BRITISH LICHENS

188 .CYCLOCARPINEJE BUELLIA
Fl. 308; ed. 3, 322; Carroll in Journ. Bot. v. 258 (1867); Cromb.
Lich. Brit. 89. Specimen not seen.
Closely allied with L. secedens NyI.-, a corticolous species of N.W.
France.
Hab. On a mica-schist rock on one of the S. Grampians (Ben
Lawers, Perthshire).
15. B. verruculosa Mudd Man. 215 (1861) (excl. var. spuria).
-Thallus effuse, minutely cracked-areolate, the areolre scattered
or contiguous, plane or slightly convex, smooth, yellowish-green
(K -, CaCl + orange-red, medulla I - ); hypothallus blackish,
often little visible. Apothecia black, minute, innate, almost
plane, thinly margined, becoming convex and immarginate;
hypothecium dull-brown; paraphyses coherent, brown at the
clavate apices; spores oblong, sometimes slightly constricted at
the septum, brown, 12-16 [.L long, 6-9 [.L thick; hymenial gelatine
deep-blue with iodine.-B. ocellata Koerb. Syst. Lich. Germ. 224
(1855). Lichen verruculosus Borr. in Engl. Bot. t. 2317 (1812).
Lecidea verruculosa Borr. ex Hook. in Sm. Engl. Fl. v. 174
(1833); Leight. Lich. Fl. 303; ed. 3, 315. L. ocellata Floerke
ex Flot. in Flora xi. 691 (1828); Cromb. in J ourn. Bot. vii. 108
(1869) & LlCh. Brit. 93. L. kaleida Tayl. in Lond. Joum. Bot.
vi. 150 (1847). L. lecanorina Salw. in Trans. Bot. Soc. Edin.
vii. 552 (1863) t "
Exsicc. Mudd n. 186.
Differs from B. spuria in the colour of the thallus ari9- in the larger
spores. The hypothecium in both these species is t1)rown in thick
section, but paler in thm section. The areolre are 66casionally sub·
squamulose. - ,
Hab. On rocks and flints.-Distr. Somewhat rare in maritime and
upland regions.-B. M. Lydd Beach, Kent; Carlton Bank, Cleveland,
Yorkshire; Muggleswick Hill, Durham; Staveley, Westmorland;
Lamplugh, Cumberland; Craig Tulloch, Blair Athole, Perthshire; near
Cork; Blackwater Bridge, Lough Caragh and Dunkerron, Kerry.
Subsp. prreponens A. L. Sm.-Thallus determinate, wartedareolate
or thinly granular, yellowish-green. Apothecia small,
subinnate, uneven, Immarginate; spores 15-17 [.L long, 8-10 [.L
thick.-Lecidea ocellata subsp. prmponens Nyl. in Flora Ii. 347
(1868); Cromb. in Journ. Bot. vii. 108 (1869) & Lich. Brit. 94.
L. verruculosa var. prmponens Leight. Lich. Fl. 304; ed 3, 316.
Hab. On rocks in maritime regions.-B. M. Portlethen and near
Cove and Nigg, Kincardinshire (the only localities).
16. B. saxatilis Koerb. Syst. Lich. Germ. 228 (1855).­
Thallus thickish, unequal, cracked, faintly yellowish-white or
greyish (K -, CaCI-). Apothecia black, minute, scattered,
innate, then sessIle, plane, the margin entire, sometImes prominent;
hypotheciUJll blackish-brown i paraphyses sub coherent,