374 LICHENACEI. [LECANOKA. 



lecanorine), saffron-coloured or tawny-orange. Cromb. Grevillea, 

 xviii. p. 45. Lecanora aumntiaca var. erythrella Cromb. Lich. Brit. 

 p. 46 ; Leight. Lich. Fl. p. 217, ed. 3, p. -07 Lecanora erythrella 

 Hook. Fl. Scot. ii. p. 49 ; Sm. Eng. Fl. v:p. 186. Lecidea erythrella 

 Tayi. in Mack. Fl. Hib. ii. p. 130. Einodina erythrella Gray, Nat. 

 Arr. i. p. 456. Lichen erythrellus Ach. Prodr. (1798) p. 43 ; Eng. 

 Bot. t. 1993. Callopisma aurantiacum [3. flavovirescens Mudd, Man. 

 p. 137. Lichen Jtavorubescens Huds. Fl. Angl. i. p. 443 pro parte ; 

 With. Arr. iv. p. 15 pro parte. Lichen aurantiacus Light!'. Fl. Scot. 

 ii. p. 810 pro parte. Brit. Exs. : Mudd, n. 100 ; Larb. Lich. Hb. 

 n. 20. 



Distinguished by the areolate and more developed thallus, which is 

 often widely expanded. The colour also is of a deeper yellow, though in 

 shady places it is at times yellowish-green. The apothecia, which are 

 numerous, are also smaller, more convex, with the thalline margin very 

 seldom visible, even in young plants. 



Hab. On rocks and old walls in maritime and upland localities. Distr. 

 Somewhat local, though plentiful where it occurs in the more hilly tracts 

 of Great Britain ; apparently rare in N.W. Ireland. B. M. : Hastings, 

 Sussex ; Saltash and Valley of Rocks, Lynton, Devonshire ; near Pen- 

 zance, Cornwall ; North Hill, Malvern, Worcestershire ; Craig-y-Rhiw, 

 Oswestry, and Llauymyuech Hill, Shropshire ; Snowdr.u, Carnarvonshire; 

 Roseberry, Cleveland, Yorkshire ; Brigsteer, Westmoreland ; Alston, 

 Cumberland. Appin and Glen Orchy, Argyleshire ; Killin, Ben Lawers, 

 Kinnoul Hill, and Blair Athole, Perthshire ; Lundie Craigs, Forfarshire ; 

 Castleton of Braemar and Morrone, Aberdeenshire. Kylemore Lake, 

 Connemara, co. Galway. 



Var. ft. inalpina Nyl. Lich. Scand. (1861) p. 142. Thallus thin, 

 paler or whitish ; otherwise as in the type. Cromb. Grevillea, xviii. 

 p. 45 ; Lich. Brit. p. 46 pro parte ; Leight. Lich. Fl. p. 218 pro 

 minima parte, ed. 3, p. 207 pro minima parte. Callopisma auran- 

 tiacum y. inalpinum Mudd, Man. p. 137 pro minima parte. Leca- 

 nora inalpina Ach. Lich. Univ. (1810) p. 388. 



Differs in the colour of the thallus, which in our few specimens is 

 rather scattered and pale-yellowish. By British authors it has not been 

 rightly distinguished from L. pyracea. 



Hab. On mica- schist rocks in upland situations. Distr. Local and 

 scarce in N.W. England and the S. Grampians, Scotland. B. M. : Harris 

 Moor, near Whitehavon, Cumberland. Glen Lochay and Ben Lawers, 

 Perthshire. 



Form rubescens Nyl. Lich. Scand. (1861) p. 142. Thallus 

 thinnish, pale-yellowish or whitish. Apothecia convex, reddish- 

 saffron-coloured. Cromb. Grevillea, xviii.' p. 45. Lecidea auran- 

 tiaca /3. rubescem Ach. Meth. (1803) p. 69. 



Only a form of the above variety characterized by the convex, differently 

 coloured apothecia. 



Hab. On schistose rocks in a subalpine region. Distr. Very sparingly 

 on one of the S.Grampians, Scotland. B. M.: Ben Lawer? Perthshire^ 



