314 CYCLOCARPINEE [LECANORA 
near Barmouth, Merioneth ; near Ayton, Cleveland, Yorkshire; Eggle- 
stone, Durham; Loch Creran, Barcaldine and Inverary, Argyll; 
Morrone, Braemar, Aberdeenshire; Old Deer Park, Castlemartyr, 
Cork; Muckross, Killarney, Kerry. 
64. L. pallescens Mudd Man. p. 155 (1861) (? Linn.); Nyl. 
in Bull. Soc. Linn. Norm. sér. 2, 1. p. 68 (1868).—Thallus rather 
thin and membranaceous or zonate at the circumference, becoming 
sometimes thickish and wrinkled-granular, whitish or greyish, 
bounded by a white hypothallus (K —, CaCl —). Apothecia 
small or moderate in size, the disc concave then plane or wrinkled, 
faintly yellowish-pink, generally white pruinose (K(CaCl) + 
reddish), the thalline margin prominent, entire (K(CaCl) + 
reddish) ; paraphyses slender; spores 8 in the ascus, ellipsoid, 
up to 64 p» long, 18-34 » thick.—Cromb. in Grevillea xviii. p. 70 
(1890) & )Monogr. i. p. 462; var. tumidula Mudd Man. l. e. 
L. tartarea subsp. pallescens Cromb. Lich. Brit. p. 54 (1870) pro 
parte. LL. parella f. pallescens Leight. Lich. Fl. p. 189 (1871) 
pro parte; ed. 3, p. 202 pro parte. Lichen pallescens L. Sp. Pl. 
p. 1142 (1753). 
Exsice. Johns. n. 143; Larb. Cesar. n. 76; Mudd n. 126. 
Generally with a thinner thallus and smaller apothecia than 
L. parella, from which it differs in the corticolous habitat, but chiefly 
in the reaction of the apothecial margin. 
Hab. On trunks of trees.—Distr. Rare throughout the British 
Isles.—B. M. Jersey; Launceston, Cornwall; near Lustleigh, Devon ; 
New Forest, Hants; Shanklin, I. of Wight; near Hastings, Sussex ; 
Barmouth, Merioneth; Trefriw, Carnarvonshire; near Easby, Cleve- 
land, Yorkshire; Barcaldine, Argyll; Ben More, Perthshire. 
65. L. upsaliensis Nyl. ex Norrl. in Not. Sillsk. Faun. & Fl. 
Fenn. Férh. xiii. p. 332 (1873).—Thallus effuse, continuous or of 
scattered rounded smooth granules, greyish- or yellowish-white 
(K —, CaCl —). Apothecia rather small, the dise concave, 
becoming plane, generally densely granular-pruinose, the thalline 
margin thickish, entire; paraphyses slender; spores 4 to 8 in 
the ascus, 55-58 pw long, 26-38 p thick.—Cromb, in Grevillea 
xviii. p. 70 & Monogr. i. p. 463; Leight. Lich. Fl. p. 192; ed. 3, 
p. 176 (excl. Syn. Engl. Bot.). LZ. parella var. upsaliensis Hook. 
Fl. Scot. ii. p. 48 (1821)? Cromb. Lich. Brit. p..54. Inehen 
upsaliensis Iu. Sp. Pl. p. 1142 (1753); 8S. F. Gray Nat. Arr. i. 
p. 454 (as the Upsal Rinodine) ? 
Differs from L. parella in the habitat and in the character of the 
thallus. It is possible that Hooker's and Gray’s citations may refer 
to L. tartarea var. frigida. 
Hab. Incrusting mosses on the ground in alpine situations.— 
Distr. Very rare on the Grampians, Scotland.—B. M. Craig Calliach, 
Perthshire ; Morrone, Braemar, Aberdeenshire. 
