, very thin, smooth, continuous, greenish or greyish-white
CaCl — ). Apothecia minute, convex, immarginate, livid-
brown within, brown under the hymenium ; paraphyses colourless
a t the apices; hypothecium thick, brownish-black; spores
ellipsoid, 0,006—7 mm. long, about 0,003 mm. thick ; hymenial
gelatine tawny-wine-coloured with iodine.—Cromb. in Grevillea
V . p . 106 ; Leight. Lich. FI. ed. 3, p. 249.
Exsicc. Larb. Lich. Hb. n. 223.
Near L. botryoides Nyl., of Finland. The two specimens seen are
well fertile, the apothecia not being very black as stated by Leighton.
Hab. On schistose rooks in streams in mountainous districts.—
Distr. Pound only in N.W. Ireland.—D. M. Near Kylemore and
Twelve Pins, Connemara, Galway.
58. L. mutabilis Fée Ess. Crypt, ii. p. 105 (1837).—Thallus
thin, membranaceous, smooth, whitish often limited by a narrow