and the apothecia regular. From its allies it may be recognized
by the wrinkled (gyrophoroid) character of most of the apothecia.
The not unfrequent spermogones have the spermatia shortly acicular,
straight, 0,007-9 mm. long, about 0,001 mm. thick.
Hah. On schistose rocks and boulders in mountainous districts.—
Distr. Only sparingly in N. Wales and on the Central Grampians,
Scotland.—B. M. Ben Lawers and Ben Vrackie, Perthshire.
162. L. atrofuscescens Nyl. in Flora xlix. p. 371 (1866).—
Thallus indeterminate, flattened, areolate-diffract, subopaque,
greyish- or brownish-black ( K - , C aC l- , medulla I + bluish);
hypotballus black, only here and there visible. Apothecia
adnate, plane, a t length slightly convex, thinly margined, often
subangulose, black ; paraphyses slender, soft, somewhat irregular ;
epithecium brownish; hypothecium colourless or brownish;
spores ellipsoid, 0,018-20 mm. long, 0,009—11 mm. th ic k ; hymenial
gelatine bluish then partly wine-red with iodine.—Cromb.
Lich. Brit. p. 83 ; Leight. Lich. FI. p. 286 ; ed. 3, p. 292.
Intermediate between B. fuscoatra and D. griseoatra, but readily
distinguished from these and the allied species by the larger spores.
The thallus generally spreads somewhat extensively over the substratum,
though a t times interruptedly when associated with other
lichens. In our specimens the apothecia are numerous, crowded but
distinct, and usually angulose. The spermogones, here and there
visible, have the spermatia baoillar, 0,007-9 min. long, 0,001 mm
thick (fide Nyl. in Flora Ixx. p. 134 (1887)).
Hab. On rocks and boulders, schistose and greenstone, in upland
situations.—Distr. Seen only from two localities in Scotland.—B. M.
King’s Park, Stirling-; Ben Lawers, Perthshire.
163. L. relicta Stirton in Trans. Glasgow Soc. Nat. 1873,
p. 89.—Thallus greyish-black, wrinkled, almost granular. Apothecia,
black, small, adnate, plane, obtusely marginate becoming
convex, immarginate and rugose ; hypothecium brownish-black ;
paraphyses few, slender, distinct, the apices clavate, b row n ;
spores oblong, 0,009-13 mm. long, 0,005-6 mm. thick ; hymenial
gelatine bluish then wine-red with iodine.—Leight. Lich. FI.
ed. 3, p. 277. Specimen not seen.
Hdb. On rocks. Collected by Dr. Stirton a t Blair Athole, Perthshire.
164. L. Uliginascens Stirton in Scott. Nat. iv. p. 164 (1877).
—Thallus brownish-black, minutely granular, effuse. Apothecia
black, plane or subconvex (internally K + v io le t); hypothecium
brownish-black; paraphyses few, irregular, slen d e r; spores
oblong, 0,010-13 mm. long, 0,006-7 mm. th ic k ; hymenial gelatine
pale-blue then dark-wine-red with iodine.—Leight. Lich.
FI. ed. 3, p. 278. Specimen not seen.
Hab. On turfy earth. Collected by Dr. Stirton near Garve, Eossshire.
165. L. mullensis Stirton in Scott. Nat. iv. p. 166 (1877).—
Thallus dark or blackish-grey, areolate-warted, cracked, formed
of erect columellse, either connate or dispersed (K + yellow,
medulla + yellow th en ferruginous-red). Apothecia black, subinnate,
small, plane, acutely margined, the margin often flexuose
or undulate ; hypothecium thickish, brown or brownish-black;
paraphyses irregular, indistinct, black a t the apices; spores
ellipsoid, 0,006-9 mm. long, 0,004-6 mm. th ic k ; hymenial gelatine
bluish then wine-red with iodine.—Leight. Lich. FL ed. 3,
p. 288. Specimen not seen.
Hah. On rooks. Collected by Dr. Stirton on rocks in Island of
Mull.
166. L. orphnteilla Stirton in Scott. Nat. iv. p. 166 (1877).—
Thallus black, opaque, minutely granular-furfuraceous, continuous.
Apothecia black, sessile, plane or somewhat convex,
with a shining, irregularly lobate margin ; hypothecium colourless
; paraphyses ra th e r stout, generally conglutinate; the epithecium
thick and black; spores oblong or fusiform-oblong,
0,013-18 mm. long, 0,003-4 mm. th ic k ; hymenial gelatine in tensely
blue with iodine. — Leight. Lich. FI. ed. 3, p. 254.
Specimen not seen.
Hab. On rooks. Collected by Dr. Stirton in Island of Mull.
167. L. phyllodisca Stirton in Trans. Glasgow Soc. Nat.
1875, p. 86.—Thallus black, thin, scurfy or scarcely visible.
Apothecia black, often 2-3 aggregate or conglomerate and then
undulate, the margin thin, flexuose, shining dark-grey or dark-
bluish-grey within (K + purpurescent or ro sy ); hypothecium
blackish or darkly zo n a te ; paraphyses distinct, clavate, and
black or bluish-black a t the apices; spores ellipsoid, 0,007-9 mm.
long, 0,0045-55 mm. thick ; hymenial gelatine slightly blue then
wine-yellow or violet with iodine.—Leight. Lich. FL ed. 3, p. 353.
Specimen not seen.
Hab. On rooks, rare. Collected by Dr. Stirton near Killiecrankie,
Perthshire.
168. L. callista Stirton in Grevillea iii. p. 34 (1874).—Thallus
dark-brownish-black, granular, the granules dispersed or conglomerate.
Apothecia black, small, bluish-grey pruinose, sessile,
crowded, often contiguous, the margin prominent, inflexed ; hypothecium
brownish-black, th i n ; paraphyses rather indistinct,
thickish, clavate, and brown a t the apices; spores ellipsoid or
cylindrical, small, 0,012-14 mm. long, 0,003 mm. thick hymenial
gelatine intensely blue almost black with iodine.—Leight.
Lich. FI. ed. 3, p. 276. Specimen not seen.
Hah. On rooks. Collected hy Dr. Stirton near Grantown, Invernessshire.