OF GREAT BRITAIN. 427 



A. Spores lineari-elongate or cylindrical, with many transversely 

 aval cells. 



1. G. elegans, (Sni.) pale-cream-colour or greyish- white, thin.' 

 membranaceous, granulate or rugose ; lirellce erumpent, prominent, 

 sessile, oblong or lineari-elongate, simple, straight or curved ; peri- 

 thecium dimidiate or lateral, palmatifid ; epitkecium rimEeform, 

 closed ; proper margin thicl, tumid, prominent, longitudinally fur- 

 rowed ; spores 8, colourless, enveloped in a hyaline membrane, 

 lineari-elongate or cylindrical, with 11-13 transversely oval cells. 



On trees, myrica gale, stone-pine, oak, birch, finest on holly, 

 common. 1807. 



Syn :— Sm. E. Bot. 1812. (1807.) Ach. Syn. 85. Nyl. Prod. 151. Aulacographa 

 elegans, Leight. Br. Graph. 45. Mudd Man. 242. 



Fig- :— E. Bot. t. 1812. Leight. Br. Graph, t. 7. f. 26. 



Exs :— Schaer. 515. Leight. 68. M. & N. 360. Nyl. 69. Mudd 223. Hepp 552. 

 Korb. 286. Bohl. 27. 



Geog. Distrdb :— Europe, France, Switzerland, Germany, Asia, America. 



Bot. Prov :— 1, 2, 3...5..J, 8...10...15...19...26. 



England : — Sussex ! Mr. Borrer. (1807.) Oxfordshire ! Mr. Baxter in hb. 

 Greville. Crafnant ! Shropshire. Rev. T. Salwey. Bardon Hill ! Gracedieu ! 

 Leicestershire. Rev. A. Bloxam. St. Leonard's Forest! Sussex; Tunbridge 

 Wells. Mr. Thompson, near Exeter ; New Forest. Rev. J. M. Crombie. Berrow 

 Wood ! and Holly Bush Hill ! Malvern Hills. Mr. Zees. Thornton Park, 

 Essex. Mr. Piggott. Baysdale ! Yorkshire. Mr. Mudd. Great Ayton ! York- 

 shire. Mr. Dickson. Pembridge ! Herefordshire. Rev. J. F. Crouch. Midsummer 

 Hill , Malvern. Dr. Hott. Haldon, Devon. Mr. Parfitt. Sevenoaks, Brastead, 

 Kent. Mr. Holmes. Haughmond Hill ! Nesseliffe Hill ! Shropshire ! 



Scotland :— West Highlands near Inverary ; in Lorn atBunawe. Rev. J. M. 

 Crombie. 



Ireland : — Pjiverstone !_ and Ballymartle ! co. Cork ; Killarney ! Mr. Car- 

 roll. Doughruagh Mountain ! near Lough Muck ! co. Galway. Mr. Larbalestier. 



Wales : — Abertygwyn, Dolgelley. Dr. Soil. Gloddaeth ! near Conway ; Tor- 

 rent Walk ! near Dolgelley ! Woods opposite Tanybwlch Hotel ! near Capel 

 Curig ; Gwydir Woods ! Bettws-y-coed ! Trefriw ! Edderton ! 



"Spores .009 to .012 in. long, by .002 to .00225 in. broad, t. 4. f. 9." 

 (Mudd.) "Spores .040— 54 mm. long, .007— .010mm. broad." {Nyl.) Spores 

 .055 mm. long, .013 mm. broad. 



forma coacervata, Leight. lirellce heaped one over another in 

 small scattered clusters. 



On holly. Huglith ! near Church Stretton. Mr. Phillips. Holly 

 Park, near Stokesay, Shropshire ! 



forma stellata, Leight. lirellse stellate, distant, scattered. 

 On birch. Sussex ! Mr. Borrer. 



forma parallela, Schssr. lirellas straight, parallel. 

 On cherry. Eaglith ! Shropshire. (1875.) 



2. G. petrina, Nyl, thallus scarcely any visible ; lirella} Mack, 

 linear, simple, suhflexuose ; epithecium rimseform, narrow, margin 

 tumid, longitudinally furrowed, the furrows often white suffused ; 

 perithecium black; spores 8, brownish, 8-12 locular. 



On very wet micaceous rocks, extremely rare. 1876. 



Syn :— Nyl. in Flora 1876. p. 310. 



Bot. Prov :— 26. 



Ireland : — Base of Letter Hill, Connemara. Mr. Larbalestier. (1876.) 



Spores .036— ,50 mm. long, .007— .01,1 nun- broad. Resembling G. elegans. 



