OF GREAT BRITAIN. 175 



17. L. tartarea, (L.) white or albo-cinerascent, tartareous, 

 granulato-conglomerate, rimulose ; apothecia large, scattered, disk 

 plane, rugulose, pallido-testaceous, thalline margin thick, injiexed 

 and flexuose ; spores 8, colourless, elliptico-oblong, simple, large; 

 thallus and apothecia K yellow G red. 



On rocks, not uncommon. 1794. 



Syn :— Linn. Sp. PI. ed. 1. No. 14. (1753.). Ach. Syn. 172. Nyl. Scand. 157. 

 Mudd Man. 156. 



Fig :— E. Bot. 156. 



Exs :— Maudon 5. 8. Zw. 324. Schasr. 541. M. & N. 69. Welw. Lusit. 114. 

 Bohl. 10. Leight. 82. Stenh. 128. 



Geog. Distrib : — Europe, Africa, America. 



Bot. Prov:— 1...5...7...10, 11...15...18...U9— 30).. .31. 



England :— Cliff -rigg ! High Cliffs ! Cleveland. Mr. Mudd. Clee Hill ! 

 Shropshire. Rev. T. Salwey. Yorkshire ! Mr. Dioam. Hornby and Helmsley, 

 Yorkshire. Mr. Teesdale. (1794.) Northumberland and Durham. Mr. Winch. 

 Blackstone Bock; Lustleigh Cleve. Devon. Mr. Parfitt. Malvern Hills. Mr. 

 Purton. Tors of Dartmoor ; North Bovey, High Tor, Devon. Messrs. Jones and 

 Kingston. Ightham, Kent. Mr. Holmes. 



Scotland :— Garrynahine, Lewis; Hills south of Ballater! Aberdeenshire; 

 Abernethy ! Perthshire ; Birnam Hill ! Dunkeld. Dr. Lindsay. 



Ireland : — Frequent. Mr. Carroll. 



Wales : — Nannau ; Snowdon ; Cader Idris. Mr. Holmes. Barmouth ! 

 Conway Mountain ! Glyder Vach ! Capel Curig ! Cwm Cywion ! 



Channel Islands : — Common on all the Islands. Mr. Larbalestier. 



"Spores .009 to .012 in. long, by .005 in broad, t. 2. f. 61." {Mudd.) " Spores 

 .040—72 mm. long, .027-40 mm broad." (jtyl.) " Spores .030—70 mm. long, 

 .018—32 mm. broad." (T. M. Fr.) 



forma grandinosa, Ach. verrucoso-granvlate, verrucce sub-globose, 

 glabrous. 



On trees, not common. 1810. 



Syn :— Ach. L. U. 372. (1819.) Syn. 172. Nyl. Scand. 157. 

 Exs : — Spruce Amaz. And, 193. Anzi Langob. 431. Beich. & Schub. 63. 

 Geog. Distrib :— Europe. 

 Bot. Prov.— 7...10, 11.. .15. 



England : — Teesdale. Rev. J. Harriman. Hobhole near Castleton, Cleveland ! 

 Mr. Mudd. 

 Scotland : — Inverary ! Mr. Piggott. 

 Wales:— Glyn ! near Capel Curig. Bettws-y-coed ! 

 Spores .06 mm. long, .028 mm. broad. 



forma leprosa, Nyl. thallus with numerous large globose 

 soredia. 



On mosses, not uncommon. 1876. 



Syn :— Nyl. Lapp. Or. 135. (1866). 



Geog. Distrib :— Europe. 



Bot. Prov:— 7. ..26. 



Ireland:— Killeray Bay! Mr. Larbalestier. (1876). 



Wales :— Llyn Gwernan ! near Dolgelley. 



forma frigida, Ach. thallus thin, papillose, ramuloso-spinulose. 



On mosses, not common. 



Syn : -Ach. Meth, 166. (1803.) Syn. 172. Nyl. Scand. 157. 

 Fig :— E. Bot. 1879. 



Exs :— Fellman 114. Anzi Langob. 101. Th. M. Fries 61. 

 Geog. Distrib :— N. Europe, N. America. 

 Bot. Prov:— 2 .11... 15. 



England : — Northumberland and Durham. Mr. Winch. 

 Scotland :— Hills above Blair in Athol. Mr. Don. Lofty Hills. Mr. Dickson, 

 Grampians. Rev. J. M. Crombie. 

 Wales :— Cwm Cywion ! Conway falls ! Capel Curig ! 



