slightly^ convex, contiguous. Apothecia appressed, becoming
superficial, plane or slightly convex.—L . contigua var. calcarea
Fr. Lich. Eur. p. 302 (1831) (excl. syn) ; Leight. op. cit. ed. 3,
p. 300.
A well-marked form with white rather shining smooth thallus.
rocks.—AisZr. Not unfrequent in England, Wales and
W. Ireland; not recorded from Scotland.—A. Af. St. Minver and
St. Wenn, Cornwall ; Okehampton, Devon ; Beddgelert, Carnarvon ;
Kylemore, Connemara, Galway.
Var. percontigua A. L. Sm.—Distinguished by the rather
larger, umbonate apothecia, and the different chemical reaction
(K + yellowish and then brownish-red).—L. percontigua Nyl in
Flora Ixv. p. 457 (1882). / u j
Hah. On rocks, rare.—A. Af. Barrowmouth, Whitehaven, Cumberland
(the only locality).
Var. platycarpa Fr. Lich. Eur. p. 300 (1831).—Thallus diffuse,
whitish or greyish, th in or a t length disappearing. Apothecia
moderate in size or large, a t first plane with a tumid prominent
margin, becoming immarginate, sometimes appressed-adnate.—
Mudd Man. p. 2 1 0 ; Cromb. Lich. Brit. p. 80 ; Leight. Lich.
El. p. 292 ; ed. 3, p. 299. ■ L. platycarpa Ach. Lich. Univ.
p. 173 (1810); var. steriza Floerke ex Koerb. Syst. Lich.
Germ. 249 (1856) ; f. steriza Mudd I. c. ; var. hydrophila Fr. I. c.
301 ; f. hydrophila Leight. Lich. FI. p. 293 (1871) ; ed. 3, p. 300.
Fatellaria macrocarpa Dc. FI. Fr. ii. p. 347 (1805).
Exsicc. Mudd n. 109.
Distinguished from the type by the very scanty thallus.
Hab. On rocks. Not unfrequent in the hilly regions of N Eng-
SooUand and Ireland.—A. Af. Nant Ffranoon and
Beddgelert, Carnarvon; Ayton Moor, Cleveland, Yorkshire; Ben
Lawers, Perthshire ; Morrone, Braemar, Aberdeenshire ; Doughruagh
Mt., Connemara, Galway.
Var. flavicunda_ Nyl. Lich. Scand. p. 224 (1861).—Thallus
I’usty-red, ra th e r thick, tartareous, areolate, the areolæ flat and
smooth. Apothecia moderate in size or large, flat or somewhat
convex, more or less whitish-pruinose.—Cromb. Lich. Brit p 80 •
f. flavicunda Leight. Lich. PI. p. 294 ; ed. 3, p. 301. L. flavi-
.cunda Ach. Lich. Univ. p. 166 (1810).
Hab. On rocks.—Afsir. Not unfrequent in maritime and hilly
districts of S.W. and N. England, Wales and Scotland.—A. Af. Carn
Galven, near Penzance, Cornwall; Clee Hill, Shropshire ; Cader Idris,
Merioneth ; Snowdon, Carnarvon ; Ayton Moor, Cleveland, Yorkshire
; Teesdale, Durham ; Ben Beck, Sidlaw Hills, and Baldoran,
Forfarshire; Ben Lawers, Perthshire; Craig Ooinnooh and Morrone,
Braemar, Aberdeenshire; Dunkerron, Kerry; Connemara, Galway;
Errif Eiver, Mayo. > j <
114. L. sorediza Nyl. in Bull. Soc. Linn. Norm. ser. 2,
VI. p. 292 (1872).—Thallus determinate, smooth, areolaterimulose,
crowdedly sorediose, greyish; the soredia thin, plane,
rotundate (K —, CaCl —, medulla I + bluish) ; hypotballus
blackish. Apothecia large or submoderate, plane, margined,
black, bluish-grey-pruinose; paraphyses moderate or thickish;
epithecium brownish ; hypothecium brownish-black ; spores fusiform
ellipsoid, 0,015-22 mm. long, 0,007-9 mm. th ick ; hymenial
gelatine, as also the asci, bluish with iodine.—Cromb. in Journ.
Bot. xiii. p. 141 (1875); Leight. Lich. PI. ed. 3, p. 305.
Exsicc. Mudd n. 181 ; Johns, n. 349.
Differs from L. contigua in the peculiar soredia, the thicker paraphyses,
and the reactions with iodine. The hypotballus limits the
thallus and is occasionally elsewhere visible. In the few British
specimens the apothecia are usually somewhat scattered. The spermogones
have the spermatia straight, 0,006-8 mm. long ( fide Nyl. Pyr.
Or. Obs. Nov. p. 63 (1891)).
Hah. On rocks, gneissio and schistose, in upland hilly situations.—
Distr. Only a few localities in W. and N. England, N. Wales, and
the S. Grampians, Scotland.—A. Af. Malvern Hills, Worcestershire ;
Dolgelly, Merioneth; Langbaurghrigg, Cleveland, Yorkshire; The
Trossachs, Perthshire.
Form depauperata Cromb. MS.—Thallus thin, nearly esori-
diose, greyish or glaucous-white, the areolæ dispersed ; hypotballus
predominating.
Probably only a less developed state with a few very small soredia
here and there visible. The apothecia are but little pruinose. I t
seems to connect the type with form esorediza Nyl. ex Lamy in Bull.
Soc. Bot. Fr. XXV. p. 450 (1878).
Hab. On calcareous rocks in a mountainous district.—A. Af.
Twelve Pins, Connemara, Galway (the only locality).
115. L. tenehrans Nyl. in Flora lix. p. 309 (1876).—Thallus
determinate, continuous, rimulose, leaden-greyish or dark-leaden-
coloured (K —, CaCl —, medulla partly I + bluish) ; hypotballus
black. Apothecia moderate in size, plane and thinly margined,
then convex and immarginate, black, concolorous within ; paraphyses
slender, dark a t the apices ; hypothecium thick, black ;
spores _ ellipsoid, 0,018-24 mm. long, 0,010-13 mm. th ick ;
hymenial gelatine and asci persistently deep-blue with iodine.—•
Cromb. in Grevillea v. p. 28 ; Leight. Lich. FI. ed. 3, p. 303.
Nylander says, only a subspecies of L. contigua,
differing chiefly in the colour of the thallus and the reaction of the
hymenial gelatine. In the two specimens seen the apothecia are here
and there several confluent.
Hab. On schistose rocks in a mountainous region.—A. Af. Summit
of Doughruagh Mt., Connemara, Galway (the only locality).
116. L. albocoerulescens Ach. Meth. p. 52 (1803).—Thallus
subdeterminate, thickish, smooth, continuous or a t length cracked,
opaque, whitish or glaucous (K - , CaCl - ) ; hypotballus
blackish. Apothecia moderate in size, appressed, plane, black,