LECANORA] LECANORACE 301 
rare in the Channel Islands.—B. M. Sark; St. Minver and Pen- 
zance, Cornwall; Bolt Head, Devon; Pulborough and Hastings, 
Sussex; Walthamstow and near Maldon, Essex; Malvern Hill, 
Worcestershire; Wrekin Hill, Shropshire ; Cheveley Park, Cambridge- 
shire; Bardon Hill, Leicestershire; Barmouth and Dolgelly, 
Merioneth; Anglesea; Roseberry, Cleveland, Yorkshire; Staveley 
near Kendal, Westmoreland; Egglestone, Durham ; Wansbeck, North- 
umberland ; Rerrick, Kirkcudbrightshire; Appin, Argyll; Ben Lawers, 
Perthshire; Portlethen, Kincardineshire; Craig Guie, Braemar, Aber- 
deenshire; Glen Nevis, Invernessshire; Killarney, Kerry; Letter 
Hill, Connemara, Galway; Lambay Island, Dublin. 
49. L. epanora Ach. Lich. Univ. p. 377 (1810).—Thallus 
effuse, thickish, of crowded or scattered verrucose or subsquamulose 
granules, greenish-yellow, with citrine-yellow soredia, the hypo- 
thallus blackish or obsolete (K—). Apothecia sessile, plane, 
brownish-yellow, the thalline margin prominent, flexuose or sub- 
crenulate ; paraphyses coherent, slender, septate, scarcely widened 
at the tips, the epithecium brownish-yellow ; spores ellipsoid, 
small, 8-11 » long, 5:7 » thick; hymenial gelatine blue with 
iodine.— Cromb. Lich. Brit. p. 53 & Monogr. i. p. 429; Leight. 
Lich. Fl. p. 205 ; ed. 3, p. 189. LL. alboflavida Tay]. in Mackay 
Fl. Hib. ii. p. 260 (1836) ; Mudd Man. p. 155. Lichen epanorus 
Ach. Lich. Suec. Prodr. p. 39 (1798). 
Ezxsice. Leight. n. 397. 
Well distinguished by the yellow soredia which sometimes make 
large patches seem as if pulverulent. The hypothallus is scarcely 
visible in our specimens, which are also largely sterile. 
Hab. On siliceous rocks and walls.— Distr. Local in N. Wales, the 
Highlands, Scotland, and in S.W. Ireland.—B. M. Barmouth and 
Dolgelly, Merioneth; Ballachulish, Argyll; Glen Fender, Blair 
Athole, Perthshire ; Dunkerron, Kerry. 
50. L. polytropa Scher. Enum. p. 81 (1850) pro parte (incl. 
f. acrustacea).—Thallus effuse, rather thin, granulate- or cracked- 
areolate or subsquamulose, or almost evanescent, pale sulphur- 
coloured or greyish-green, a black hypothallus sometimes visible 
(K + yellowish). Apothecia small or moderate in size, generally 
less than 1 mm. across, closely adnate, at first plane, becoming 
convex, yellowish or reddish-flesh-coloured, the thin entire 
margin soon excluded; paraphyses rather slender, densely 
crowded and subconglutinate, sometimes widened and septate 
upwards, colourless, the epithecium a thin layer of brownish 
granules ; spores broadly ellipsoid, 9-14 pw long, 5-6 » thick.— 
Mudd Man. p. 151 (incl. var. aerustacea) ; Leight. Lich. Fl. 
p. 197 (incl. f. dllusoria) ; ed. 3, p. 181 ; Cromb. Monogr. i. p. 437. 
L. varia var. illusoria Ach. Lich. Univ. p. 380 (1810); var. 
polytropa Nyl. in Mém. Soc. Sci. Nat. Cherb. v. p. 114 (1857) ; 
Cromb. Lich. Brit. p. 52 (incl. f. illusoria). Lichen polytropus 
Ehbrh. Exs. n. 294 (1793) nomen nudum ; Ach. Lich. Suec. Prodr. 
