sér. 3, xvii. p, 113 (1852); Lindsay in Journ. Micr. Sci. v.
p. 34, t. 4, figs. 1-14 (1857) ; Mudd Man. p. 224, t. 4, f. 86. Lichen
parasiticus Sm. Engl. Bot. t. 1866 (1808).
Brit. Exs. Leight. nos. 191, 309, 310; Mudd n. 201.
Included by some authors among the fungi owing to the absence
of a proper thallus ; it usually deforms the lobes of the host, e.g.
Parmelia saxatilis and P. omphalodcs, whence these were supposed
by Sommerfelt to be its proper thallus. The erumpent apothecia are
at length subglobose. Intermixed with these, immersed pycnidia are
of common occurrence on the alien thallus.
Hah. On the thalli of various foliaceous lichens—Parmelia
saxatilis and var. furfuracea, P. omphalodes, P. tiliaoea, P. exaspérala,
Stictina fuliginosa, Platysma glaucum, etc., in maritime,
upland and subalpine districts.—PZsZr. General and not uncommon
in Great Britain, apparently rarer in Ireland, rare in the Channel
Islands. —P. M. Jerbourg, Island of Guernsey; Withiel, Cornwall;
Torquay, Hay Tor and near the Bottor Eock, Dartmoor, S. Devon ;
Bridge, Sussex ; Essex ; North Hill, Malvern, Worcestershire ; Charnwood
Forest, Leicestershire; Llyn Geironydd, Abergavenny, Monmouthshire
; Aran Mawddwy, Cader Idris and Dolgelly, Merioneth ;
Ingleby Park, Cleveland, Yorkshire ; High Force, Teesdale, Durham ;
Barcaldine and Inverary, Argyll ; Glen Lochay, Killin, Craigie Hill,
Perth, Craig-y-Barns, Dunkeld and Glen Shee, Perthshire ; Canlochan,
Forfarshire; Durris, Kincardineshire; Countesswells, near Aberdeen ;
Glen Callater, Braemar, Aberdeenshire ; Glen Nevis, Invernessshire ;
Blarney, Cork ; Mangerton, Killarnejq Kerry ; near Dawros, Connemara,
Galway.
38. B. particularis A. L. Sm.—Thallus absent. Apothecia
small, plane, margined, black ; paraphyses slender, not very well
discrete ; hymenium in thin section yellowish (K + somewhat
purplish) ; hypothecium and perithecium blackish ; spores ellipsoid,
brownish-black, 0,008-0,010 mm. long, 0,0035-45 mm. thick ;
hymenial gelatine deep-blue with iodine.—Lecidea particularis
Nyl. in Flora Ix. p. 461 (1877); Cromb. in Grevillea vi. p. 113 ;
Leight. Lich. El. ed. 3, p. 386.
Exsicc. Larb. Lich. Hb. without number.
Well characterized by the structure of the apothecia and by the
host upon which it ooours. The single specimen seen is fragmentary
and only sparingly fertile.
Hab. On the thallus of Boeomyces rufus (saxicolous).—B. M.
Near Kylemore, Connemara, Galway.
39. B. advenula A. L. Sm.—Thallus absent. Apothecia
parasitic, minute, plane or slightly convex, rugulose, submarginate,
blackish ; paraphyses concrete ; epithecium purplish-
black ; hypothecium brownish-black (K + yellowish) ; spores 4
in the ascus, obtusely ellipsoid, blackish, 0,019-0,023 mm. long,
0,0014-16 mm. th ic k ; hymenial gelatine deep-blue with iodine!
—Lecidea advenula Leight. in Trans. Linn. Soc. ser. 2, i. p. 146,
t. 22, figs. 17—20 (1876) & Lich. FI. ed. 3, p. 388 ; Cromb. in
Journ. Bot. Iviii. p. 141 (1875).
Exsicc. Larb. Lich. Hb. n. 38.
Allied to Lecidea epispila Nyl. (Lich. Pyr. Or. p. 66), which occurs
on the same Pertusaria in E. Pyrenees, differing, however, in being
athalline and smaller, in the darker epithecium and hjrpothecium, as
also in the number of the rather thicker spores. The apothecia are
usually somewhat scattered.
Hdb. On the thallus of Pertusaria Wulfenii var. rupicola in
mountainous districts. Distr. Only a few localities in N. Wales, the
S. Grampians, Scotland and W. Ireland.—P. M. Llanbedrog, near
Pwllheli, Merioneth ; The Trossachs, Perthshire ; Achosragan Hill,
Appin, Argyll ; near Kylemore and Lettermore, Connemara.
77. LECIOGRAPHA Massai. Gen. Lich. p. 14 (1854). Dacty-
pora Koerb. Syst. Lich. Germ. p. 271 (1855); Mudd Man.
p . '223. (PI. 14.)'
Thallus none. Apothecia parasitic on the thallus of other
lichens, immersed then superficial, discoid black and carbonaceous
; hypothecium dark-coloured ; spores 8 in the ascus,
ohlong-ellipsoid or oblong-fusiform, 3-septate, brown.
1. L. parasitica Massai. I. c. & Symm. Lich. p. 66 (1855).__
Apothecia small, sessile, a t first somewhat concave, then plane,
margined, black, the margin thin, entire, prominent, slightly
shining; hypothecium dark-reddish-brown ; paraphyses conglutinate,
thicker and reddish-brown a t the tips ; spores oblong-
cylindrical, 3-septate, brown, 0,009-15 mm. long, 0,0035-45 mm.
thick ; hymenial gelatine deep-blue with iodine.—Lecidea parasitica
Floerke Deutsch. Lich. 6, p. 3 (1819); Cromb. Lich. Brit. p. 94;
Leight. Lich. PI. p. 357 ; ed. 3, p. 387. L. inspersa Tul. in Ann.
Sci. Nat. sér. 3, xvii. p. 118 (1852). L . Zwaclchii Cromb. in
Journ. Bot. xiv. p. 362 (1876)? Dactylospora inspersa Mudd
Man. p. 224, t. 4, f i g . 85 (1861).
Lxsicc. Leight. n. 183 ; Larb. Lich. Cæsar. n. 86.
When corticolous not to be confounded with Trachylia stigonella,
to which it bears considerable resemblance in its habit and external
appearance, but from which it is separated by the spores. The
apothecia are either scattered or often aggregate.
Hdb. On the thallus of Lecanora parella and Pertusaria communis
in maritime and upland situations.—Distr. General and not uncommon
in England; apparently rare in the Channel Islands, Wales and
S. Ireland; not seen from Scotland.—P. M. La Moye, Island of
Jersey; F.airlight, Hastings, Sussex; near Lyndhurst, New Forest,
Hants ; Totnes, Lydford, and near Newton Bushell, Devon ; Tilgate,
Sussex ; Chedworth Woods, Gloucestershire ; near Twycross, Leicestershire
; Hale End and near the Eagged Stone, Malvern, Worcestershire
; Harboro’ Magna, Warwickshire ; Barmouth and near Nannau,
Dolgelly, Merioneth ; Aber, Carnarvonshire ; Cliffrigg, Cleveland,
Yorkshire ; Brown’s Demesne, Eiverstown, Cork ; Muckross, Killarney,
Kerry.