predominating hypothallns. Apothecia scattered, sessile on the
hypothallns, round or angular-difform, concave with a thick,
black, prominent, entire or flexuose margin, the disc of a pale-
grey colour; hypothecium blackish-brown; paraphyses thick,
brown a t the apices ; spores linear-oblong, minute, 0,007-3 mm.
long, 0,003 mm. thick. Leight. Lich. FI. ed. 3, p. 276.
Hah. On rooks.—A. M. Doughruagh Mt., Connemara, Galway (the
only locality).
66. L. tenera Nyl. in Flora Iii. p. 83 (1869).—Thallus effuse,,
thin, unequal or subgranulate, rimulose, greyish-green (K +
yellow, CaCl — ). Apothecia minute, plane, thinly margined,
pale, the margin paler, nearly whitish, a t length obliterated ;
paraphyses scanty, moderate, incrassate or clavate a t the apices;
epithecium and hypothecium colourless ; spores oblong or suh-
bacillar, simple or obsoletely 1-septate, 0,008-10 mm. long,
0.0015-25 mm. thick ; hymenial gelatine bluish with iodine.—
Cromb. in Journ. Bot. vii. p. 232 (1869) & Lich. Brit. p. 70 ;
Leight. Lich. FI. p. 259. Lecanora tenera Cromb. in Grevillea iii.
p. 82 (1874); Leight. Lich. FI. ed. 3, p. 188.
Exsicc. Cromb. n. 68 ; Larb. Lich. Hb. nos. 18, 93.
Resembles Lecanora in the pseudo-lecanoroid (egonidial) margin
of the apothecia. The thallus spreads very extensively over the
substratum, but is rarely well fertile, the apothecia being generally
much scattered. Occasionally the thalline granules are depressed and
more or less dispersed (form explanatula Nyl. fide Leight. Lioh.
FI. ed. 3, I. c.), but this is seen in otherwise typical specimens.
The spermogones are frequent, colourless, with spermatia oblong,
0-004-5 mm. long, 0,0015 mm. thick.
Hab. On shady rocks, granitic and quartzose, in maritime tracts.
—Distr. Found only in the Channel Islands, N.E. Scotland, and
N.W. Ireland.—A. M. La Moye and Boulay Bay, Jersey; near Bay of
Nigg, Kincardineshire ; Letterbeg, Connemara, Galway.
67. L. antrophila Larb. ex Leight. in Trans. Linn. Soc. ser. 2,
1. p. 242, t. xxxiii. figs. 10 & 11 (1878).—Thallus yellowish-green,
thin, effuse, pulverulent-furfuraceous ( K - , C aC l- ) . Apothecia
yellowish-red, small, scattered, sessile, excessively convex and
prominent, with only a pale narrow margin when w e tte d ;
hypothecium thick, dark yellowish-red; paraphyses indistinct,
colourless; spores linear or linear-oblong, minute, 0,009 mm.
long, 0,0025 mm. th ic k ; hymenial gelatine pale-blue with
iodine.—Leight. Lich. FI. ed. 3, p. 252.
Hab. On the interior of caves.—A. M. Mwellan near Kylemore,,
Galway (the only locality).
68. L. picila Leight. Lich. FI., ed. 3, p. 251 (1879).—
Thallus dirty yellowish-white, thin, effuse, furfuraceous. Apothecia
black, sessile, plane or hemispherical, confluent, marginate.
when wet transparent pale-brown; hypothecium b la c k ; paraphyses
thickish, coherent; spores minute oblong, 0,009 mm. long,
0,002-3 mm. thick.— Biatora picila Massal. Misc. Lich. p. 38
(1856).
Exsicc. Larb. Lich. Hb. n. 264.
The spores in the British specimens are larger th an the size given
by Massalongo, measuring up to 0,012 mm. ; in the specimens
examined from Craig Tulloch and Twelve Pins, they are mostly simple
but occasionally 1-septate.
Hab. On rocks in upland regions.—A7«Zr. Somewhat local and
rare in the Scottish Highlands and S.W. Ireland.—A. M. Craig
Tulloch, Blair Athole, Perthshire ; Derryclare and Twelve Pins,
Connemara, Galway. ’
69. L. indigula Nyl. in Flora Ix. p. 563 (1877).—Thallus
effuse, thin, continuous, rugulose, whitish, often scarcely visible
(K —, CaCl — ). Apothecia small, subprominent, plane, thinly
margined, blackish, concolorous w ith in ; paraphyses slender,
colourless a t the apices; hypothecium reddish, the upper sub-
hymenial portion thick, blackish; spores ellipsoid, 0,013-16 mm.
long, 0,006-7 mm. th ick ; hymenial gelatine pale-bluish then
wine-red with iodine.—Cromb. in Grevillea vi. p. 112; Leio-ht
Lich. FI. ed. 3, p. 307.
Related to L. sanguineoatra, but well separated from this and its
other British allies by the colour of the hypothecium above. In the
single small specimen seen, the apothecia are numerous, subminute,
at length convex and immarginate. ’
Hab. On schistose stones of a wall in a mountainous district.__
A. M. Gleneorbot, near Kylemore, Galway (the only locality).
70. L. micrococca Nyl. in Flora Ixiv. p. 7 (1881).—Thallus
effuse, thin, leprose, dark or bright green ( K - , C aC l- ) . Apothecia
very minute, innato-sessile, subglobose, immarginate, pale-
yellow testaceous; paraphyses conglutinate; epithecium and
hypothecium colourless ; spores oblong or elongate-oblong,
simple or ? 1-septate, 0,009-12 mm. long, 0,003-4 mm. th ic k ;
hymenial gelatine bluish then tawny-wine-red with iodine. ^
Cromb. in Journ. Bot. xiv. p. 361 (1876) ; Leight. Lich. FI. ed.
3, p. 257. Biatora micrococca Koerb. Par. Lich. p. 155 (1860).
Exsicc. Larb. Lich. Hb. n. 139.
Closely related to Biatorina prasina, from which it is dis-
tingu^ished chiefly by the differently coloured and more globose
apothecia and by the simple spores. The Irish specimens seen are
for the most part well fertile.
Hab On decayed stumps of holly in a mountainous district.—
D. M. Lough Inagh, Connemara, Galway (the only locality).
JU U. botryiza Nyl. ex Stirton in Grevillea ii. p. 71
(1873). Thallus effuse, thin, minutely areolate - rimulose,
greenish-white (K —, CaCl — ). Apothecia small, superficial,