Barmouth, Alerioneth.shire; Trefriw Falla, Carnarvonshire; Teesdale,
Durham. Appin and Glencoe, Argyleshire ; Glen Falloch aud Ben Lawers,
Perthshire; Glen Callater, Braemar, Aberdeenshire. Ballaghbeama Gap
and Dunkerron, co. Kerry ; Connor Cliffs, Dingle, oo. K e rry ; Ballynakill
and Lough Inagh, Coimemara, co. Galway.
177. L. flav id a Hepp, Exs. (1860) ii. 630 ; Er. fil. Vet. Ak.
Handl. vii. (1867) p. 24.—Thallus effuse, very th in , rimoso-areolate,
suhleprose, pale oohraceous o rg lauoous-grey (K —, CaCl—). Apotheoia
very minute, in nate, a t first concave, th en plane, h la o k ; the
th allin e margin th in , en tire; spores Sme, ellipsoid, 0 ,0 1 2 -1 8 mm.
loug, 0 ,0 0 7 -1 1 mm. thiok ; paraphyses not discrete, bluish towards
th e ap ices; hymenial gelatine deep blue with iodine.—Leight. Lich.
F l. ed. 3, p. 195.— Aspicilia ochracea (non Schaer.) Mudd, Alan,
p. 163. Lecanora gibbosa forma lacustris Leight. Lioh. Fl. ed. 1,
p. 210 pro p a rte .— Brit. E x s .: Leight. n. 292 ; Mudd, n. 136.
A rather inconspicuous plant which, in drv weather, might readily be
overlooked, but is well characterized by the characters given. AVheu sub-
ochracequs, the black apothecia and the more leprose thallus at ouce
distinguish it from the preceding species; while the minute fruit, apart
from anatomical differences, definitely separates it from the ochraceous
state of L . calcarea. The apothecia are usually very numerous.
Hab. On moist rocks and stones in hilly distriets.—Bistr. Found only
in N. England.—B. M .; Cockshaw Bank, Cleveland, Yorkshire.
178. L. P re v o s tii F r. fil. Lioh. Soand. (1871) p. 288.— Thallus
effuse, very th in , continuous, whitish, greyish- or fleshy-white, often
obsolete (K —, CaCl — ). Apothecia miuute, deeply immersed, subrotu
n d ate or variously diftbrm, concave, oarneous or pale-oarneous,
th e proper margin connivent, discrete from th e thalline margin ;
spores ellipsoid, 0 ,0 1 4 -2 2 mni. long, 0 ,0 0 9 -1 1 mm. th ic k ; p a ra physes
no t d is c re te ; epitheoium co lo u rless; hymenial gelatine
bluish, th en sordidly wine-coloured with iodine.— Leight. Lich. Fl.
ed. 3, p. 198 ; Cromb. Grevillea, xix. p. 5 8.— Lecanora epulotica Yar.
Prevostii Cromb. Lioh. Brit. p. 55 ; Leight. Lioh. FL ed. 1, p. 212.
Gyalecta geoica Aoh. ? Leight. Angio. Lioh. t. 15. fig. 1. Gyalecta
Prevostii F r. Lioh. E ur. (1831) p. 197.
^ At one time regarded by Nylander as a variety of the following species,
differing chiefly in the irregular foveolate apothecia. I t belongs, however,
to this subsection, from the character of the gonidia, w h i c h / * Th.
AI. Fries (Lich. Scand. p. 289) are 0,009-16 mm. in diameter. In
the British specimens the thallua is usually confused with the substratum,
whence forma proletaria Fr. fil. I. c. I t is then, from the colour of the
very small, though numerous, apothecia, a rather inconspicuous plant.
_ Hab. On calcareous rocks in upland tracts of hilly and mountainous
districts.—LHstr. Seen from only a few localities in W. and N. England,
as also from the Grampians, Scotland,—B. AI.: Bathampton Downs,
Somerset; Teesdale, Durham; Levens, AVe.stmoreland. Craig Tulloch,
Blair Athole, Pe rthshire ; Oraig Guie, Braemar, Aberdeenshire.
j't
Form melanocarpa Stiz. St. GaU. Nat. Ges. 1881, p. 383 —
I h a lus as in th e type. Apotheoia a t length emersed, prominent,
b ia o j the th a lh n e margin obliterated.— Cromb. Grevillea, xviii.
p. b 8 .— Hymeneha Prevostii var. ¡i. melanocarpa K rempelh. Lich. FI.
Bayer. (1861) p. 167. Lichen punctatus Eng. Bot. t. 450 (accord-'
mg to the specimen figured in Hb. Sowerby and the diagnosis
given). A sp icih a epulotica var. ¡3. punctata Aludd, Man p 161
Ureeolana cyrtaspis Gray, Nat. A rr. i. p. 458 ? U. Aeharii var. ¡3
cyrtaspis Ach., Sm. Eng. PI. v. p. 172.
Though not described by Krempelhuber I. e., the British specimens
quite correspond with one from his own herbarium. AVere it not that the
young apothecia are as m the type, it would form a good variety AVhen
the Iruit IS immersed it looks much like young states of Lecidea caldvora.
Hab. On calcareous rocks in upland situations.-DibZr. Apparentlv
vmry local and scarce m S. W. mid N. England, as also on the Central
(jrampians, Scotland.-H3. AI.; Bathampton Downs, Somersetshire ; Teesdale,
Durham. Craig Tulloch, Blair Athole, Perthshire.
Var. ¡3. affinis Nyl. Stiz. St. Gall. Nat. Ges. 1881, p. 385.—
Thallus thm, pale-flesh-coloured or suboohraoeous. Apotheoia verv
minute, a t len g th slightly emersed, pale-testaoeous, the thalline
margin p e rsisten t; spores 0 ,0 1 4 -1 8 mm. long, 0 ,0 0 9 -1 3 mm.
Cfroviilea, xix. p. 58 (lapsu sub L . epulotica).— Hyme-
neha affinis Mass. Geneao. Lioh. (1854) p. 1 3 ; Symm. Lich. p. 23.
Regarded as a distinct species by Alassalongo and others, this is only a
variety ot L. Premstu, with which it is subconfluent, dilferino- only in the
more emergent apothecia and the size of the spores. In "the British
specimens the thallus is at times slightly ochraceous.
Hab. On calcareous and serpentine rocks in subalpine tracts.— Bistr
Fxtremely rare in N. Eugland and on the Grampiaus, Scotland —B AI I
Teesdale Durham. Craier Tulloch, Blair Athole, Perthshire; the Khoil'
near Ballater, Aberdeenshire. ’
b. Gonidial system composed of ohrysogonidia, large and concatenate,
w ith thiokish, firm membrane or perigonidium. (lonasuis F r ’
fil. Lioh. Scand. i. (1881) p. 273.)
179. L. epulotica Nyl. in Cromb. Lioh. Brit. (1870) p. 55 (exol.
var.).—Thallus determinate or subeffuse, th in or very th in con:
tinuous or rimulose, pale or pale-whitish (K - , CaCl - ) . Apothecia
innate, somewhat concave, submoderate, pale or pale-rose-coloured •
th e thalline m argin thickish, often circumcised from the thallus •’
spores ellipsoid or subgloboso-ellipsoid, 0 ,0 1 8 -2 0 mm. long, 0 ,0 1 0 -
11 mm. th io k ; hymenial gelatine bluish with iodine.—Leight ’Lich
FI. p. 212 pro pa rte , ed. 3, p. 197 pro parte.— Aspicilia epulotica
Mudd Man. p. 161 pro parte, t. 3. f. 64. Gyalecta epulotica Aoh.
Lich. Univ. (1810) p. 151, t. i. f. 7 (secundum'specimen primarium
ex Anglia).
Externally not unlike states of L. lacustris, with which it is apt to he