if;!-: ]'I'
h ;
granules large, scattered or aggregate, convex, composed of
minute conglomerate convex roundish or sublobate subfur-
furaceous squamules (K + pale-yellow, CaCl + pale yellow).
Apothecia violet-black, rather large, innate-sessile, a t first plane
with a thickish margin, then convex and immarginate, slightly
pruinose ; hypothecium very thick, brownish-black, with a paler
brown stratum below ; paraphyses coherent, brown a t the
apices; spores elongate-cylindrical, small, 0,011-12 mm. long,
0,0045-50 mm. thick.
Hah. On stone walls in upland districts.—B. M. Moel-y-gest
near Tremadoc (the only locality).
92. L. ænea Dufour ex Fr. Lich. Europ. p. 108 (1831) ;
Nyl. in Act. Soc. Linn. Bord. ser. 3, i. p. 380.—Thallus subdeterminate,
thickish, rimulose- or verrucose-areolate, shining,
tawny or dusky-brown, the areolæ plane or convex (Kf+yellowish,
CaCl — , medulla I — ) ; hypotballus black. Apothecia moderate
or somewhat large, adnate, a t first plane and thinly margined,
a t length convex and immarginate, brownish-black or black,
whitish within ; paraphyses concrete, somewhat fuliginous a t
the apices ; hypothecium colourless ; spores oblong-ellipsoid,
0,015-18 mm. long, 0,005-7 mm. thick ; hymenial gelatine
bluish then sordid with iodine.—Cromb. in Journ. Bot. xi. p. 135
(1873) ; Leight. Lich. El. ed. 3, p. 297.
Might be taken, at first sight, for a variety of Lecanora badda, as
it was regarded by Schærer (vide Enum. p. 68). The apothecia in a
young state look somewhat lecanoroid ; in the British specimens they
are numerous, at times somewhat crowded and then angulose. The
spermogones, not visible in these, are (fide Th. Fries. Lich. Scand.
p. 457), long, acicular and arcuate.
Hab. On a mioa-sohist boulder in a mountainous region.—A. M,
Morrone, Braemar, Aberdeenshire (the only locality).
93. L. cyclisca Malbr. in Bull. Soc. Sci. Nat. Kouen xvii.
p. 131 (1881).—Thallus thick, cartilaginous, subdeterminate
unequal, glaucous - cinereous - white, furfuraceous. Apothecia
minute, blackish-brown, irregularly grouped in small circles,
plane, immarginate, reddish when moistened, and then somewhat '
swollen and convex ; hypothecium colourless ; paraphyses
indistinct, reddish-brown a t the apices ; spores ellipsoid-oblong,
with a thick epispore, ra th e r large, 0,016-18 mm. long,
0,009-10 mm. thick.—Biatora cyclisca Massal. Svm. Lich. p. 40
(1855).
Very distinctive on account of the soft thick uneven thallus,
which becomes pitted after the disappearance of the apothecia. The
single specimen in the British Museum is well fertile.
Hab. On limestone.—A. M. Bathampton Downs, Wiltshire.
94. L. nigroglomerata Leight. Lich. El. p. 252 (1871).—
Thallus effuse, subareolate, minutely squamulose, the squamules
smooth and shining, crenulate, glaucous-white, very small, and
crowded round the groups of apothecia (K + yellow, CaCl +
yellow), hypothallns black, little visible. Apothecia black, large,
crowded and deformed, shining, plane or convex, with a thickish
slightly paler margin ; hypothecium colourless, lateral walls thin,
dusky-blackish, often continuous under the hypothecium as a
thin dusky line; paraphyses coherent, greenish-black a t the
apices; spores ellipsoid, 0,011-15 mm. long, 0,006-8 mm. thick ;
hymenial gelatine bluish then sordid-yellow with iodine.—
Cromb. in Journ. Bot. ix. p. 179 (1871). Lecanora nigroglomerata
Leight. Lich. FI. ed. 3, p. 179 (1879).
Exsicc. Cromb. n. 64.
Externally this species has a general resemblance to L. auriculata
var. diducens, but is sufficiently distinguished by the squamulose
dispersed thallus, the colourless hypothecium, and the apothecia
internally colourless.
Hah. On quartzose stones in bare alpine places.—A. M. Summit
of Cairn Gowar, Ben-y-gloe, Blair Athole, Perthshire (the only
locality).
95. L. scotinodes Nyl. in Flora Ivi. p. 295 (1873).—Thallus
subdeterminate, thinnish, unequal, areolate-rimose, dark-greyish.
Apothecia small, convex, immarginate, black, hypothecium
colourless ; paraphyses moderate, dark-blue a t the incrassate
apices ; epithecium K + pale-violet ; spores oblong, simple or
occasionally 1-septate, 0,014—18 mm. long, 0,005-6 mm. thick ;
hymenial gelatine bluish then tawny-wine-coloured or reddish
with iodine.—Cromb. in Grevillea ii. p. 90 ; Leight. Lich. El.
ed. 3, p. 332.
Allied to L. scotdna, a plant of Bavaria, but differs in the esqua-
mulose thallus, the convex apothecia, the larger spores and other
characters given. The numerous apothecia are occasionally somewhat
crowded.
Hab. On schistose rocks in subalpine tracts.—A. M. Craig
Tulloch, Blair Athole, Perthshire (the only locality).
_ 96. L. aggregatula Nyl. in Flora Ixvi. p. 101 (1883).—Thallus
thickish, indeterminate, minutely granulate, the granules aggregate,
grouped in areolæ, whitish or greyish-white (K — ,
CaCl — ). Apothecia small, adnate, plane, subrugulose and a t
times more or less congregate, opaque, blackish or brownish-
black, immarginate or subimmarginate, pale within ; epithecium
brown ; paraphyses slender, somewhat clavate and brown a t the
apices; hypothecium colourless; spores oblong. 0,011-15 mm.
long, 0,005-6 mm. thick ; hymenial gelatine bluish then tawny-
wine-coloured with iodine.—Cromb. in Grevillea xii. p. 90.
Exsicc. Larb. Lich. Hb. n. 338.
Allied to the preceding, but readily distinguished by the aggregate
thallus, which is often overrun by a sterile Sirosiphon. The sper