OF GREAT BRITAIN. 439 



Geog. Distrib : — France. 



Bot. Prov :— 15. 



Scotland :— Oraig Guie, Braemar. Bev. J. M. Crombie. 



"Spores .018—25 mm. long, .011 — 16 mm. broad." (Nyl.) 



Series VI. PYRENODEI. 

 Fructification in closed receptacle. 



Tribe XVIII. PYRENOCARPEI. 



Thallus various, peltate, squamulose, areolate, continuous, 

 hypophleeodal or evanescent. Apothecia pyrenodine. hymenium 

 enclosed in an entire or dimidiate black perithecium with an apical 

 poriform epithecium. 



I. THELOCARPON, Nyl. 



Thallus thin, orustaceous. Apothecia granuloso-verrucseform, 

 ostiole punctiform. Nucleus gelatinous, colourless. Perithecium 

 sub-ceraceous. Paraphyses slender, fleiuose. Asci ventricoso- 

 fusiform. Spores innumerable, minute, ellipsoid, colourless, with 

 an indistinct nucleus at each extremity. 



1. T. Laureri, (Flot.) brownish-grey, crustaceous, somewhat 

 furfuraceous, thin or evanescent ; apothecia scattered, minute, 

 granuloso-verrucose, of a ci'imie-yellow-colour, ostiolum slightly de- 

 pressed, inconspicuous ; spores numerous, minute, colourless, 

 ellipsoid, obsoletely polari-nucleolate. 



On larch rails, rare, 1864. 



Stn :— Nyl. Lioh. Alger, p. 338. (1854.) Leight. in Ann. and Mag. N. Hist. 

 Dec. 1864. 



Fig :— Ann. and Mag. Nat. Hist. 1864. t. 9. f. 1. 2. 3. 4. 5. 



Exs :— Leight. 351. 



Geog. Distrib : — Europe. 



Bot. Prov ; — 5. 



England : — Arkoll Hill ! Shropshire. Mr. W. Phillips. Middletown ! Shrop- 

 shire. (1864) ; Cemetery near Shrewsbury ! Stableford ! near Bridgnorth, 

 Shropshire. 



Spores .006 mm. long, .003 mm. broad. 



2. T. epiihallinum, Leight. parasitic on the thallus of Bceomyces 

 rufus ; apothecia, scattered, minute, granuloso-verrucose, flavo-vires- 

 cent ; spores numerous, minute, colourless, oblong or cylindraceo- 

 dblong. 



Parasitic on Bseomyces rufus, very rare. 1864. 



Stn :— Leight. in Ann. and Mag. Nat. Hist. July 1866. Nyl. in Flora Oct. 

 1866. p. 420. 

 Geog. Distrib : — Europe. 

 Bot. Prov :— 5. 



England :— Stiperstones Hill ! Shropshire. (1864.) 

 Spores .006—7 mm. long, .0020— .0025 mm. broad. 



3. T. intermediellum, Nyl. yellowish-green, thin, often evanes 

 cent ; apothecia yellowish-green, small, scattered or crowded, 

 globoso- depressed and umbilicate; spores innumerable, very minute, 



