IQ2 LECANO-LECIDEEI [bUELLIA 



England, Wales, on the Grampians, Scotland, and in W. Ireland. — 

 B. M. Bradgate Pai-k, Leicestershii-e ; near Buxton, Derbyshire; 

 DolgeUy and Cader Idris, Merioneth; near Douglas, Isle of Man; 

 Eskdale, Cumberland ; Ben Lawei-s and Craig CaUiarch, Perthshire ; 

 Morrone, Braemar, Aberdeenshire; Glen Nevis, Invemessshire ; 

 near Kylemore, Connemara, Galway. . 



33. B. deludens A. L. Sm. — ThaUus determinate thin, firm, 

 cracked, whitish (Kf + yellowish, CaCl — ); hypothaUus thin, 

 black. Apbthecia rather large, plane, innate and circumcissed, 

 obtusely margined, black ; hypothecium brown ; paraphyses sub- 

 discrete, regular, brown or violet-brown at the clavate apices, 

 the epithecium blackish (K + purplish) ; spores eUipsoid, dark- 

 brown, with a hyaline epispore, 0,022-27 mm. long, 0,008-13 mm. 

 thick ; hymenial gelatine deep-blue with iodine. — Lecidea de- 

 ludens Nyl. in Flora Ivi. p. 296 (1873) ; Cromb. in Gre-villea ii. 

 p. 90 ; Leight. Lich. Fl. ed. 3, p. 323. 



The apothecia usually scattered, are occasionally 2-3 -confluent, 

 the margin then being obliterated. 



Hab. On quartzose stones in an alpine situation. — B. M. Summit 

 of Cairn Gowar, Blair Athole, Perthshire (the only locality). 



34. B. confervoides Krempelh. Lich.-Fl. Bay. p. 200 (1861). 

 — ThaUus effuse, greyish- or brownish-white, thin, tartareous, 

 areolat«, the areolae small, contiguous or scattered, plane or 

 slightly convex, hypothallus blackish, usually indistinct. Apo- 

 thecia small, black, innate sessile, plane, indistinctly marginate ; 

 hypothecium blackish-brown; paraphyses slender, ppnglntinate, 

 sHghtly clavate, and blackish-brown at the apices ; spores eUip- 

 soid, at first colourless, becoming brown, with a hyaline epispore, 

 0,021-30 mm. long, 0,008—14 nmi. thick. — Lecidea atroalbicans 

 Nyl. in Flora Iviii. p. 363 (1875) ; Leight. Lich. Fl. ed. 3, p. 328. 



Distinguished by the smooth thaUus and the innate flat apothecia. 



Hob. On rocks. — Bisir. Bare in W. Scotland and W. Ireland. — 

 B. M. Barcaldine, Argyll; Cloghan, Connemara, Galway. 



35. B. hadioatra Koerb. Syst. Lich. Germ. p. 223 (1855).— 

 ThaUus determinate, thickish, areolate or cracked-areolate, the 

 areolse plane, brownish or dark-brown (K— , CaCl— , K, CaCI-|- 

 tawny-yeUow, meduUa I — ) ; hypothallus blackish. Apothecia, 

 innate, plane, thinly margined, black ; hypothecium dark-brown ; 

 paraphyses coherent or lax, purplish or reddish-brown at the 

 slightly clavate apices ; epithecium blackish (K-f- purpUsh violet) ; 

 spores elHpsoid or oblong-ellipsoid, often sUghtly constricted in 

 the middle, brown, or at length blackish-brown, with a thin 

 hyaline epispore, 0,026—36 mm. long, 0,012—18 mm. thick; 

 hymenial gelatine deep-blue with iodine. — Mudd Man. p. 214, 

 t. 4, f. 81, pro parte. Lecidea hadioatra Floerke ex Spreng. 



