166 



THE LICHEN-FLORA 



Geog. Distbib : — Europe. 

 Box. Pbov — 5, 6. 



England: — Llanymynech Hill! Shropshire. (1871.) near Cirencester. Mr. 

 Joshua. 

 Wales :— Giltar Point ! Tenby. 



Sub-Teibb VI. EULECANOREI. 



Thallus crustaceous, gramilose, rarely radiate, smooth or leprose. 

 Apothecia lecanorine, rarely biatorine. Paraphyses distinct. 

 Spores simple, rarely septate, colourless, rarely fuscous. Sper- 

 matia various in form in different species, e.g. cylindrical or 

 acicular, straight or arcuate, or oblongo-ellipsoid. 



VI. LECANORA. (Ach.) Nyl. 

 Characters as above. Thecse either 8-spored or polysporous, 



A. Spores numerous. 



1. L. crenata, Nyl. bright full yellow, sub-orbicular, effuse, 

 crenato or granuloso-squamulose in the centre, laciniato-radiate at 

 the circumference, laciniee sublinear, very narrow, convex, incised, 

 crenate and incurved at the apices (K — C — ) ; apothecia darker 

 yellow, plane, thalline margin elevated, crenulate ; spores numerous, 

 colourless, oblong or sub-ellipsoid, bilocular. 



On maritime rocks. 1866. 



Stn :— Nyl. Lapp. Or. 130. (1866.) L. crenulata, Wahlenberg El. Lapp. 416. 

 Th. M. Eries Lieh. Arctoi 70. Nyl. Scand. 140. Ach. Syn. 181. 



Exs :— Th. M. Eries 58. 



Geog. Distbib : — Scandinavia, Norway. Greenland. 



Bot. Peov :— 7. 



Wales :— Aberdovey ! Rev. A. Bloxam. These Welsh specimens were sterile 

 and not well developed, but the appearance of the laciniae of the thallus 

 accorded well with Eries Exs. 58 ! The asci especially the apices become blue 

 with iodine. 



"Spores .010—16 mm. long, .004— .005 mm. broad." (T.M. Fr.) "Spores 

 .009— .015 mm. long. .004— .007 mm. broad." (Nyl.) Spores .012— .015 mm. 

 long. .004 — .0055 mm. broad. Hydrate of Potash just tinges the thallus a 

 pale reddish brown. 



2. L. vitellina, (Ach.) pale greenish-yellow, granulose, effuse, 

 granules minute, crenate or sublobulate, or conglomerate (K — ) ; 

 apothecia tawny-yellow, plane, thalline margin entire or crenulate ; 

 spores numerous, colourless, oblong, simple or sub-polari-bilocular 

 or obsoletely 1 -septate. 



On rocks, walls, old pales, &c. frequent. 1777. 



Stn :— Ach. L. V. 403. (1810) Syn. 174. Nyl. Scand. 141. Mudd Man. 135 



Fig :-E. Bot. 1792. Hffm. PL L. t. 26. f. 1. Hepp Sporen t. 9. f. 70. 



Exs :— Schaer. 450. M. and N. 741. Hepp 70. 



Geog. Distbib : — Europe, N. America, Abyssinia. 



Bot. Pbov:— 1, 2, 3, 4.5...7...U...15...18...26...30, 31. 



England : — Northumberland and Durham. Mr. Winch. Exminster • Bud- 

 leigh Salterton, Devon. Mr. ParfiU. Kelvedon, Essex. Mr. Varenne. Midland 

 Counties. Mr. Furton. Cambridge. Rev. R. Relhan. Oxford. Dr. Sibthorp. 

 Wrotham, Maidstone, Tunbridge. Mr. Holmes. Hyde, near Cirencester. Mr. 

 W. Joshua, near Christchurch. Eastbourne. Mr. Roper. Haughmond Hill ' 

 Middle ! Longmynd ! Shropshire, 



