OF GREAT BRITAIN. 379 



forma impresswla, Leight. orbicular ; apoihecia concentrically 

 arranged, concave, innate, almost urceolate, circumscissed, with an 

 albo-mffused, persistent, very prominent, margin. 



On caloareous rocks, common. 



Exs :— Reich, and Schub. 148. Leight. 17. 



Geog. Distbib : — Germany, Hungary. 



Bot. Prov:— 2...5...7. 



England :— Sussex I Mr. Borrer. Whitecliff Rocks ! Ludlow. 



Wales :— Llangollen ! 



forma coarctata, Leight. diffuse, scattered, or very slightly imper- 

 fectly orbicular ; apothecia scattered, innate, concave, circumscissed, 

 with a thin, upturned, white, coarctate margin. 



On calcareous rocks, common. 



Exs :— Anzi Ven. 81. 



Geog. Distrib : — Italy. 



Bot. Pbov :— 2.. .5, 6, 7...10...20...26. 



England : — Sussex ! Mr. Borrer. Kildale ! Yorkshire. Mr. Mudd. Moor 

 Park ! Herefordshire. Wrekin ! Shropshire. 



Ireland : — Doughruagh Mountain ! Galway. Mr. Larbalestier. Kileully ! 

 Cork. Mr. Carroll. 



Wales :— Builth ! Llyn Aran ! Cader Idris. 



360. L. excentrica, Ach. dirty-white or greyish-white, thin, 

 opake, rimulose, (K — C — ) ; apothecia black, sessile, plane, with a 

 thickish obtuse naked margin, scattered ; spores colourless. 



On calcareous rocks, not common. 1800. 



Stn :— Ach. Meth. 37. (1803.) Nyl. Scand. 234. 



Fig :— Hoffm. PI. Lioh. t. 50. f. 1. 



Exs :— Arn. 684. 



Geog. Distbib : — Sweden, Germany, Italy, Switzerland. 



Bot. Pbov:— 2.. .6, 7.. .10.. .15, 16.. .19.. .26.. .30, 31. 



England : — Sussex ! Mr. Borrer. (1800.) Carlton Bank ! Cleveland. Mr. 

 Mudd. 



Scotland : — Ben Lawers. Dr. Soil. Durris and Appin. Rev. J. M. Crombie. 



Ireland : — Island Magee, Antrim. Or. Moore. Killarney. Adm. Jones. 

 Kylemore ! Doughruagh Mountain ! Salrock road ! Galway. Mr. Larbalestier. 



Wales : — Conway ; Crib Coch ! Drwsynant ! Pen Cow ! near Fishguard, 

 Pembrokeshire ; Llangollen ! Mr. Calcott. 



Channel Islands : — St. Aubin's Fort ! Jersey. Mr. Larbalestier. 



361. L. rimosa, (Dicks.) white or bluish-white, tartareous, orbi- 

 cular, determinate, anguloso-rimose in the centre, radiato-rimose 

 towards the circumference, which is appressed and minutely crenate, 

 (K — C — ) ; apothecia black, more or less ccesio-pruinose, rather 

 large, plane, innato-sessile, margin thick, albo-suffused ; hypothe- 

 cium thickish, nigro-fuscous ; spores 8, colourless, oblong, mixrali- 

 locular. 



On calcareous rocks, frequent. 1785. 



Stn :— Dicks. Br. Crypt. 1. 12. (1785.) L. calcarius, Weis. Gott. 40. (1772). 

 L. umbilicata, Ram. Act. Soc. Linn. Paris. 1827. p. 434. L. petrcea var. umbili- 

 cata, Nyl. Prod. 128. 



Fig :— E. Bot. 1736! Hepp Sporen t. 17. f. 147. 



Exs :— Dicks. 24 ! ! ! Hepp 147. Arn. 215. Anzi Ital. S. 311. Mass. 15. 



Geog. Distrlb : — Switzerland, France, Pyrenees, Sweden, Hungary. 



Bot. Prov .—5 . 7.. .10. 11. 12.. 15. 



England : — Yorkshire ! Mr. Dickson (1785.) Heartside Fell between Penrith 

 and Alston, Cumberland. Rev. J. Holme. Craig-y-Rhiw, OsweBtry. Rev. T. 

 Salmey. Bed of Wear ! Durham ! Banks of Tees near Middleton. Mr. Robertson. 

 Carlton, Cleveland. Mr. Mudd. Brown Clee Hill ' Shropshire, 



