OF GREAT BRITAIN. 235 



Channel Islands :— Quenvais, Jersey. Mr, Larbalestier. 



'• Spores .014 to .021 in. long, by .005 to .009 in. broad." (Mudd.) " Spores 

 .042—75 mm. long, .020—38 mm. broad." (Nyl.) " Spores .042—90 mm. 

 long, .020—38 mm. broad, Spores 8=5.034—60 mm. long, ,016—30 mm, broad." 

 (T. M. Fr.) 



23. P. nolens, Nyl. cinereous, smooth, areolato-ritnose, determi- 

 nate ; apothecia innate, without thalline prominence ; ostiola black, 

 plane, rotundate, oblong or deformed, 2 or more approximate, 

 colourless within; spores 8, colourless, ellipsoid, simple; thecse 

 cylindrical, intensely blue with, iodine. 



Externally much like Lecanora cinerea. 

 On maritime basaltic rocks, rare. 1*864. 



Stn :— Nyl. in Flora 1864. p. 489. 



Geoq. Distbib :— Europe. 



Bot. Pbov :— 30. 



Ireland : — G-lenarm, co. Antrim ! Adm. Jones. Lough Feagb ! Connemara, 



Spores .026-.027 mm. long, .013— .014 mm. broad. 



24. P. xanthostoma, (Smmrf.) milk-white, smooth, thin, verrucce 

 subglobose, somewhat depressed above, 2 or S concrescent ; apothecia 

 1 or 2 in each thalline verruca ; ostiola depressed, pale or pallida- 

 lutescent; spores 4, colourless, ellipsoid, simple. 



On Erica tetralix. Very rare. 



Syn : — Porina xantlwstoma, Smmrf. in V. Ak. H. 1823. p. 115. Endocarpnn, 

 Smmrf. Lapp, 136. Nyl. Seand. 182. 



Exs :— Smmrf. Norveg. 142. T. M. Fr. 74. 



G-eoo. Distrib :— Norway. 



Bot. Prov :— 15. 



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



" Spores .060— 76 mm. long, .034— 40 mm. broad " (Nyl) "Spores .055— 

 76 mm. long, .0032—40 mm. broad. IT. M. Fr.) 



25. P. inquinata, (Ach.) cinerascent, areolato- or verrucoso- 

 rimose ; apothecia innate, one or more in each areola; ostiola black, 

 nearly plane, variously flexuoso-deformed and rotundate, margin 

 thin, irregular, persistent, paler ; spores 8, colourless, rotundo- 

 ellipsoid, simple. 



On rocks, very rare. 1876. 



Stn :— Ach. L. U. 353. (1810.) T. M. Fr. L, Seand. 311. 

 Geoo. Distrib :— Sweden, Norway. 

 Bot. Prov :— 26. 



Ireland : — Lettermore ! Connemara. Mr. Larbalestier. (1876.) 

 " Spores .025— 30 mm. long, .014 — 18 mm. broad. Thecas alone I blue." 

 [T. M. Fr.) Spores .034 mm. long, .021mm. broad. Paraphyses distinct. 



26. P. incarnata, Leight. creamy-white, thin, tartareous, 

 effuse, smooth, plane, minutely rimuloso-diffract. (K — C — .) ; 

 apothecia single, of a waxy appearance, paler than the thallus, pro- 

 minent, sessile, depresso-alobose, variable in size according to age, in 

 maturity large ; ostiolum yellowish-flesh-col,jur, lecanoroid, at first 

 small and round, poriform, eventually dilated and urceolate, sur- 

 rounded by a broad, thick, pale, waxy, thalline margin ; hymenium 

 in section ceraceo-gelatinose, flesh-coloured ; paraphyses slender, 



