LECANORA | LECANORACEE® 305 
preceding species, and the spores are smaller; these are present in 
very few of our specimens, though the apothecia are fairly abundant. 
Hab. On siliceous rocks in hilly regions.— Distr. Rare in N. England 
and among the Grampians, Scotland.—B. M. Friar’s Crag, Keswick ; 
summits of Craig Calliach and Ben Lawers, Perthshire. 
- 53. L. argopholis Ach. Lich. Univ. p. 346 (1810).-—Thallus 
subdeterminate, thickish, granulate- or warted-areolate, the 
granules contiguous, flattened or rounded, almost imbricate and 
crenate at the circumference, yellowish or whitish (K + yellow). 
Apothecia moderate in size, the disc plane or convex, brownish- 
black, the thalline margin entire or crenate ; paraphyses coherent, 
scarcely thickened and brown or greenish-black upwards ; spores 
oblong-ellipsoid, 10-18 y long, 5-9 pw thick; hymenial gelatine 
blue with iodine——Hook. in Sm. Engl. FI. v. p. 186; Cromb. 
Lich. Brit. p. 52 & Monogr. i. p. 441; Leight. Lich. Fl. p. 196; 
ed. 3, p. 180. Parmelia atra var. argopholis Ach. Meth. Lich. 
Suppl. p. 32 (1803). 
Hzsicc. Johns. n. 267. 
Frequently classified as a variety of L. frustulosa, but differs in 
the more contiguous rimose thallus, in the more pronounced reaction 
with potash, the crowded apothecia and the larger spores. It differs 
from L. gangaleoides in the colour and the somewhat scaly nature of 
the thallus and in the less prominent verruce. 
Hab. On rocks in hilly maritime or mountainous regions.— Distr, 
Rather rare but widely distributed in Great Britain and Ireland.— 
B. M. Cleve Hill, Somerset; near Crosfaen, Monmouth; Trefriw, 
Llanberis, Glyder Vahr and Carnedd Dafydd, Carnarvonshire ; Gunner- 
ton Craggs, Northumberland; Pugh Crag, Westmoreland; Bassen- 
thwaite, Cumberland; Achosragan Hill, Appin, Argyll; Ben Lawers, 
Perthshire ; Letter Hill and Dawros River, Connemara, Galway. 
G. Badia group.—Thallus dark-coloured (K —). Apothecia 
dull-brown or black, generally small; spores generally rather 
small. 
54. L. badia Ach. Lich. Univ. p. 407 (1810).—Thallus wide- 
spreading, thickish, granulate or warted-areolate, sometimes 
almost subsquamulose, especially at the circumference, deep 
chestnut- or olive-brown, hypothallus black (K —, CaCl —). 
Apothecia generally numerous and crowded, small or moderate 
in size, the disc plane or rarely convex, dull-brown or brownish- 
black, the thalline margin persistent, entire or slightly crenulate, 
often becoming flexuose, not very prominent ; paraphyses thickish, 
coherent, septate, uneven, often branched, slightly wider at the 
tips and deep-brown ; spores fusiform, 10-16 y long, 4—6 p thick. 
—Mudd Man. p. 144, t. 2, fig. 50; Cromb. Lich. Brit. p. 53 & 
Monogr. i. p. 451; Leight. Lich. Fl. p. 212; ed. 3, p. 198. 
L. squamulosa Tayl. in Mackay Fl. Hib. ii. p. 1389 (1836) pro. 
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