132 LECANO-LECIDEEI [bIATORINA 



p. 161 ; Cromb. Licli. Brit. p. 78 ; Lejglit. Lich. ¥\. p. 356 ; ed. 3, 

 p. 385. 



Hab. Parasitic on the thallus of Lecanora calcarea. — Distr. Some- 

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

 Yatton, SoiTierset ; IBarnsley Park and Cirencester, Gloucestershire ; 

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

 Carnarvonshire ; Craig Tulloch, Blair Athole, Perthshire ; Cong, 

 Lough Corrib, Galway. 



41. B. cristata A. L. Sm. — No proper thallus. Apothecia 

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

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

 carbonaceous; spores linear-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. 



Hab. Parasitic on the thallus of Lecanora subcarnea. — Distr. Rare, 

 found only in Wales (Barmouth, Merioneth). 



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

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

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

 paraphyses clavate and yellowish-brown at the apices ; hypo- 

 thecium somewhat yellowish ; spores oblong-fusiform (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. Siillsk. 

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

 xxii. p. 11. Specimen not seen. 



Hab. On the squaniules of Stereocaulon in mountainous regions. 



43. B. epiblastematica A. L. Sm. — Thallus effuse, 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 epiblastematica Wallr. Fl. 

 Crypt. Germ. ii. p. 464 (1833),_^«^e Arnold ex Rehm in Raben- 

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

 Ann. Sci. Nat. ser. 3, xvii. p. 119, t. 14, figs. 14-24 (1852). 

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

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

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

 L. Wallrothii Nyl. Z. 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 solitar}'^ or 

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



