OF GREAT BRITAIN. 397 



Exs :— Hepp 556. Leight. 222. M. & N. 555. Schser. 281. Nyl. 82. Anzi 338. 

 Zw. 355. Eabh. 781. 



Geog. Distrib :— Switzerland, Italy, Germany, France, Sweden. 



Bot. Prov :— 2, 3.. .7.. .10.. .31. 



England : — Hurst ! Cuckfield ! and Ardingley ! Sussex. Mr. Borrer. Bovin- 

 gar ! Essex. Mr. LyeU. near Thirsk ! Yorkshire. Mr. Baker. Cliffrigg ! Airy- 

 holme Wood ! KiWale ! Easby Wood ! Yorkshire. Mr. Mudd. 



Wales : — Edderton Wood ! Montgomeryshire. 



Channel Islands :— Jersey. Mr. Larbalestier. 



forma elegans, Borr. thallus pulverulent, (K reddish) ; Jirellse 

 larger, simple and divided, prominent, wavy. 

 On trees, rare. 



Syn :— Leight. Br. Graph. 21. (1854.) Mudd Man. 235. 

 Exs :— Leight. 286. 

 Geog. Distrtb : — Europe. 

 Bot. Pkov :— 2, 3... 10... 15. 



England : — Ardingley ! Sussex. Mr. Borrer. Easby Wood ! Ingleby ! York" 

 shire. Mr. Mudd. Epping Forest and Exeter. Rev. J. M. Crombie. 

 Scotland : — Near Stirling. Rev. J. M. Crombie. 



forma rubella, Pers. thallus smooth, (K reddish) ; lirellse pro- 

 minent, simple, immersed only at the base. 

 On trees, birch, common. 



Syn:— Pers. Ust. Ann. Bot. st. 7. t. 1. f. 2. A. a. (1794.) Leight. Br. Graph, 

 p. 22. Mudd Man, 235. Opeg. herpeticavar. disparata. Ach. Syn. 73. Nyl. Scand. 

 255. 



Fig :— Cheval. Hist. Graphid. t. 17. f. 1. a. f. 2. 



Exs :— Schser. 95. Leight. 221. Anzi 339. Bohl. 74. Hepp 557. 



Geog. Distrib : — Switzerland, Italy, Pyrenees, France, Germany, Sweden. 



Bot. Prov :— 2...3...5...7...10...31. 



England :— St. Leonard's Forest ! and Charlton Forest ! Sussex. Mr. Borrer. 

 Berrow, S. end of Malvern Hills ! Worcestershire. Mr. Lees. Yorkshire. Mr. 

 Dixon. Airyholme Wood ! Cliffrigg ! Cleveland. Mr. Mudd. Stoke Wood, 

 Exeter. Mr. Parfitt. Great Glenham, Suffolk. Rev. E. N. Bloomfield. Tetsworth ! 

 Oxfordshire. Mr. Larbalestier. 



Wales : — Llanbedrog ! 



Channel Islands : — Grouville, Jersey. Mr. Larbalestier. 



forma rufescens, Pers. dark-dingy-olive, (K reddish); lirellm 

 prominent, immersed only at the base, flexuose, sub-stellato-ramose ; 

 epithecium plane, more or less canaliculate. 



On ash, birch, and holly trees, not common. 



Syn :— 0. rufescens, Pers. Ust. Ann. Bot. st. 7. p. 29. t. 2. f. 3. A. a. (1794.) 

 Nyl. Scand. 256. Mudd Man. 235. O. siderella, Ach. Syn. 79. O. herpetica var. 

 rubella f. divisa, Leight. Br. Graph. 22. 



Fig :— Cheval. Hist. Graph, t. 18. f. 1. ». f. 26. i. 3. c. 



Exs ;— Mudd 214. . 



Geog. Distbib :— Normandy, Italy, Sweden, Belgium. 



Bot. Pbov:-2, 3...5...7, 8...10. . 



England — Sussex! Mr. Borrer. Gopsall Wood! Leicestershire. Rev. A. 

 Bloxam. near Ayton ! Cleveland. Mr. Mudd. Stoke Wood, Exeter. Mr. Parfitt. 

 Weir Coppice ! near Shrewsbury. 



Wales :— Trefriw ! ,.,,.« ve n c 



Nylander in Flora 1873. p. 299. says that rufescens differs specifically from 

 herpetica according to the spermogonia. 



forma arthonoidea, Schser. lirellse suborbicular, innate, im 

 marginate, plane. 



On ash trees, not common. 

 Syn:— Schser. Spic. 328. (1823.) En. 156. 

 Fig :— Hepp t. f. 47. 



