OF GREAT BRITAIN. 319 



206. L. myriocarpa, (DC) cinerascent, thin, unequal, or sub 

 granulose, effuse or evanescent, (K- — • C — ) ; apothecia small, plane or 

 sub-convex, black, margined ; hypothecium nigro-fuscous ; spores 8, 

 fuscous, oblong, 1-septate, small, epispore distinct. 



On trees, old wood palings, and rocks, frequent. 



Syn:-D.C. Fl. Franc. 2. p. 346. (1805.) Ach. Syn. 18. Nyl. Scand. 237. 

 Mudd Man. 217. 



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

 E. Lapland, Arctic America, South America. 



" Spores .009— .016 mm. long, .0055— .0075 mm. broad. Spores .010—16 mm. 

 long, .006—8 mm. broad." (Jfyl.) " Spores .009—16 mm. long, .004—8 mm. 

 broad." (T. M. Fries.) " Spores .003— .00325 in. long, .001— .00125 in. broad. 

 Spermatia cylindrical, curved or undulate .003 in. long, by .00012 in. broad.' 

 {Mudd.) Hypothecium a nigro-fuscous central mass separated from the nigro- 

 fuscous lateral excipulum by a paler interval. Paraphyses distinct, cohserent, 

 apices large, nigro-fuscous or nigricant. Spores .012— .015 mm. long, .0045 — 

 .006 mm. broad. 



A. Corticolar forms. 



forma chloropolia (Fr.) thickish, crustaceous, viridi-cinerascent, 

 rugoso-verruculose, unequal. 



On boarded buildings, old palings and trees (elm, pear). 



Syn:— Fr. S. V. Sc. I. p. 115. (1846.) 



Exs:— Fr. L. S. 353. Zw. 400. Schaer. 528. 472. Leight. 63. Anzi It. Sup. 

 299. 



Geog. Distrib :— Scandinavia, Germany, Switzerland, Italy. 



Bot. Prov:— 2. ..5, 6. ..10. ..31. 



England : — Browston 1 and Halesworth ! Mr. D. Turner. Stokesleyl York- 

 shire. Mr. Mudd. Church Stretton ! Lyth Hill 1 Shrewsbury I Worfield ! 

 Shropshire. 



Wales : — Knighton ! Radnorshire. 



Channel Islands : — Beauport ! Mr. Larbalestier. 



forma pinicola, Ach, thin, brownish-grey, effuse, pulverulento- 



On pines, yew, willow, frequent. 



. Stn :— Ach. Meth. p. 66. Hook. Br. Fl. 176. 



Fig :— E. Bot. t. 1851. Hepp Sporen t. 6. f. 41. and 42. 



Exs :— Hepp 41. 42. Schsr. 200. Mass. 265. Anzi Ital. Sup. 298. Zw. 194. 

 194 B. Nyl. Par. 61. Mudd 190. Bohl. 124. 



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



Bot. Prov :— 2, 3.. .5.. .7, 8. ..10.. .20. 



England : — Sussex ! Mr. Borrer. Stokesley ! Yorkshire, Mr. Mudd. Twy- 

 cross ! Leicestershire. Bex. A. Bloxam. near Lewknor ! Wheatfield Park ! 

 Oxfordshire. Mr. Larbalestier. Copthorn ! Loppington ! Shrewsbury ! 



Ireland : — Carrigaloe ! Great Island and Blarney ! Cork. Mr. Carroll. 



Wales . — Bettws-y-coed ! 



forma quercicola, Rabh. thin, whitish, effuse, slightly pulverulento- 

 granulose, or evanescent. 

 On oaks, rare. 1857. 



Syn :— Kabenhorst L. Europ. Exs. 832. 



Exs :— Eabh. 832. 



Geog. Distrlb :— Europe. 



Bot. Prov:— 5.. .7. ..31. 



England : — Worfield ! Shropshire. 



Wales : — Bettws-y-Coed ! between Corwen and Bala ! (1857.) 



Channel Islands: — Maufant! St. Saviour, Jersey. Mr. Larbalestier. 



forma safrrophila, Ach. ecrustaceous, evanescent ; apothecia larger, 

 plane, margined, scattered or aggregate, numerous. 



