LFXANORA.] LIXAXO-LKCIDKEI. 457 



very ydung state, thoufrh in alpine habitats it is more or kss pprsistent. 

 The spennogones are frequent, prominent, airglomerate, black, and look 

 almost like foreign apothecia. On tlie tliallus there is occasionally a 

 parasitic Endococcus afterwards to be described. 



Hctb. On exposed rocks and boulders, gi-anitic and schistose, rarely red 

 sandstone from upland to alpine situations.^ — Distr. (leneral in the more 

 mountainous regions of Great Britain, abundant on the (iranipians, 

 Scotland; apparently very rare in Ireland; not seen in the Channel 

 Islands. — B. 31. : Pew Tor, Dartmoor, Devonshire; Clee Hills, Shrop- 

 shire; Moel-y-Golfa, Montgomery.shire ; Cader Idris, Merionethsliire; 

 Peumaenmawr, Trefriw and Moel Siabod, Carnarvonshire ; Kildale 

 Moor and Dent, Yorkshire ; Teesdale, Durham ; Gunnerton Crags, 

 Northumberland. North Berwick Law, Berwickshire ; Achosragan ilill 

 and Ben Cruachan, Argyleshire ; Ben Lawers, Ben Vrackie, and Birnam 

 Hill, Perthshire ; Katelaw, Clova, Forfarshire ; Hills at Nigg, Aber- 

 deenshire ; Lochnagar, 3Iorn)ne, and Glen Callater, Braemar ; Ben 

 Nevis, Inverness-shire ; Hills of Applecross, Iloss-shire. Co. Wicklow. 



Form laevigata Johns, ex Cromb. Grevillea, xix. (1891) p. 60. — 

 Thallus areolato-diffract, substramineous ; the areulce smooth, equal. 

 Apothecia small, depressed. 



Differs in the characters given, and may be a good variety. The 

 specimen seen is too fragmentary, however, for deciding the point. 



Hab. On rocks in an upland district. — Distr. Extremely local and 

 scarce in N. England. — B. M. : Bowness Knolt, Ennerdale Lake, Cum- 

 berland. 



Tar. jo. subfestiva Nyl. in Cromb. Lich. Brit. (1870) p. 57. — 

 Thallus thickish, vcrrucoso-grauiilate, yellow-greyish. Apothecia 

 small, plane, usually more or less aggregate, rusty-red, biatoroid, 

 the proper margin thin, often intiexed, paler red. — Cromb. Linn. 

 ISoe. Journ. Bot. xi. p. 490. 



Differs in the colour of the smaller apothecia which look almost like 

 those of L. ferruyinea var. festiva, for which, but for the different 

 thallus, the plant might readily be mistaken. It is only sparingly fei-tile, 

 the apothecia being scarcely prominent. 



Hab. On schistose boulders in a mountainous district. — Distr. Found 

 onlj' very sparingly on one of the N. Grampians, Scotland. — B. M. : 

 Morrone, Braemar, Aberdeenshire. 



L. Apothecia urceolato-zeorine ; spores distinctly 3-septate ; hyme- 

 nial gelatine bluish \\ith iodine. Spermogones unknown. 



153. L. rubra Ach. Lich. Fniv. (1810) p. 389.— Thallus effuse, 

 thin, granuloso-pulverulent, white or glaucous-white (K — , CaCl — ) ; 

 hypothallus whitish, little visible. Apothecia moderate, adnate, 

 concave, rosy-red or reddish flesh-coloured, occasionally slightly 

 pruinose, the thalline margin rugoso-crenulate ; spoi'es oblong or 

 oblongo-ellipsoid, 3-septate, 0,016-23 mm. long, 0,005-8 mm. thick ; 



