(JEW BRITISH LICHENS. 01 



On weathered quartzose stones on the summit of Cairn Gowar, 

 Blair Athole (Crombie, August, 1871). Allied to L. co lindens, 

 Nyl. 



11. Lecidea subgyratula. Nyl.— Thallus blackish, very thin, 

 opaque, sub-rimose, apothecia black, gyroso- rugose, minute ; spores 

 8 n®, 0,012-J6 ni.iii. long, 0,008-10 m.m. thick; epithecium 

 brownish, paraphyses slender, not discrete, hypothecium blackish ; 

 hymeneal gelatine pale bluish, and then tawny wine-red with 

 iodine. 



On stones on the ground near the summit of Morrone (Crombie, 

 August, 1872). Looks like Lecanora simplex, but is allied to 

 Lecidea wmbonatula, Nyl. 



12. Lecidea confeederans. Nyl. — Th alius scarcely any visible ; 

 apothecia black, plane, obtusely margined, verrucoso-congested 

 (verruca composed of 20-30 or more apothecia), within blackish ; 

 spores 8 n«, oblong, simple, 0,010-11 m.m. long, 0,003-4 m.m. 

 thick ; paraphyses moderate or thickish, clavato- incrassate and 

 bluish-black or greenish-blue at the apices ; hypothecium thick, 

 brownish black (K purplish). 



On quartzose boulders, Morrone, Braemar (Crombie, August, 

 1872). A very distinct species. 



13. Lecidea delimis. Nyl, — Thallus dark-greyish, verrucoso- 

 granulate or rugose, moderate, hypothallus subfimbriated, infuscate, 

 limiting the thallus ; apothecia black, at length convex, immargi- 

 nate, greyish-suffused, within concolorous ; spores 8 nse, colour- 

 less, oblong, 3-septate, 0,015-18 m.m. long, 0,004-5 m.m. thick ; 

 epithecium granulose, paraphyses moderate, soft, hypothecium 

 thick, black ; hymeneal gelatine tawny-wine-coloured or somewhat 

 reddish with iodine. 



On granite rocks, Jersey (Larbalestier). Looks like an Ope- 

 grapha, but belongs to the section of Lecidea premnea. 



14. Lecidea subvixidis. J\'yl.— Thallus greenish or dark-green, 

 somewhat shining, rugulose ; apothecia black, minute, plane, dis- 

 tinctly margined, within whitish ; spores 8 na?, colourless, oviform, 

 ] -septate, 0,011-16 m.m. long, 0,005-7 m.m thick; epithecium 

 brown, paraphyses moderate, hypothecium colourless ; hymeneal 

 gelatine bluish, then tawny red with iodine. 



On siliceous stones, Jersey [Larbalestier). Belongs probably to 

 the section of L. arthoniza. 



15. Lecidea lutulata. Nyl. — Thallus yellow-ochraceous, thin, 

 leprose or indistinct ; apothecia black, convex, immarginate, within 

 concolorous; spores 8 nse, colourless, ellipsoid or oviform, simple, 

 0,007-9 m.m. long, 0,003-4 m.m. thick ; paraphyses not discrete, 

 epithecium bluish, hypothecium thick, brownish-black ; hymeneal 

 gelatine bluish, and then tawny wine-red with iodine. 



On maritime rocks, Jersey (Larbalestier). Belongs probably to 

 the section of L. dispansa, Nyl. 



