92 LECANO-LECrDEEI [lECIDEA 



and the apothecia regular. From its allies it may be recognized 

 by the wnnkled (gyrophoroid) character of most of the apothecia. 

 The not imfrequent spermogones have the spermatia shortly acicular, 

 straight, 0,007-9 mm. long, about 0,001 mm. thick. 



Soft. On schistose rocks and boulders in mountainous districts. — 

 Distr. Only sparingly in N. Wales and on the Central Grampians, 

 Scotland. — B. M. Ben Lawers and Ben VracMe, Perthshire. 



162. L. atrofuscescens Nyl. ia Flora xlix. p. 371 (1866).— 

 Thallus indeterminate, flattened, areolate-diffract, subopaque, 

 greyish^ or brownish-black (K—, CaCl— , medulla I + bluidi); 

 hypothallus black, only here and there visible. Apothecia 

 adnate, plane, at length slightly convex, thinly margined, often 

 subangulose, black ; paraphyses slender, soft, somewhat irregular ; 

 epithecium brownish ; hypothecium colourless or brownish ; 

 spores ellipsoid, 0,018-20 mm. long, 0,009-11 mm. thick; hy- 

 menial gelatine bluish then partly wine-red with iodine. — Cromb. 

 Lich. Brit. p. 83 ; Leight. Lich. Fl. p. 286 ; ed. 3, p. 292. 



Intermediate between L. fuscoatra and L. griseoatra, but readily 

 distinguished from these and the aUied species by the larger spores. 

 The thaUns generally spreads somewhat extensively over the sub- 

 stratum, though at times interruptedly when associated with other 

 lichens. In our specimens the apothecia are numerous, crowded but 

 distinct, and usually angulose. The spermogones, here and there 

 visible, have the spermatia bacillar, 0,007-9 mm. long, 0,001 mm. 

 thick (fide Nyl. in Flora Ixx. p. 134 (1887) ). 



JSab. On rocks and boulders, schistose and greenstone, in upland 

 situations. — Distr. Seen only from two locaUties in Scotland. — B. M. 

 Sing's Park, Stirling ; Ben Lawers, Perthshire. 



163. L. relicta Stirton in Trans. Glasgow Soc. Nat. 1873, 

 p. 89. — Thallus greyish-black, wrinkled, almost granular. Apo- 

 thecia, black, small, adnate, plane, obtusely marginate becoming 

 convex, immarginate and rugose ; hypothecium brownish-black ; 

 paraphyses few, slender, distinct, the apices clavate, brown ; 

 spores oblong, 0,009-13 mm. long, 0,005-6 mm. thick ; hymenial 

 gelatine bluish then wine-red with iodine. — Leight. lich. Fl. 

 ed. 3, p. 277. Specimen not seen. 



Sai. On rocks. Collected by Dr. Stirton at Blair Athole, Perth- 

 shire. 



164. L. uliginascens Stirton in Scott. Nat. iv. p. 164 (1877). 

 — ^Thallus brownish-black, minutely granular, efiiise. Apothecia 

 black, plane or subconvex (internally K + violet) ; hypothecium 

 brownish-black ; paraphyses few, irregular, slender ; spores 

 oblong, 0,010-13 mm. long, 0,006-7 mm. thick ; hymenial gela- 

 tine pale-blue then dark-wine-red with iodine. — Leight. Lich. 

 Fl. ed. 3, p. 278. Specimen not seen. 



Hob. On turfy earth. Collected by Dr. Stirton near Garve, Boss- 

 shire. 



