172 I.ECANO-LECIDEEI [bTJELLIA 



Stretton, Shropshire; Easby, Lounsdale and Battersby. Clereland, 

 Yorkshire ; I. of Lismore and Baroaldine, Appin, Argyll ; Lough 

 Feagh, Connemara, Galway. 



14. B. SUCCedens A. L. Sm. — ^Thallus eflFuse, thin, granulate, 

 unequal or subareolate, whitish. Apothecia submoderate, mar- 

 gined, brownish-black ; paraphyses moderate, jointed, thickened 

 and brownish at the apices ; hypotbecium brown or reddish- 

 browTi; spores ellipsoid, simple or 1-septate, blackish, 0,011- 

 14 mm. long, 0,004-5-0,0055 mm. thick; hymenial gelatine 

 bluish then wine-red with iodine. — Lecidea siiceedens Nyl. in 

 Flora xHx. p. 372 (1866); Leight. in Ann. Mag. Xat. Hist, 

 ser. 3, xix. p. 322 (1867) et Lich. Fl. p. 308; ed. 3, p. 322; 

 Carroll in Journ. Bot. t. p. 258 (1867) ; Cromb. Lich. Brit, 

 p. 89. Specimen not seen. 



Closely allied with L. secedens Xyl., a corticolous species of N.W. 

 France. 



Hdb. On a mica-schist rock on one of the S. Grampians (Ben 

 Lawers, Perthshire). 



15. B. verruculosa Mudd Man. p. 215 (1861) (excl. var. 

 sjpuria). — Thallus effiise, minutely cracked-areolate, the areol* 

 scattered or contiguous, plane or slightly convex, smooth, 

 yellowish-green (K — , CaCl -|- orange-red, medulla I — ) ; hypo- 

 thaUus 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, 0,012—16 mm. long, 0,006—9 mm. 

 thick ; hymenial gelatine deep-blue with iodine. — B. oeellata 

 Koerb. Syst. lich. Germ. p. 224 (1855). Lichen rerruculosu^ 

 Borr. in Engl. Bot. t. 2317 (1812). Lecidea ren-uculosa Borr. 

 ex Hook, in Sm. Engl. Fl. v. p. 174 (1833) ; Leight. Lich. Fl. 

 p. 303 ; ed. 3, p. 315. L. oeellata Floerke ex Flot. in Flora xi. 

 p. 691 (1828) ; Cromb. in Journ. Bot. vii. p. 108 (1869) & 

 Lich. Brit. p. 93. L. ialeida Tayl. in Lond. Journ. Bot. vi. 

 p. 150 (1847). 



Exsice. Mudd n. 186. 



Differs from B. spuria in the colour of the tbaUns and in the 

 larger spores. The hypothecium in both these species is brown in 

 thick section, but paler in thin section. 



Sah. On rocks and flints. — Distr. Somewhat rare in maritime and 

 upland regions.— B. M. Lydd Beach, Kent; Carlton Bank, Cleveland, 

 Yorkshire ; Muggleswick Hill, Durham ; Lamplugh, Cumberland ; 

 Craig TuUoch, Blair Athole, Perthshire ; near Cork ; Blackwater 

 Bridge, Lough Caragh and Dunkerron, Kerry. 



Subsp. prSBponens A. L. Sm. — Thallus determinate, warted- 

 areolate or thinly granular, yellowish-green. Apothecia small, 



