OF GREAT BRITAIN. 437 



Ireland : — Enniskeam ! oo. Cork ; Mangerton, Killarney ; Glenbower Wood 

 Killeagh oo. Cork. Mr. Carroll. (1869.) 



" Spores .017—21 mm. long, .007— .010 mm. broad." (Nyl.) Spores .0115— 

 ,0135 mm. long, .004 mm. broad. 



3. M. vermifera, Leight. thalius obsolete ; apothecia black, very 

 minute, irregularly angular i-oblong, imbedded in the cortical 

 layer, when dry plane and surrounded by a minute upraised jagged 

 margin of the cortical layer, when wet plano-convex, the margin 

 obliterated ; hymenium pale ; paraphyses very delicate and slender, 

 apices pale ; asci lineari-obovate ; spores innumerable, colourless, 

 arranged spirally in- the ascus, cylindrico-fusiform, pointed and 

 arcuate at each end, vermiform, 1 -septate. 



Parasitic on thallus and apothecia of Variolaria discoidea, 

 T. & B. {Pertusaria globidifera, Turn.) very sparingly. 



Stn :— Leight. in Linn. Trans. 2nd ser. 1. 146. 



Fig :— Linn. Trans. 1. c. t. 22. f . 21. 22. 23. 24. 



Bot. Pbov : — 7. 



Wales :— Trefriw ! (1874.) 



Gelatina hymenea I—. Spores ,022 mm. long, .002 mm. broad. 



4. M. Patersoni, Stirtn. whitish or pale, thin or evanescent ; 

 apothecia black, plane, or somewhat convex, small ; hypothecium 

 fuscescent or pale ; paraphyses filiform, somewhat branched, apices 

 interwoven, dark ; spores 4 or 5, colourless, aciculari-cylindrical, 

 pluriseptate or 10-septate, breaking up at the septa. 



On dead bark. 1874. 



Stn :— Stirton in Soott. Naturalist 4. p. 29. (1877.) 

 Bot. Pbov :— 16. 



Scotland :— Ben Breoht, Ar<*yleshire. Mr. Paierson. (1874.) 

 " Spores .04— .06 mm. long, .0025— .003 mm. broad. Hypothecium I slightly 

 blue, hymenium I — , thecse fiilveseent." (Slirt.J 



Tribe XVII. PERIDIEI. 

 Hymenia covered by a b'ack rimuloso-dehiscent peridium. 



I. MYCOPORUM, Plot. 



Thallus thin or obsolete. Apothecia fuscous-black or black, 

 rotundato-difformed or linear, containing many hymenia conjoined 

 as in a common excipulum, but without perithecium. Paraphyses 

 indistinct. Spores 8, oblong, variously septate, septa irregular. 



1. M. sparsellum, Nyl. white, very thin, determinate, or indi- 

 cated by a dilated darkly-limitate white or whitish spot ; apothecia 

 black, rotundate, prominent, rugose, somewhat irregular, internally 

 pale and colourless ; hypothecium colourless ; paraphyses indis- 

 tinct ; spores 8, colourless, ovoid, 1-septate ; gelatina hymenea un- 

 tinged with iodine. 



On holly, very rare. 



Stn :— Nyl. N. Gran. Addit. 575. (1857.) Crombie En. 106. 



Exs :— Lindig 62. 



Geos. Distrib : — N. Granada. 



Bot. Pbov :— 19. 



Ireland : — Cromaglown, Killarney. Mr. Carroll. 



" Spores .018—21 inm. long, .007—8 mm. broad." (Nyl.) 



