136 LECANO-LECIDBEI [bILIMBIA 



Apothecia sessile, aggregate, at first somewhat plane and thinly 

 margined, at length hemispherical and immarginate, blackish- 

 brown or black ; paraphyses concrete, bluish-green at the apices ; 

 hypothecium brownish-black ; spores ellipsoid or oblong-fusiform, 

 1-3-septate, 0,014-24 mm. long, 0,003-6 mm. thick; hymenial 

 gelatine bluish then sordid-violet with iodine. — Mudd Man. 

 p. 188. Lecidea sahidetorumYar. gyncomista Floerke in Berl. Mag. 

 p. 310 (1808); f. syncomista Cromb. Lich. Brit. p. 71 (1870). 

 L. milliaria var. syncomista Leight. Lich. Fl. p. 339 (1871) ; 

 ed. 3, p. 362. L. syncomista Cromb. in Grevillea i. p. 172 

 (1873). 



Exsicc. Larb. Csesar. n. 82 ife Lich. Hb. n. 315 ; Ci-omb. 

 n. 176. 



Hob. On sandy ground and on soil in crevices of rocks in mari- 

 time and upland tracts. — Distr. Local and scarce in England, 

 Wales, and the Channel Islands ; more frequent on the Grampians, 

 Scotland ; not seen from Ireland.^-5. M. Quenvais, Jersey ; Thetford 

 Warren, Norfolk ; Black Dale, near Buxton, Derbyshire ; Cader Idris, 

 Merioneth; Pentregaer, Oswestry, Shropshire; Achosragan Hill, 

 Appin and I. of Lismore, Argyll ; Craig Calliacb, Loeh-na-gat, Ben 

 Lawers and Craig TuUooh, Perthshire; Craig Guie and Morrone, 

 Braemar, Aberdeenshire. 



Var. perpallescens A. L. Sm. — Thallus squamulose, greyish- 

 white, the squamules paler at the margins. Apothecia pale or 

 pale-brick-red. — Lecidea syncomista subsp. perpallescens Nyl. in 

 Flora Ixii. p. 361 (1879) ; Cromb. in Grevillea Viii. p. 112. 



Differs from the type in the constantly paler thallus and apothecia. 



Sah. On the soil in crevices of calcareous rocks in a maritime 

 district. — B. M. I. of Lismore, Argyll. 



Var. montana A. L. Sm. — Thallus effuse, thin, greyish or 

 whitish, granulose. Apothecia aggregate, immarginate ; hypo- 

 thecium thick, black ; paraphyses dark-bluish-green or black ; 

 otherwise as in the type. — Lecidea vemalis var. montana Nyl. in 

 Act. Soc. Linn. Bord. ser. 3, i. p. 354 (1856). L. sahuletoruni 

 t. montana Nyl. Lich. Scand. p. 205 (1861); Cromb. Lich. Brit, 

 p. 71. L. milliaria var. montana Leight. Lich. Fl. p. 339 (1871) ; 

 ed. 3, p. 362 pro parte. 



Differs from the type in the thinner more finely granular thallus, 

 and the internally blacker apothecia. 



Hob. On the ground incrusting mosses. — Distr. Bare in alpine 

 situations. — B. M. Ben Lawers, Perthshire ; Ben-naboord, Aberdeen- 

 shire. 



7. B. squalida Jatta Syll. Lich. Ital. p. 403 (1900).— Thallus 

 subde terminate, squamulose-concrescent, plicate- wrinkled, the 

 squamules sublobulate, often pulvinate, tawny, or greyish-brown 

 (K — , CaCl — ). Apothecia small, adnate, plane and thinly 

 margined, then convex and immarginate, black ; hypothecium 



