OF GREAT BRITAIN. 263 



within, medulla of thallus underneath vermillion-red ; hypothecium 

 thin, pale-yellowish ; spores 1, colourless, ellipsoid, simple, very 

 large, minutely granulose, epispore broad ; paraphyses indistinct, 

 apices thick, bluish-black ; asci and epispore blue with iodine. 

 On trees and rocks, frequent. 



Syn:— Linn. Sp. Plant. No. 4. (1753,) Ach. Syn. 19. Nyl, Scand, 246. Mudd 

 Man. 213. 



Pig :— E. Bot. 155. Hffm. PI. L. t. 41. f . 1. Hepp Sporen t. 56. f. 483, 



Exs :— Eellm. 204. Hepp 483. M. & N. 842. Schasr. 231. Mudd 184. Anzi It, 

 S. 263. Leight. 307. Crombie 94. Eeich. & Sohub. 52. 



Geog. Distrib : — Scandinavia, E. Lapland, Sweden, Switzerland, Pyrenees, 

 Italy, 



Bot. Prov:— 2.. .5.. .7, 8.. .10, 11, 12.. .14, 15...19...23. 



England : — Cromford Moor near Matlock. Sir J. E. Smith. Carlton Bank ; 

 Baysdale ; Kildale, Ingleby Park ! Yorkshire. Mr. Mudd. Hay Park ! Here- 

 fordshire. Rev. T. Salwey. Sussex. Mr. Borrtr. Cumberland ! Mrs. Stamger. 

 Brimham Bocks near Bipon. Mr, Brunton. Teesdale, Durham. Rev. J. Harri- 

 man. Hedgehope and Cheviot, Northumberland. Mr. Winch. Murton Crags, 

 Northumberland. Dr. G. Johnston, Black Edge near Buxton. Dr. Soil. Craig- 

 forda ! Shropshire. 



Scotland :— Craig Vinean ! Craig-y-Barns ! Dunkeld ! Dr. Lindsay, Bal- 

 muto, Pentland Hills. Dr. Oreville. Ellin ; Crianlarich. Dr. Holl. 



Ireland : — Lough Bay near Dublin. Mr. Templeton. Turk Mountain, Kil- 

 larney. Mr. Carroll. 



Wales:— Cader Idris. Dr. Holl. Llyn Bodlyn. Mr. Holmes, Barmouth ! Cwm 

 Bochlwyd ! 



" Spores .015— .018 in. long, .007 — .008 in. broad. Spermogonia very minute, 

 black, punctiform, immersed. Spermatia cylindrical, straight." (Mudd.) 

 '' Spores 0.070 — 100 mm. long, 0.028 — 40 mm. broad. Spermatia shortly acicu- 

 lar, straight, 0.008-10 mm. long." ( T. M. Fr.) " Spores 0.070-0.0100 mm. 

 long, 0.028—38 mm. broad." (Nyl.) Spores .021—0235 mm. long, .01— .011 

 mm broad. Epispore .002 mm. broad. Spermatia .006 mm. long, .001 mm. 

 broad. There is frequently an uniform sanguineous stratum below the gonidia 

 in the thallus, whioh i state is i. plethorica, Norm. Spec. loc. nat. 117, polyerythrina, 

 Nyl. in hb. Eenn. 



Var. affinis, (Schser.) differs from the type chiefly in the absence 

 of the sanguineous stratum and in having only one large colour- 

 less spore. 



On mosses, in alpine localities, rare. 



Syn :— Schaer. Enum. 132. Nyl. Scand. 246. 



Exs :-Schser. 629. Zw. 336 A. 



Gbog. Distrib :— Scandinavia. 



Bot. Prov :— 15. 



Scotland : — Morrone, Braemar. Rev. J. M. Crombie. 



Spores .06 mm. long, .038 mm. broad. Epispore .003 mm. 



Var. melina (Krphb.) differs from the type in the absence of the 

 sanguineous stratum, but has two colourless spores. 

 On bark, rare. 1871. 



Syn :— Kremplb. in Nyl. Nov. Gran. 2. p. 72. (1864.) Nyl. Lapp. Or. 166. L, 

 didymospora, Stirton in Trans. Glasg. Nat. and in Greviflea 2. 60. T. M. Fr. 

 Lich. Scand. 480. 



Geog. Distrib :— Nova Granada, Scandinavia, 



Bot. Prov :— 15. 



Scotland :— Ben Lawers. Dr. Stirton. (1871.) 



" Spores 0.057—77 mm. long, 0.034—48 mm. broad. Spores 0.052—64 mm. 

 long 0.034—44 mm. broad." (Nyl.) Spores 0.051—68 mm. long, 0.028—44 

 mm. broad. (T. M. Fr.) 



64. L. enteroleuca, Ach. albido-virescent, crustaceous, granulose, 

 areolato-rimulose, sub-furfuraceoits, or evanescent, (K yellow G — ) ; 



