OF GREAT BRITAIN, 391 



1. X. parallela, (Ach.) thallus an elongated whitish spot; 

 apothecia black, narrowly lanceolato-linear, erumpent, innate, plane 

 or somewhat concave, parallel, internally cinerascent ; spores 8, 

 colourless, ellipsoid, simple ; paraphyses distinct, slender. 



On old wooden posts, &c rare. 



Stn ;— Nyl. Scand. 250. (1861.) Crombie En. 95. Ovegrapto paraMcla, Ach. 

 L. V. 253. (1810.) 



Exs :— M. & N. 656. Fellm. 205. Kb'rb. 257. Anzi Langob. 346. Am. 244. 



Geog. Disteib : — Belgium, Switzerland, Bavaria, Austria, Hungary, Italy, 

 E. Lapland. 



Bot. Pbov : — 15. 



Scotland :— Glenf alloch ! Dr. Soil. Pass of Killiecrankie ; Glen Dee, 

 Braemar. Rev. J. M. Crombie. Brechin ! Mr. Cooke. 



" Spores .011—16 mm. long, .005—7 mm. broad." (Nyl.) " Spores .011—17 

 mm. long, .005—7 mm. broad." (T. M. Fr.) Spores .012— .014 mm. long, .006 

 mm. broad. 



var. pollens, Nyl. apothecia pallescent. 



On old pales. 1872. 



Syn : — Nyl. Scand. p. 250. Crombie in Journ. Bot. n. u. 2. 135. 

 Geog. Disteib : — Scandinavia. 

 But. Pbov :— 15. 



Scotland : — Ben Lawers. Pass of Killiecrankie, Blair Athole. Rev. J. M. 

 Crombie. (1872.) 



f. elliptica, Nyl. apothecia shorter, oblong, or diff'ormed. 



Syn :— Nyl. in litt. Crombie 1. c. 



Bot. Pbov :— 15. 



Scotland :— Pass of Killiecrankie, Blair Athole. Rev. J. M. Crombie. (1872. 



2. A. laricicola, Nyl. greyish-white, very thin, effuse, or evan- 

 escent ; apothecia black, minute, superficial, oblong or slightly flexu- 

 ose, irregularly scattered, at length somewhat explanate, with an 

 evanescent margin, internally whitish ; hypothecium brown ; spores 

 8, colourless, ellipsoid, simple ; paraphyses none ; gelatina hymenea 

 I tawny vinous-red. 



On larch trees near the base, rare. 1874. 



Syn :-Nyl. in Flora 1875. p. 13. 



Exs :— Crombie 97. 



Bot. Peov :— 15. 



Scotland : — On a single tree in Lawers' Glen ! Ben Lawers. Rev. J. M. 

 Crombie. (1874.) 



" Spores .0012— 15 mm. long, .007— 8 mm. broad." {Nyl.) Spores .013 mm. 

 long,. 006 mm. broad. 



3. X. scaplwidea, Strn. albo-macular or obsolete ; apothecia 

 fuscous, prominent, oblong, roundish, or even flexuose, small ; epi- 

 thecium rimseform, margin prominent, rounded; hypothecium 

 colourless ; spores 8, colourless, ellipsoid, simple, moderate ; para- 

 physes indistinct ; gelatina hymenea I obsoletely caerulescent, then 

 fulvescent ; gonidia large, green, interspersed amongst the fibres of 

 the wood. 



On decorticated alder. 1874. 



Syn :— Stirton in Grevillea 3. p. 35. (1874.) 



Bot. Pkov : — 15. 



Scotland : — Near Dalwhinnie and Grantown. Dr. Stirton. (1874.) 



" Spores .012— .016 mm. long, .006—008 mm. broad." (Stirt.J 



