LECANORA. | LECANO-LECIDELI. 407 
82. L. livida Ach. Lich. Univ. (1810) p. 375.—Thallus indeter- 
minate, pale-whitish or livid, squamuloso- diffract ; squamules adnate, 
contiguous, moderate, usually crenulate at the margins(K—). Apo- 
thecia minute, more or less immersed, several in each squamule, 
plane or slightly convex, concolorous with the thallus or livid flesh- 
coloured, the thalline margin entire, scarcely prominent; spores 
ellipsoid, 0,010-12 mm. long, 0,005-7 mm. thick; hymenial gela- 
tine faintly bluish, then tawny wine-red with iodine.—Cromb. Gre- 
villea, xvili. p. 68.—Lecanora galactina var. livida Nyl. in Cromb. 
Lich. Brit. p. 50; Leight. Lich. Fl. p. 207, ed. 3, p. 190. 
Now regarded by Nylander tm ditt, as a distinct species allied to LZ. 
galactina rather than to LZ. saaicola, under which he mentions it, Lich. 
Scand. p. 133, as belonging doubtfully to subgenus Sguamaria. From 
the other species of this subsection it is readily distinguished by the 
thallus and apothecia. Our few British specimens are well fertile. 
Hab, On calcareous walls in upland districts.—Distr. Seen only from 
N. England and the S.W. Highlands of Scotland.—B. M.: Wansbeck- 
Valley, Northumberland. Appin, Argyleshire. 
83. L. subluta Nyl. Flora, 1876, p. 232.—Thallus indeterminate; 
continuous or dispersed, thin, minutely granulose, whitish (K— ). 
Apothecia small, crowded, pale-yellow or yellow-sublivid, the thal- 
line margin suberenate ; spores ellipsoid, 0,010-12 mm. long, 0,005-6 
mm. thick; paraphyses not very distinct ; hymenial gelatine bluish, 
then wine-red with iodine-—Cromb. Grevillea, v. p. 106; Leight, 
Lich. Fl. ed. 3, p. 190. 
Evidently belongs to this subsection, though the spermogones have not 
been detected. In the specimens seen the thallus is, with a single excep- 
tion, somewhat scattered and developed chiefly about the apothecia, 
These are numerous, and from mutual pressure often become difform. 
Hab. On calcareous rocks in upland situations.— Distr. Local in N.W, 
Ireland and the 8. Grampians, Scotland.—B. M.: Recess and Dawros 
River, Connemara, co. Galway. Ben Lawers, Perthshire. 
Form perspersa Nyl. Flora, 1876, p. 233.—Thallus obsolete, 
Apothecia distantly scattered ; otherwise as in the type-——Cromb. 
Grevillea, v. p. 106; Leight. Lich. Fl. ed. 3, p. 190. 
Differs merely in the absence of a thallus (though traces of it are 
rarely seen) and in the scattered apothecia, which are somewhat smaller. 
Hab. On rocks in upland situations.— Distr. Only in N.W. Ireland.— 
B. M.: Dawros River, Connemara, co. Galway. 
84. L. aipospila Ach. Lich. Univ. (1810) p. 385.—Thallus sub- 
orbicular or expanded, tuberculose or papillate towards the centre, 
radiately sulcate or crenulate at the circumference, thinnish or mode- 
rate, brown or greyish-brown (K—) ; hypothallus dark, limiting the 
thallus or obsolete. Apothecia small, innato-sessile on the papilla, 
brown or blackish, at first plane with entire thalline margin, at length 
