132 LECANO-LECIDEEI [bIATOEINA 



p. 161 ; Cromb. lich. Brit. p. 78 : Leight. Lich. Fl. p. 356 ; ed. 3, 

 p. 385. 



Hai. Parasitic on the thallus of -Lecanora caTcarea. — IHstr. Some- 

 what rare though widely distributed in the British Isles. — B. M. Near 

 Yatton, Somerset ; Bamsley Park and Cirencester, Gloucestershire ; 

 Aran Mawddwy, Merioneth ; Trefriw and Great Orme's Head, 

 Carnarvonshire; Craig TuUoch, Blair Aihole, Perthshire; Cong, 

 Ijongh Corrib, Galwav. 



41. B. cristata A. L. Sm. — Xo proper thallus. Apothecia 

 black, very minute, solitary, or clustered, or in narrow flexuose 

 lines, concave, the margin, thick and obtuse ; hypothecium black, 

 carbonaceous ; spores Unear-oblong, minute, faintly 1-septate, 

 0,006-8 mm. long, 0,002-3 mm. thick. — Lecidea cristata Leight. 

 lich. n. p. 356 (1871) ; ed. 3, p. 385. Specimen not seen. 



Hob. Parasitic on the thaUus of iecariorasitftcarTiea. — Distr. Bare, 

 found only in Wales (Barmouth, Merioneth). 



42. B. stereoeauloriun Th. Fr. Lich. Arct. p. 188 (I860).— 

 Thallus absent. Apothecia parasitic, small, plane, at length 

 convex, immarginate, black, blackish or pale, dark within ; 

 paraphyses elavate and yeUowish-brown at the apices; hypo- 

 thecium somewhat yellowish; spores oblong-fasiform (usually 

 thicker above), 0,013-19 mm. long, 0,004-6 mm. thick ; hymenial 

 gelatine tawny-wine-red, the asci bluish and then violet at the 

 apices, with iodine. — Lecidea stereocaulorum Nyl. in Not. Sallsk. 

 Faun. & Fl. Fenn. n. ser. v. p. 182 (1866) ; Cromb. in Grevillea 

 xxii. p. 11. Specimen not seen. 



floi. On the squamules of Stereocaiilon in mountainous regions. 



43. B. epiblastematica A. L. Sm. — Thallus eflFiise, thin, 

 scattered, minutely granulate, whitish or obsolete. Apothecia 

 small, at first subplane with paler margin, then convex and immar- 

 ginate, sordid-pale-brown, at length blackish ; paraphyses slightly 

 incrassate at the apices ; hypothecium colourless or brownish ; 

 spores fusiform-ellipsoid or ovoid, simple or 1-septate, 0,012-15 

 mm. long, 0,005-7 mm. thick ; hymenial gelatine pale-bluish 

 then wine-red with iodine. — Peziza ^hlastematica Wallr. Fl. 

 Crypt. Germ. ii. p. 464 (1833). fide Arnold ex Rehm in Eaben- 

 horst's Krypt.-Fl. i. 3, p. 323 (1890). Scutula WallrotMi Tul. in 

 Ann. Sci. Nat. ser. 3, xvii. p. 119, t. 14, figs. 14-2 1 (1852). 

 Biatora Heerii Hepp in Schser. Lich. Helv. n. 630 (1852). 

 Lecidea Heerii Nyl. in Not. Sallsk. Faun, tt Fl. Fenn. n. ser. v. 

 p. 150 (1866) ; Cromb. in Journ. Bot. xx. p. 275 (1882). 

 L. WaJlrothii Xyl. ?. c. ; Cromb. in Journ. Bot. xii. p. 148 (1874) ; 

 Leight. Lich. Fl. ed. 3, p. 388. 



In the few British specimens the thallus described by Nylander 

 is entirely absent. The parasitic apothecia are either solitary or 

 more frequently aggregate on the host. Small brick-red pycnidia also 



