either crowded and variously angulose or th in granulose and scattered,
while at times it is subevanescent. The single B ritish specimen
is well fertile, though the thallus is for the most part but little
developed. The spermogones are large, black, subglobose and variously
corrugate, with spermatia shortly cylindrical, about 0,003 mm.
long.H
db. On the stump of an old fir tree in a wooded mountainous
region.—B. M. Balloohbuie Forest, Braemar, Aberdeenshire.
190. L. pycnocarpa Koerb. Parerg. Lich. p. 213 (1861).—
Thallus warted or warted-areolate whitish or dark-ashy-grey ;
hypotballus indistinct (K + yellow, CaCl — ). Apothecia minute,
black, somewhat convex, immarginate, conglomerate in dense
orbicular groups; hypothecium dark-brown; paraphyses coherent,
dark-brown towards the apices; spores linear-oblong 0,012-17 mm.
long, 0,003-6 mm. thick ; hymenial gelatine and asci blue then
wine-red with iodine.—L. symphorella Nyl. in Flora Ixiii. p. 35
(1870) ; Cromb. in Journ. Bot. viii. p. 98 (1870) ; Leight. Lich.
FI. p. 301 ; ed. 3, p. 286. L. ampliotera Leight. ex Cromb. in
Journ. Bot. ix. p. 179 (1871) & Lich. FL p. 183; ed. 3, p. 287.
Hab. On granitic and sandstone rocks.—Distr. Eare in mountainous
places, N. Scotland.—A. M. Ben Lawers, Craig Tulloch,
Ben-y-Gloe, Blair Athole, Perthshire ; Morrone, Braemar and Hill of
Ardo, Aberdeenshire.
191. L. assimilis Th. Fr. Lich. Scand. p. 556 (1874).—Thallus
ra th e r thin, areolate-warted or conglomerate, brownish-fawn-
coloured or sordid (K —, CaCl — ). Apothecia minute, sessile or
adnate, a t first concave with a prominent margin, becoming plane
or slightly convex ; hypothecium colourless ; paraphyses slender,
involved in gelatine, towards the tips a clear greenish-blue colour ;
spores ellipsoid, with a thin epispore, 0,011-13 mm. long,
0,005-7 mm. thick ; hymenial gelatine deep blue with iodine.
In our specimens the spores are somewhat smaller than the size
given by Th. Fries, measuring from 0,008 x 4 mm. upwards. The
beautiful blue colour of the epithecium is very marked.
Hab. On rocks. —A. M. Ben Lawers, Perthshire.
192. L. commaculans Nyl. in Flora li. p. 476 (1868).—
Thallus effuse, thin, opaque, subareolate, the areolse scattered,
depressed, greyish- or brownish-black (K —, CaCl — ). Apothecia
submoderate, slightly convex, scarcely margined, black, concolorous
within ; paraphyses concrete ; epithecium blackish ;
hypothecium thickish, reddish-brown, the colour passing into the
hymenium ; spores oblong, 0,008-11 mm. long, 0,003-4 mm. thick ;
hymenial gelatine bluish with iodine.—Cromb. in Journ. Bot.
vii. p. 106 (1869) & Lich. Brit. p. 93 ; Leight. Lich. PI. p. 282 ;
ed. 3, p. 287.
Approaches L. kajanita Nyl., a Scandinavian plant, but differs in
the form of the spores and especially in the colour of the hypothecium.
From L. expansa Nyl. it is similarly separated by the hypotheoium
and also by the larger immarginate apothecia; these, like the thallus
itself, are rather scattered. The spermogones, here and there visible,
have the spermatia cylindrical, straight, 0,009-0,011 mm. long,
0,001 mm. thick.
Hab. On a felspathic boulder and quartzose stones in an alpine
situation.—A. M. Summit of Morrone, Braemar, Aberdeenshire (the
only locality).
193. L. nitescens Leight. in Crevillea iv. p. 79 (1875).—
Thallus white, thin, continuous, minutely and irregularly rimulose,
effuse, indeterminate (K + yellow, CaCl + yellow) often overspread
more or less with a dark-brown alga. Apothecia
numerous, small, somewhat convex, shining, immarginate; hypothecium
thick, b la c k ; paraphyses distinct, bu t conglutinate,
apices pale; spores oblong or linear-oblong, 0,017 mm. long,
0,0055 mm. th ic k .-L e ig h t. Lich. FI. ed. 3, p. 306. Specimen
not seen.
Hab. On rocks. Collected by L arbalestier a t Salrock Eoad, Connemara,
Galway.
194. L. restricta Stirton in Trans. Glasgow Soc. Nat. 1875,
p. 88.—Thallus blackish-grey, wrinkled, thin. Apothecia black,
adnate, small, plane, obtusely margined ; hypothecium colourless ;
paraphyses distinct, filiform, thick, the epithecium brownish;
asci saccate; spores ellipsoid, 0,013-17 mm. long, 0,008-10 mm.
thick ; hymenial gelatine blue th en yellow with iodine.—Leight.
Lich. FI. ed. 3, p. 298. Specimen not seen.
Hab. On rooks.
Perthshire.
Collected by Dr. Stirton at Blair Athole,
195. L. mucosa Stirton in Scott. Nat. 1879, p. 17.—Thallus
fulvous, gelatinous or evanescent. Apothecia fuscous or fuscous-
black, somewhat plane, convex or almost spherical, sm a ll;
hypothecium fuscous ; paraphyses conglutinate, indistinct, apices
colourless, not clavate; spores ellipsoid, 0,007—10 mm. long,
0,004-5 mm. th i c k ; hymenial gelatine blue then dirty with
iodine.—Leight. Lich. FI. ed. 3, p. 545. Specimen not seen.
Hab. Cn decayed wood. Collected by Dr. Stirton near Ben Doran,
Argyll.
196. L. oxyspora Nyl. in Act. Soc. Linn. Bord. ser. 3, i
p. 391 (1856.)—Apothecia minute, plane or slightly convex
black or brownish-black, immarginate, dark w ith in ; hypothecium
brownish ; paraphyses concrete ; spores ellipsoid-fusiform, 0,014—20
mm. long, 0,005-7 mm. th ic k ; hymenial gelatine, especially th e
asci, bluish with iodine.—Cromb. Lich. Brit. p. 92 ; Leight.
Lich. FI. p. 357 ; ed. 3, p. 384. Abrothallus oxysporus Tub in