BUKLLiAJ lecideace-;e 1 73 



sublimate, uneven, immarginate ; spores 0,015-17 ram. long, 

 0,008-10 mm. thick.— Lecidea ocellata subsp. prseponens Nyl. in 

 Mora li. p. 347 (1868); Cromb. in Journ. Bot. vii. p. 108 (1869) 

 & Lich. Brit. p. 94. L. verruculosa var. praeponens Leight. Lich. 

 Fl. p. 304; ed. 3, p. 316. 



Hab. On rocks in maritime regions. — B. M. Near Cove and Nigg, 

 Kincardineshire (the only localities). 



16. B. saxatilis Koerb. Syst. Lich. Germ. p. 228 (1855).— 

 Thallus thickish, unequal, cracked, faintly yellowish-white or 

 greyish (K — , CaCl — ). Apotheoia black, minute, scattered, 

 innate, then sessile, plane, the marghi entire, sometimes promi- 

 nent ; hypothecium blackish-brown ; paraphyses subcoherent, 

 capitate and blackish-brown at the apices ; spores ellipsoid, 

 dark-brown, 0,009-14 mm. long, 0,004-6 mm. thick; hyraenial 

 gelatine blue, the asci wine-red but blue at the tips, with 

 iodine. — -Mudd Man. p. 216. Gallcium saxatile Schser. in Meis- 

 ner's Nat. Anz. no. 5, 1821, p. 35 k Enum. p. 166. Lecidea 

 saxatilis Hepp Flecht. Eur. n. 145 (1853); Cromb. Lich. Brit, 

 p. 89 ; Leight. Lich. Fl. p. 303 ; ed. 3, p. 315. 



Approaching B. verruculosa, but distinguished by the unequal, 

 thicker thallus, and by the more prominent apothecia. 



Hah. On rocks. — Distr. Rare in maritime and upland districts in 

 Wales, E. Scotland and in N. and W. Ireland.— 5. M. Nigg, Kin- 

 cardineshire. 



17. B. ryssolea A. L. Sm.— Thallus whitish-grey, thick, tar- 

 tareous, cracked-areolate, the areohe plane or somewhat convex, 

 irregularly wrinkled (K -|- yellow, then red), limited by the 

 black hypothallus. Apothecia numerous, rather large, prominent, 

 blackish-brown, rusty, with a thick, paler margin ; hypothecium 

 thick, blackish-brown ; paraphyses indistinct, thickened and 

 blackish-brown at the apices; spores dark-brown, 0,016-17 mm. 

 long, 0,007—8 mm. thick ; hymenial gelatine pale-dirty-Vjlue with 

 iodine. — Lecidea ryssolea Leight. in Trans. Linn. Soc. ser. 2, i. p. 

 237 (1878) ct in Lich. Fl. ed. 3, p. 324. Specimen not seen. 



Hah. On Caradoc sandstone rocks. — Distr. Rare in S.W. Wales 

 (Fort Hill near Fishguard, Pembrokeshire). 



18. B. saxorum Massal. Kic. Lich. p. 82 (1852).— Thallus 

 thin, minutely cracked-areolate, plane, dirty-yellowish- white 

 (K -f- yellow, CaCl + red), limited by the black hypothallus. 

 Apothecia numerous, scattered, sessile, plane, black, the margin 

 thick, rather paler ; hypothecium black or blackish-brown ; para- 

 physes slender, capitate, the epithecium dull-brown ; spores 

 elliptical or suf)ovoid, 0,013-17 mm. long, 0,006-8 mm. thick; 

 hymenial gelatine blue then yellowish-brown with iodine. — 



