68 LECANO-LECIDEEI [lEGIDBA 



slightly convex, contiguous. Apothecia appressed, becoming 

 superficial, plane or slightly convex. — L. contigua var. calcarea 

 Fr. Lich. Eur. p. 302 (1831) (excl. syn) ; Leight. op. cit. ed. 3, 

 p. 300. 



A well-marked form with white rather shining smooth thallus. 



Hab. On rocks. — Distr. Not unfrequent in England, Wales and 

 W. Ireland ; not recorded from Scotland. — B. M. St. Minver and 

 St. Wenn, Cornwall ; Okehampton, Devon ; Beddgelert, Carnarvon ; 

 Kylemore, Connenlara, Galway. 



Var. percontigua A. L. Sm. — Distinguished by the rather 

 larger, umbonate apothecia, and the difierent chemical reaction 

 (K + yellowish and then brownish-red). — L. percontigua Nyl. in 

 Flora Ixv. p. 457 (1882). 



Bah. On rooks, rare. — B. M. Barrowmouth, Whitehaven, Cum- 

 berland (the only locality). 



Var. platycarpa Fr. Lich. Eur. p. 300 (1831).— Thallus difiuse, 

 whitish or greyish, thin or at length disappearing. Apothecia 

 moderate in size or large, at first plane with a tumid prominent 

 margin, becoming inmiarginate, sometimes appressed-adnate. — 

 Mudd Man. p. 210; Cromb. Lich. Brit. p. 80; Leight. Lich. 

 Fl. p. 292; ed. 3, p. 299. L. platycarpa Ach. Lich. Univ. 

 p. 173 (1810) ; var. gteriza Floerke ex Koerb. Syst. Lich. 

 Germ. 249 (1856) ; f. steriza Mudd I. c. ; var. JiydropMla Fr. I. c. 

 p. 301 ; f. hydrophila Ijeight. Lich. Fl. p. 293 (1871) ; ed. 3, p. 300. 

 Patellaria macrocarpa Dc. Fl. Fr. ii. p. 347 (1805). 



Exsicc. Mudd n. 109. 



Distinguished from the type by the very scanty thallus. 



Hah. On rocks. Not unfrequent in the hUly regions of N. Eng- 

 land, Wales, Scotland and Ireland. — B. M. Nant Pfrancon and 

 Beddgelert, Carnarvon ; Ayton Moor, Cleveland, Yorkshire ; Ben 

 Lawers, Perthshire ; Morrone, Braemar, Aberdeenshire ; Doughruagh 

 Mt., Connemara, Galway. 



Var. flavicunda Nyl. Lich. Scand. p. 224 (1861).— Thallus 

 rusty-red, rather thick, tartareous, areolate, the areolae flat and 

 smooth. Apothecia moderate in size or large, flat or somewhat 

 ■convex, more or less whitish-pruinose. — Cromb. Lich. Brit. p. 80 ; 

 f. flavicunda Leight. Lich. Fl. p. 294 ; ed. 3, p. 301. L. flavi- 

 cunda Ach. Lich. Univ. p. 166 (1810). 



Hah. On rocks. — Distr. Not unfrequent in maritime and hilly 

 districts of S.W. and N. England, Wales and Scotland. — B. M. Cam 

 Galven, near Penzance, Cornwall ; Clee HiU, Shropshire ; Cader Idris, 

 Merioneth ; Snowdon, Carnarvon ; Ayton Moor, Cleveland, York- 

 shire ; Teesdale, Durham ; Ben Beck, Sidlaw HiUs, and Baldoran, 

 Forfarshire ; Ben Lawers, Perthshire ; Craig Coinnoch and Morrone, 

 Braemar, Aberdeenshire; Dunkerron, Kerry; Connemara, Galway; 

 ErrLE Eiver, Mayo. 



114. L. sorediza Nyl. in Bull. Soc. Linn. Norm. ser. 2, 

 vi. p. 292 (1872). — Thallus determinate, smooth, areolate- 



