gelatine slightly bluish with iodine.—Cromb. in Crevillea v.
p. 28 ; Leight. Lich. FI. ed. 3, p. 276. Specimen not seen.
Hah. On rooks, overspreading Sirosiphon saxicola.—Distr. Extremely
local and rare, known only from a single specimen (Connemara,
Galway).
182. L. sylvicola Flot. Lich. Siles. n. 171 (1830); Nyl.
in Not. Sallsk Faun. & El. Fenn. n. ser. v. p. 185 (1866).—
Thallus effuse, thin, rimulose, wrinkled or somewhat furfuraceous,
pale-tawny-yellow or dull-greyish (K —, CaCl — ). Apothecia small,
black, convex, immarginate, sometimes becoming two or more
connate and tuberoulate ; hypothecium thick, blackish-brown or
violet-black ; paraphyses concrete, the base and towards the tips
deep-greenish-blue or sometimes brownish, the whole hymenium
bluish; spores ellipsoid, small, 0,007-10 mm. long, 0,0035-45 mm.
th ic k ; hymenial gelatine wine-red with iodine.—Cromb. Lich.
Brit. p. 69; Leight. Lich. El. p. 256; ed. 3, p. 248. L. latens
Tayl. in Mackay FI. Hib. ii. p. 259.
• Exsicc. Larb. Lich. Hb. n. 304; Lich. Caesar, n. 84.
In more exposed situations the thallus is somewhat variable in
thickness and becomes darker in colour. The spermogones are wartlike
with slender straight spermatia, 0,004-5 mm. long, about
0,001 mm. thick.
Hah. On shady rooks, granitic and schistose, in maritime and
upland situations.—Distr. Kather local and scarce in the Channel
Islands, W. England, S.E. and W. Ire la n d ; not yet seen from
Scotland.—B. M. St. Peter’s Valley, Jersey; Moulin Bay, Sark;
Coho Bay, Guernsey; near Penzance, Cornwall; Holly Bush Hill,
Malvern, Worcestershire; Barmouth, Merioneth; Battersby Bank,
Cleveland, Yorkshire; the Dargle, Wicklow ; Kylemore, Connemara,
Galway.
Var. infidula Cromb. Lich. Brit. p. 69 (1870). Very similar
to the type in external appearance, bu t w ith more pallid apothecia,
and the hypothecium pallid or almost colourless.—Leight. Lich.
FI. p. 256; ed. 3, p. 248. L. aphana Nyl. in Flora 1. p. 327
(1867); Carroll in Journ. Bot. v. p. 256 (1867); Cromb. Lich.
Brit. p. 84; Leight. Lich. PI. p. 267 ; ed. 3, p. 265. L. infidula
Nyl. in Flora li. p. 278 (1868). L . lutulata Nyl. in Flora Ivi.
p. 297 (1873); Leight. Lich. PI. ed. 3, p. 253. L. dilutiuscula
Nyl. in Flora lix. p. 308 (1876) & Lich. Env. Paris, p. 93 ; Leight.
Lich. FI. ed. 3, p. 254.
Exsicc. Larb. Lich. Hb. n. 305.
Differs from the type in the paler-coloured hypotheoium and in
the more pronounced blue colour of the hymenium. Original specimens
of L. lutulata from the type locality have the hypothecium
pale, not brownish-black as described by Nylander.
Hab. On schistose and granitic rooks in maritime and upland
districts.—Distr. Somewhat rare, though widely distributed, in the
Channel Islands, S. and N. England and Wales, not recorded from
Scotland.—B. M. Eoyal Manor Avenue and Eozel Meadow, Je rsey ;
near Shanklin, I. of W ig h t; Ditohen Cove and near Buckfastleigh,
Devon; Gart and near Dolgelly, Merioneth ; Builth, Brecknockshire ;
Battersby Bank, Cleveland, Yorkshire ; Turk Lake, Killarney, K e rry ;
Twelve Pins, Connemara, Galway ; Killree, Clare.
Var. ¡3 Hellbomii Leight. Lich. FI. ed. 3, p. 249 (1879).—
Thallus dark-greyish-brown. Apothecia globose-tuberculate, conglomerate,
and spores somewhat smaller, 0,005-7 mm. long, 0,003-4
mm. thick, otherwise as in the type.—Lecidea Hellbomii Lahm in
Flora liii. p. 177 (1870). L . aggerata Mudd Man. p. 208 (1861);
Cromb. Lich. Brit. p. 77. L. contigua var. aggerata Leight. Lich.
FI. p. 294 (1871); ed. 3, p. 301.
Exsicc. Mudd n. 175.
Differs in the form of the somewhat scattered conglomerate
apothecia, which resemble minute bramble fruit.
Hab. On rooks in maritime and mountainous districts.—Distr.
Seen only from the Channel Islands, N. Wales and N. England.
B. M. Sark; Nant Gwynant, Snowdon, Carnarvonshire; Battersby
Bank, Cleveland, Yorkshire.
183. L. aphanoides Nyl. in Flora li. p. 476 (1868).—Thallus
indeterminate, thin, subverrucose or subgrannlose-nnequal, dark-
olive-grey. Apothecia small, convex, immarginate, naked, black ;
paraphyses concrete; epithecium and hymenium dark-greenish-
blue ; hypothecium slightly reddish b e n e a th ; spores ellipsoid,
0,009-13 mm. long, 0,0045-55 mm. th ic k ; hymenial gelatine
bluish then violet-red with iodine.—Cromb. in Journ. Bot. vii.
p. 107 (1869) & Lich. Brit. p. 8 4 ; Leight. Lich. PI. p. 267;
ed. 3, p. 265.
In the single known specimen the apothecia are numerous and
approximate, though not crowded.
Hab. On a calcareous boulder in a subalpine locality.—A. M.
Near the summit of Craig Guie, Braemar, Aberdeenshire (the only
locality).
184. L. melaphana Nyl. in Flora Iii. p. 83 (1869).—Thallus
subeffuse, thin, opaque, somewhat diffract, unequal, blackish
(K - , C aC l- ) . Apothecia small, convex, immarginate, bla ck ;
paraphyses somewhat lax, slightly c lav a te ; epithecium (and the
hymenium above) bluish-green; hypothecium thickish, brown
beneath; spores oblong, 0,011-19 mm. long, 0,0045-55 mm.
th ick ; hymenial gelatine bluish then partly violet-coloured with
iodine.— Cromb. in Journ. Bot. vii. p. 107 (1869) & Lich. Brit,
p. 84; Leight. Lich. FI. p. 297; ed. 3, p. 306.
Intimately related to L. aphanoides, from which it is distinguished
by the darker colour of the hypotheoium and by the longer spores.
The single specimen, which is only sparingly fertile, was associated
with Lecanora smaragdula f. sinopica and with Lecidea contigua
yw. flavicunda, the latter of which it partially overruns.
Hab. On a granitic boulder in an upland trac t of a mountainous
district.—A. M. Craig Guie, Braemar, Aberdeenshire (the only
locality).
H Z