408 LICHENACE!. [LECANORA. 
somewhat convex and sublecideine; spores ellipsoid or oblong, 1- 
septate, 0,009-14 mm. long, 0,004-6 mm. thick; paraphyses sub- 
moderate, brownish at the apices ; hymenial gelatine deep bluish, then 
dark violet with iodine-—Eng. Bot. Suppl. t. 2662. f. 2; Sm. Eng. FI. 
v. p. 187; Cromb. Lich. Brit. p.49; Leight. Lich. FI. p. 228, ed. 3, 
p. 219.—Lecania erysibe y. aipospila Mudd, Man. p.141. Parmelia 
atpospila Wahl. in Ach. Meth. Suppl. (1803) p. 36.— Brit. Eas. : 
Cromb. n. 159. 
A well-marked species, easily recognized by the papillose thallus and 
the situation of the apothecia. In herbaria specimens the thallus is 
usually entirely verrucoso-unequal or papillate, but in nature it is some- 
what radiate at the cireumference, pe more or less limited by the hypo- 
thallus. When growing in drier situations, it becomes brownish-black or 
almost black. The apothecia are situated chiefly on the central papille, 
with the thalline margin eventually excluded. The spermogones are 
prominent and frequent towards the circumference of the thallus, with 
spermatia arcuate, 0,016-23 mm. long,-scareely 0,001 mm, thick. 
Hab. Ou granitic and schistose rocks in maritime districts.—Distr. 
Local though plentiful in the Channel Islands, 8.W. and N.E. England, 
N.E. Scotland, and S.W. Ireland.—B. M.: Le Fret, Island of Jersey ; 
Jerbourg, [sland of Guernsey. Tolpedn Penwith, rear Penzance, Land’s 
End, and the Lizard, Cornwall; Holy Island and Staples Island, North- 
umberland. Portlethen and Cove, Kincardineshire ; near Peterhead, 
Aberdeenshire. Shirky Island, co. Kerry. 
Var. G. maritima Nyl. Lich. Scand. (1861) p. 158.—Thallus thin, 
granulato-rugose, suberenate at the circumference, greyish, the hypo- 
thallus scarcely visible; otherwise as in the type——Cromb. Lich. 
Brit. p. 49; Leight. Lich. Fl. p. 229, ed. 3, p. 219. 
Characterized by the epapillate, thinner, more continuous thallus, and 
by the hypothallus being less distinct. Sommerfelt (Lapp. Suppl. p. 97) 
says that the thallus at length becomes griseo-blackish, but this does 
not occur in our few specimens. The apothecia, which are situated on 
the granules, are frequently sublecideine. 
Hab. On granitic and schistose rocks in maritime districts.— Dist. Very 
local and scarce in 8.W. and W. England, and in N.E. Seotland.—B. M. : 
Near Penzance, Cornwall; near Douglas, Isle of Man. Portlethen, Kin- 
cardineshire. 
85. L. poliophea Ach. Lich. Univ. (1810) p. 398; Wahl. FI. 
Lapp. p. 410, t. 27. f. 3.—Thallus subdeterminate, granulato- 
papilloso-diffraet or papilloso-verrucose, greyish- or greenish-brown 
(K—); hypothallus fibrilloso-byssoid, whitish, often limiting the 
thallus. Apotheeia small, adnate, plane, dull-brown or brownish, the 
thalline margin thin, erenulate; spores ellipsoid,simple,0,007-13 mm. 
long, 0,004-6 mm, thick ; paraphyses slender, the apices incrassate ; 
hymenial gelatine bluish with iodine.—Cromb. Lich. Brit. p. 50; 
Leight. Lich. Fl. p. 214, ed. 3, p. 200.—Parmelia poliophea Wahl. 
in Ach. Meth. Suppl. (1803) p. 38. Lecanora spodephea (Wahl.) 
Borr, Eng. Bot. Suppl. t. 2662. f. 3; Sm. Eng. Fl. v. p. 187.—Brit. 
Evs.; Cromb. n. 62. 
