OF GREAT BRITAIN. 



401 



Oxford. Mr. Larbalestier.'Jjo^ingtoa ! Haughmond Hill ! Dorrington ! Shrop- 

 shire. 



Scotland : — Craig Tullooh. Blair Athole ! Bev. J. M. Cromhie. 



Ireland : — North of Ireland I Miss Hutchins. Colin Glen ! Brett's Glen ! 

 Belfast. M r. Thompson. Browne's demesne, Biverstown near Cork ! Mr. 

 Carroll. 



Wales : — -Capel Curig I Edderton ! Montgomeryshire ; Gwydir Woods ! 

 Bettws-y-coed. Trefriw ! Craig Breidden ! 



Spores .019 mm. long, .005 mm. broad. 



10. O. confluent, (Ach.) greyish-green, effuse, very thin, often 

 obsolete ; lirellm sessile, simple, black, opake, thick, cylindrical, 

 straight, or oftener curvate and contorted, very rarely solitary, 

 scattered, generally crowded or conglobate ; epithecium narrow, 

 rimEeform, sub-dilatate in age ; margin at first rotundate, indexed, 

 presently acute ; paraph'yses septate, branched ; spores 8, colour- 

 less, elongato-oval or soleaeform, 3-septate. 



On sub-alpine rocks, rare. 



Stn : — O. lithyrga, var. confluens, Ach. L. TJ. p. 247. (1810.) Stizb. Stein. Opeg. 

 22. 

 Fig :— Stizb. Stein. Opeg. t. 2. f. 1. a— m, 

 Exs :— Nyl. 144. Anzi Etr. 36. Kabh. 339. 

 Geog. Distreb :— Switzerland. 

 Bot. Peov:— 1, 2.. .6.. .15.. .19.. .26. 



England : — St. Michael's Mount, Penzance, and near Hastings. Mr. Holmes. 

 Scotland :— Craig Tulloch. Bev. J. M. Gromhie. 



Ireland : — Southern Counties. Mr. Carroll. Lettermore ! Mr. Larbalestier. 

 Wales : — Goodwick Bay ! Pembrokeshire. 



11. O. saxicola, Ach. dirty-white or rusty-brown ; lirellm oblong 

 or ovate, deformed, short, obtuse, variously branched, rounded or 

 triquetrous, wider at one extremity ; epithecium rimseform more or 

 less expanded ; proper margin tumid, round and incurved ; spores 

 8, colourless, lineari-oblong or lineari-clavate, rounded at each 

 extremity, 3-septate. 



On rocks, frequent. 



Syn :— Ach. Syn. 71. (1817.) Nyl. Scand. 254. Stizb. Stein. Opeg. 23. O. 

 rupestris, Pers. Ust. Ann. xi. 20. Leight. Br. Graph. 11. Mudd Man. 228. 



Pig :— E. Bot. 2345. Leight. Br. Graph, t. 5. f. 5. 



Exs :— Schaer. 94. Leight. 243. Zw. 145. A. Arn. 104. 



Geog. Distrib : — Normandy, Italy, Germany, Pyrenees, Madeira. 



Bot. Prov :— 1, 2...5, 6, 7.. .10.. .19.. .26.. .29, 30, 31. 



England : — Netley Abbey ! Mr. Lvell. Newton Wood ! Yorkshire. Mr. 

 Baker. Nent Force ! Cumberland. Mr. Robertson. Plymouth. Mr. Holmes. 

 Nessoliff Hill ! Downton Castle Woods ! Llanyblodwel Rocks ! Craigforda ! 

 Shropshire. 



Ireland : — North of Ireland ! Miss Hutchins. Lame ! co. Antrim. Mr. 

 Thompson. Muckruss ! Kostellan ! Cork Harbour. Mr. Carroll. Doughruagh 

 Mountain ! co. Galway. Mr. Larbalestier. 



Wales : — Barmouth ! Bev. T. Salwey. Great Orme's Head ! Castle Dinas 

 Bran ! Pwll Dhu Head 1 Caswell Bay, Mumbles. Fishguard Harbour ! Good- 

 wick Bay ! Pembrokeshire. 



Channel Islands : — Near Ann Port ; Boulay Bay ; Rozel Meadow ; Noir- 

 mont, Jersey. Mr. Larbalestier. 



"Spores .003 in. long, by .00075 in. broad." (Mudd.) Spores .017—019 

 mm. long, .005 mm. broad. 



Var. De Gandollei, Stizb. whitish or dirty-rusty-brown ; lirellae 

 linear, lineari-oblong, oblong or o^ate, expanded, obtuse at the 

 extremities, chiefly simple and straight, dark-brown; spores 8, 

 colourless, narrow, lineari-oblong, round at each extremity, 3-septate. 



