414 LICHENACKI. [LECANORA, 
Hab. On trunks and branches of firs and on fir pales in maritime and 
upland tracts Distr. Rather rare in England; not uncommon in 
Scotland; not seen from Wales or Ireland.—B.M.: Near Leith Hill, 
Surrey; near Penzance, Cornwall; Buxton, Derbyshire; Ayton Moor, 
Cleveland, Yorkshire; Staveley, Westmoreland. West Lomond Hill, 
Fifeshire; Achmore, Killin, Ben Lawers, and Blaeberry Hill, Perth- 
shire; Durris, Kincardineshire; Countesswells Wood, near Aberdeen ; 
Rothiemurchus, Inverness-shire ; Applecross, Ross-shire. 
Var. G3. geographica Nyl. ev Cromb. Grevillea, xviii. p, 68.— 
Thallus finely decussate throughout, with black hypothalline lines. 
Apothecia subminute, plane or somewhat convex, brown.— L, sub- 
fusca e. geographica Mass. Ric, Lich. (1852) p. 6.—Brit. Ews.: 
Mudd, n. 113 pro parte. 
A well-marked and rather fine variety. The numerous black lines with 
which it is everywhere limited, so that the individual plants are of small 
size, seem to belong to Lecidea parasema, with which it is always asso- 
ciated in our specimens. 
Hab. On shrubs and the branches of trees, chiefly ash, in wooded 
maritime and upland districts.—Distr. Only here and there throughout 
England, 8.W. Scotland, the S.W. Highlands, and the S. Grampians; 
no doubt to be detected elsewhere—B. M.: St. Leonard’s Forest, 
Sussex ; New Forest, Hants; Ullacombe, near Bovey Tracey, 8. Devon ; 
Bathampton, Somerset; Desford, Leicestershire ; Malvern, Worcester- 
shire; Cliffrigg, Cleveland, Yorkshire. Airds, Appin, Argyleshire ; 
Finlarig, Killin, Perthshire. 
92. L. atrynea Nyl. Flora, 1872, p. 250, nota 2.—Thallus deter- 
minate or indeterminate, granulate or verrucoso-areolate, whitish or 
greyish-white (K + yellowish, CaCl—). Apothecia moderate or some- 
what large, plane or at length convex, brown or corneous-brown, tho 
thalline margin crenulate, rarely subentire ; paraphyses thickish ; 
epithecium brown, granuloso-inspersed ; spores 0,011-18 mm. long, 
0,006-9 mm. thick; hymenial gelatine bluish, then wine-reddish 
(the thece violet) with iodine.—Cromb. Grevillea, xviii. p. 68.— 
DL. subfusca e. atrynea Mudd, Man. p. 147 pro parte; Cromb. Lich. 
Brit. p. 51; Leight. Lich. Fl. p. 208, ed. 3, p. 187. Lecanora sub- 
fusca ¢. atrynea Ach, Lich. Univ. (1810) p. 395. 
In some conditions this also closely resembles L. rugosa, of which, as 
noted by Nylander (Flora, 1883, p. 107), it is almost a subspecies. The 
British specimens, with a single exception saxicolous, are for the most part 
not very typical. At times the apothecia are infested with Spheria epi- 
cymotia Wallr., giving them much the aspect of those of Z. cotlocarpa. 
The spermogones have the spermatia (ide Nyl. im litt.) 0,020-30 mm. long, 
0,0005 mm. thick. 
Hab, On rocks, very rarely on trunks of trees, in maritime and upland 
situations.— Distr. Found only in a few localities in Great Britain and 
Ireland. B. M.: Shanklin, Isle of Wight; Buxton, Derbyshire; Bur- 
mouth, Merionethshire ; near Whitehaven, Cumberland. Killin, Perth- 
shire; Hillof Ardo, near Aberdeen. Dinis Island, Killarney, co. Kerry. 
