48 LECANO-LECIDEBI [lECIDEA 



somewhat prominent, convex, simple or conglomerate and 

 verrucose, brown, dark within ; paraphyses coherent ; epithecium 

 colourless ; hypothecium brown ; spores ellipsoid, 0,006-9 mm. 

 long, 0,0035-45 mm. thick ; hymenial gelatine tawny-wine-red 

 with iodine. — Leight. Lich. Fl. ed. 3, p. 247. 



Closely allied to L. hotryocarpa Nyl., which does not occur in 

 Great Britain, externally agreeing with it in the thallus and apothecia. 

 The thallus looks as if minutely appresso-squaniulose, and, as 

 Nylander states, the hypothecia are confluent in one common brown 

 hypothecium in each glomerule of the apothecia. British specimen 

 not seen. 



Hah. On schistose rocks in a mountainous district. — Distr. 

 Extremely local and scarce on the S. Grampians, Scotland (Ben 

 Voirlich, Perthshire). 



72. L, grumosa Leight. in Trans. Linn. Soc. ser. 2, i. p. 242, 

 t. xxxiii. figs. 7 & 9 (1878). — Thallus evanescent. Apothecia 

 reddish-brown, minute, scattered, adnate, sessile, somewhat con- 

 vex, the slight margin soon obliterated ; hypothecium colourless ; 

 hymenium yellow, grumous ; paraphyses indistinct, colourless ; 

 spores oblong, with granular contents, 0,013-15 mm. long, 

 0,007-9 mm. thick ; hymenial gelatine blue then yellowish with 

 iodine. — Leight. Lich. Fl. ed. 3, p. 309. Specimen not seen. 



Hab. On pine bark, rare. Collected by Larbalestier at Ballina- 

 hinch. Gal way. 



73. L. callicarpa Larb. ex Leight. Lich. ¥\. ed. 3, p. 266 

 (1879). — Thallus pale- whitish sulphur-coloured, pulverulent, 

 granular, effuse (K — , CaCl — then reddish). Apothecia pallid 

 flesh-coloured, minute, clustered or scattered, convex, somewhat 

 pruinose, immarginate ; hypothecium colourless ; paraphyses 

 coherent, apices colourless ; spores not seen. Specimen not 

 seen. 



Hab. On damp perpendicular rocks at Glencorbot, near Kylemore, 

 Gal way. 



74. L. leptostigma Nyl. in Flora li. p. 344 (1868).— Thallus 

 subdeterminate, somewhat thick, rimulose, greyish-white (K — , 

 CaCl — ). Apothecia small, innate, thin, gregarious, brownish- 

 black ; paraphyses moderate, thickened upwards, sordid-yellow 

 towards the apices ; hypothecium pale-yellowish ; asci cylindrical ; 

 spores globose or globoso-ellipsoid, uniserate, 0,005-9 mm. in 

 diameter ; hymenial gelatine not tinged with iodine.^ — Cromb. 

 in Journ. Bot. vii. p. 49 (1869) & Lich. Brit. p. 76 ; Leight. Lich. 

 Fl. p. 356 ; ed. 3, p. 385. 



A rather obscure plant, differing from the other species of this 

 sub-section in the form of the spores and the other characters 

 given. The thallus, however, in all probability is not proper. In 

 this case, and from the absence of any reaction of the hymenial 



