OF GREAT BRITAIN. 299 



yellow-carneous, scattered, sessile, somewhat plane, with obtuse or 

 obsolete margin, or convex, subimmarginate, (K — ) ; hypothecium 

 colourless, lateral excipulum pale, slightly dusky externally ; para- 

 physes distinct, thick, apices colourless ; spores 4 — 6 or 8, colour- 

 less, oblong or ellipsoid or fusiformi-ellipsoid, simple, small ; gela- 

 tina hymenea I blue then fulvescent. 



On rocks in mountain streams, very rare. 1877. 



Syn :— Nyl. in Flora 1877. p. 563. 



Bot. Prov :— 26. 



Ireland : — Near Kylemore ! co. Galway. Mr. Larbalestier. (1877.) 



"Spores .015 — 20 mm. long, .006 — 7 mm. broad. Spermatia arcuate .018 — 

 22 mm. long, .0005 mm. broad." (Nyl.) Spores .01 — .011 mm. long, .005 mm. 

 broad. 



ft Hypothecium dark. 



158. L. contigua, Fr. greyish-white or even creamy, tartareous 

 or thin, contiguous or areolate, areolae plane, smooth or rugose, 

 hypothallus black ; apothecia arising from the thallus, sessile, plane 

 or convex, roughish, margin thick, prominent and obtuse ; hypothe- 

 cium thick, blackish-brown ; thalamium white ; spores 8, colourless, 

 oblong, large, simple. 



forma limitata, Leight. bluish-grey, thin, contiguous, smooth, 

 . limited by black hypothallus ; apothecia moderate, sessile, plane or 

 plano-convex, with pale or blackish-brown pruina. 



On rocks, common. 



Syn : — L. contigua, a, a. Fries L. Eur. 298. in part (1881.) excl. syn. 



Exs :— Leight. 155. Nyl. Pyr. Or. 44. 



Geog. Distrib : — Europe, Eastern Pyrenees. 



Bot. Prov: -1, 2, 3...5...7...10...18, 19.. .31. 



England : — Sussex ! Mr. Borrer. Eairlight, Hastings ; Leith Hill ; Mon- 

 mouth. Mr. W. Joshua. Lanbrough-rigg ! Cockshaw near Ayton ! Yorkshire. 

 Mr. Mudd. Tors of Dartmoor ; Exeter ; Dartmouth, Devon. Mr. Parfitt. 

 Tiptree Heath, Essex. Mr. Varenne. Plymouth. ' Mr. Holmes. Abdon Burf ! 

 Haughmond Hill ! Soudley Quarries ! near Hope Bowdler ! Shropshire ; 

 Wapley TTilt ! Herefordshire. 



Scotland : — Garrynahine, Lewis ; Stennis, Orkney. Dr. Lindsay. 



Ireland : — Near Cork ! Mr. Carroll. 



Wales : — Penmaen-Mawr ! Carnarvonshire ; between Corwen and Bala ! 

 , Llyn-y-Cae ! Cader Idris. 



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



"Spores .016—25 long, .008—012 mm. broad." (Nyl. I "Spores .004— 

 .00425 in. long, by .0015— .002 in. broad. Spermatia straight, cylindrical." 

 (Mudd.) Spores .022— .0235 mm. long, .011— .012 mm. broad. 



forma platycarpa, Fr. greyish-white, diffuse, thin, at length 

 evanescent ; apothecia very large, flat and expanded ; margin paler. 

 On rocks, common. 



Syn :— Fries L. Eur. 300. (1831.) Nyl. Scand, 224. 



Fig :— Massal. Bic. fig. 125. Ach. L. U. t. 2. f. 5. 



EXS :— Zw. 18. 424. Nyl. 141. Eellm. 184. 186. 



Geog. Disteib : — Germany, Pyrenees, Switzerland, E. Lapland, Italy, 

 Hungary, France, N. Zealand. 



Bot. Prov :— 5:..7...10...15...(19— 30). ..26. 



England : — Ludlow. Mr. Joshua. Haughmond Hill I Abdon Burf ! Long 

 ; Mynd ! Shropshire. 



Ireland : — On Mountains. Mr. Carroll. Doughruagh Mountain ! co. Galway. 

 Mr. Larbaleslier 



