LECANORA. ] LECANO-LECIDEEL. 453 
founded. In age the apothecia become somewhat large and convex, with 
the thalline margin obliterated. 
Hab. On quartzose rocks in mountainous districts—Distr. Only 
sparingly among the Grampians, Scotland. —B. M.: Ben Lawers, 
Perthshire ; Morrone, Braemar, Aberdeenshire. 
146. L. austera Nyl. Flora, 1874, p. 309.—Thallus subdeter- 
minate, thin, unequal, rimose, cervine or cervine-badious (K—, 
CaCl—); hypothallus thin, black, little visible. Apothecia mode- 
rate or somewhat large, plane, badio-brownish, often proliferous ; 
the thalline margin flexuose, often subcrenate, slightly shining ; 
spores ellipsoid, about 0,009 mm. long, 0,007 mm. thick; para- 
physes moderate, jointed; hymenial gelatine scarcely tinged, but 
the thece bluish with iodine——Cromb. Grevillea, iii. p. 23; Leight. 
Lich. Fl. ed. 3, p. 199. 
Closely allied to the preceding species, but differing especially in the 
less developed thallus and the much shorter spores. The only specimen 
gathered is well fertile, the apothecia varying as above. The spermo- 
gones also are frequent, with spermatia 0,004-5 mm. long, scarcely 
0,001 mm. thick. 
Hab, On weathered quartzose stones, in an alpine locality.—Distr. 
Very local and scarce on one of the 8. Grampians, Scotland —B. M. : 
Summit of Ben Cruachan, Argyleshire. 
147. L. atriseda Nyl. Act. Soc. Linn. Bord. sér. 3, t. i. (1856) 
p. 337 ; Lich. Scand. p. 170.—Thallus areolato-granulate, brown or 
dull-brown ; the granules contiguous or scattered, convex (K—, 
CaCl—); hypothallusthin, black, often obsolete. Apothecia moderate, 
at first immersed, then appressed, plane or somewhat convex, 
brown or dark-brown; the thalline margin thin, entire; spores 
ellipsoid, obtuse at the apices, 0,008-12 mm. long, 0,005-7 mm. 
thick ; paraphyses rather stout, not very discrete, brownish at the 
apices.—Cromb. Journ. Bot. 1871, p. 178.—Lecanora badia var. 
atriseda Leight. Lich. Fl. p. 213, ed. 3, p.198. Parmelia badia 
y. atriseda Fr. N. Sched. crit. 1827, p. 6; Lich. Eur. p. 149,— 
Lecanora nephea Somm. Suppl. Lapp. Or. (1826) p. 103, is an 
abnormal state of this, fide Fr. fil. Lich. Scand. p. 268, and is 
therefore scarcely to be adopted, though having priority. 
A good species, looking at first sight as if allied to L. squamulosa. In 
our few British specimens the thallus is determinate with the granules 
sufficiently contiguous. The apothecia are numerous and crowded, at 
times almost obliterating the verruce. The spermogones, which are 
sparingly present, are impressed, blackish at the apices, with spermatia 
0,018-20 mm. long, 0,001 mm. thick. 
Hab, On rocks in mountainous districts.—Distr. Rare in Wales, N. 
England, and the N. Grampians, Scotland.—B, M.: Dolgelly, Merioneth- 
shire; Fnnerdale, Cumberland ; Morrone, Aberdeenshire. 
