178 THE LICHEN-FLOfcA 



Channel Islands :— Jersey ! and all the other Islands. Mr. Larbalestier. 



Attention to the internal nigricant colour of the apothecinm and its chemical 

 reaction with K will prevent confusion with L. subfusca var. cailocarpa which it 

 externally resembles, but in which the internal colour of the apothecium is pale 

 and has chemical reaction K reddish, and also with L. argopholis in which the 

 thallus has a yellowish tinge, and is squainuloso-granulose and the apothecia are 

 fusco-nigrescent. How far L. argopholis is really distinct !rom L. subfusca may 

 be questioned. 



"Spores .003 to .004 in. long, by .00175 in. broad." (Mvdd.) " Spores .010—015 

 mm. long, .006—7 mm. broad." {Nyl.) "Spores .010— .014 mm. long, .006-8 

 mm. broad. Spermatia very long, slender, straightish." (T. M. Fr.) 



Var. subbyssoidea, (Strtn.) nigro-cinereom or almost black, granu- 

 lose, effigurate, hypothallus white, subbyssoid. 

 On rocks, rare. 1875. 



Stn:— Stirton in Trans. Glasgow Soc. Nat. p. 85. (1875.) 



Bot. Prov : — 15. 



Scotland : — Near Blair Athole. Dr. Stirton. (1875.) 



24. L. leucophoea, (Fit.) pallido-cinereous, tartareous, disperso- 

 verrucoso-areolate, areolae tumid, hypothallus black ; apothecia ap- 

 pressed or sub-innate, livido-fuscous, plane, frequently congregated, 

 margin thin, fuscescent, ultimately excluded ; hypothecium pale ; 

 spores 8, colourless, ellipsoid, simple ; thallus K faint yellow, C 

 faint yellow. 



On sub-alpine rocks, not common. 1866. 



Stn :— Korb. S. L. G. 194. (1855.) Leight. Not. Lich. No. xv. (1866.) Crombie 

 Enum. 51, 



Exs :— Crombie 63. 



Geog. Distmb: — Europe. 



Bot. Prov.— 5...7...15. - 



England :— Spout Valley ! Long Mynd, Shropshire. 



Scotland : — Kincardine, Ben Lawers. JRev. J. M. Crombie. 



Ireland : — Near Kylemore and Doughruagh Mountain ! co. Galway. Mr. 

 Jjarbalestier. 



Wales : — Llyn Aran ! Mynydd-y-Gader ! and generally and abundantly on 

 north enscarpment ! and also in Llyn-y-Cae ! on the south side of Cader Idris ! 

 (1866). Crib Goch ! Snowdon ! Pass of Llanberis ! Aran Mowddwy ! Cwm 

 Cwlyd 1 Nant Gwynant I - 



Spores .014 — ,015 mm. long, .008 mm. broad. 



Var. conglobata, (Flot.) apothecia convex, difformed and tidier cw- 

 late, margin obliterated. 



On quartzose boulders in alpine places. 1872. 



Stn :— Flot. in Flora 1828. p. 564. Crombie in Journ. Bot. n. s. 1. 134. 

 Geog. Distblb:— Europe. 

 Bot. Pkov : — 15. 



Scotland : — Summits of Ben-y-gloe and Cairn Gowar, Blair Athole very 

 sparingly. JRev. J. M.Crombie. (1872.) 



25. L. leueophceiza, (Nyl.) similar to L. leucophcea, with biato- 

 rine apothecia and scarcely any gonidia present within the peri- 

 thecium, but the gelatina hymenea not blueish with I or only the 

 thecse thus coloured ; thallus K f. yellowish. 



On micaceo-schistose boulders. 



Stn :— NyL in Flora 1874. p. 308. 

 Bor. Pbov :— 15. 



Scotland :— Morrone, Braemar and Hill of Ardo near Aberdeen. Rev. J. M. 

 Crombie. (1874.) 

 " Spores .010—13 mm. long, .006—8 mm broad." (Nyl.) 



