OF GREAT BRITAIN. 75 



1. T. vermicularis, Sw. chalky-white, 2-4 inches, prostrate, 

 ascending or erect, subulate or turgid, simple or bifurcate, smooth 

 or longitudinally rugulose, dispersed or stipate. (K +). 



On mossy earth, rare, 1799. 



Syn: — Lichen vermicularis, Sw. in Linn. fil. Meth. Muse. 119. (J781). Nyl. 

 Syn. 264. Mudd Man. 68. 



Fig :-E. Bot. 2029. Hoffm. PI Lich. t. 29. f. 1. 2 3. Nyl. Syn. t. 8. f. 6. 



Exs :— Schser. 86. Tuck. 118. Hepp 298. Anzi Cisalp. 28. Fellm. 48. 



Geog. Bistkib : — Europe, Asia, Central and S. America, New Holland. 



Bot. Prov !— 7... 12... 15, 16. 



England : — Skiddaw, Cumberland. Mr. Pilkington. 



Scotland : — Scotch Mountains. Mr. Dixon. (1799). Ben I.awers ! Ben Nevis. 

 Mr. D. Twrner. Forfarshire. Mr. W. Gardiner. Summit of Lochnagar ! Brae- 

 mar. Dr. Lindsay, Peak of Mamsoul, Inverness. Dr. B. White. Grampians. Rev. 

 J. M. Cronibie. 



Wales : — Cader Idris. Rev. T. Salwey. 



TeibeVIII. USNEEI. 



Thallus whitish or pallido-virescentj fruticulose, ramose and 

 ramulose, tough, terete, erect or pendulous, corticate on all sides, 

 internally with a firm filiform cartilaginous axis, affixed by a more 

 or less spreading point or base. Apothecia lecanorine, peltate, 

 thalline margin ramuloso-ciliate. Spores colourless, small, ellip- 

 soid. Paraphyses indistinct. 



I. USNEA. Bill. Ach. 



Thallus fruticulose, filamentose, erect or pendulous, fibrilloso- 

 ramulose, medullary axis solid. Apothecia concolorous orbi- 

 cular, or peltate, terminal or lateral. Spores small, ellipsoid, 

 colourless, simple. Sterigmata simple. Spermatia straight, cylin- 

 drico-acicular, apically truncate, fusiformi-turgid basally. 



1. U. barbata, (L.) Fr. albido-glaucescent or pale cinereo-vir- 

 escent, terete, variously branched, erect or pendulous ; apothecia 

 concolorous, rather large, fibrilloso-radiate ; spores shortly ellipsoid, 

 simple. 



On trees, pales, &c. common. 1778. 



f. 1. florida-, (L.) Fr. erect, scabrid, divergenti-ramose ; 

 apothecia large, plane, pallido-carneous, pruinose, with long 

 cilise at the margin. 



Syn — Fries L. E. 18. Nyl. Scand. 68. Mudd Man. 69. T. M. Fr. Scand. 

 15. Nyl. Syn. 267. Linn. Sp. PI. ed. 1. p. 1156. (1753). 



Fig :— E. Bot. 872. Hoffm. PI. Lich. t. 30. f. 2. Mudd Man. t. 1. f. 15. 



Geog. Distrib :— Throughout the Word. 



Bot. Prov :— 1, 2...5...7...10, 11, 12.. .14, 15 . 26.. .30. 



Exs :— Anzi It. S. 12. Mass. 51. M. & N. 260. Scha;r. 398. Hepp 826. Bohl, 

 128. Spruce 48. 54. Mudd 34. Welw. Lus. 115. Keich. & Schub. 92. 



Geog. Distrib :— Europe, Asia, Africa, America, Australasia. 



Bot. Prov :— 1...5, 6.. .10, 11.. .14, 15.. .30, 31. 



England :— Near Ludlow, Shropshire ! Rev. T. Salwey. Ayton Moor ! 

 Cleveland. Mr. Mudd. Gibside Woods, Durham. Mr. Winch, Wetheley; 

 Kagley Park, Worcestershire Mr. Purton. Haldon, Devon. Mr. Parfitt. New 

 Forest ; near Exeter and Hastings. Rev. J. M. Crombie. Foreshield Wood, 

 Alston, Cumberland ; Swinnop, East Allendale, Northumberland. Rev. W. 

 Johnson. Byde, Isle of Wight. Rev. A. Bloxam. 



Scotland :— Swanston Wood, Edinburgh. Dr. Gremlle. Deerhill Wood, 

 Forfarshire. Mr. W. Gardiner. Kinnoul Wood. Mr. Groall. Kinnaird. Mr. J. 

 Laing. Killin, Braemar. Rev. J. M. Crombie. 



