LECIDEA] LECIDEACEiE 79 



Hah. On schistose rocks in maritime and subalpine regions. — 

 Distr. Kare in Wales and N.E. Scotland. — B. M. Llyn Geironydd 

 and Trefriw, Carnarvonshire ; coast of Kincardineshire. 



136. L. contiguella Nyl. in Flora Ivi. p. 295 (1873).— Thallus 

 determinate, thinly areolate-rimose, whitish (K — , CaCl — , me- 

 dulla I—); hypothailus black, limiting the thallus. Apothecia 

 moderate, adnate, plane, thinly margined, black, concolorous 

 v/ithin ; paraphyses slender, almost distinct ; epitheclum bluish- 

 black ; hypothecium brown; spores oblong, 0,011-15 mm. long, 

 0,0045-55 mm. thick ; hymenial gelatine bluish then wine- 

 reddish with iodine. — Cromb. in Grevillea ii. p. 90 ; Leight. 

 Lich. Fl. ed. 3, p. 296. 



Kesembles L. lactea Floerke, but is well distinguished b}^ the 

 absence of any thalline reactions. The apothecia are often crowded 

 and angulose, with the margin more or less flexuose. The spermo- 

 gones, rarely present in the single specimen gathered, have the 

 spermatia bacillar, about 0,007 mm. long, 0,001 mm. thick. 



Hah. On a f elspathic boulder in an alpine locality. — B. M. Morrone, 

 Braemar, Aberdeenshire (the only locality). 



137. L. auriculata Th. Fr. Lich. Arct. p. 213 (I860).— Thallus 

 whitish, ashy-grey or brownish, cracked-areolate sometimes 

 evanescent (Iv — , CaCl — ). Apothecia appressed or adnate, at 

 first plane then more or less convex with the centre somewhat 

 depressed - umbilicate, margin persistent, flexuose, becoming 

 rounded-lobate ; hypothecium thick, blackish-brown ; paraphyses 

 loosely coherent, clavate and dark-brown or greenish-blue-black 

 at the apices ; asci somewhat scarce ; spores ellipsoid-oblong, 

 small, 0,006-1 1 mm. long, 0,0025-4 mm. thick ; hymenial gelatine 

 deep-blue with iodine. — L. sarcogyniza Nyl. in Flora li. p. 475 

 (1868). Cromb. in Journ. Bot. vii. p. 106 (1869) & Lich. Brit, 

 p. 82 ; Leight. Lich. Fl. p. 289 ; ed. 3, p. 312. L. pJiylliscocarpa 

 Nyl. in Flora Ivii. p. 314 (1874) ; Cromb. in Grevillea iii. p. 23 ; 

 Leight. Lich. Fl. ed. 3, p. 312. 



Distinguished by the irregular lobate apothecia which sometimes 

 form shallow pits in the substratum more or less white-farinose (I — ) 

 at the base. 



Hah. On rocks in maritime and mountainous regions. — Distr. 

 Somewhat plentiful on the Grampians and on the east coast of 

 Scotland. — B. M. Glen Fender and Craig Tulloch, Blair Athole, Ben 

 Lawers and Ben Vrackie, Perthshire ; near Portlethen, Kincardine ; 

 Hill of Ardo and Morrone, Braemar, Aberdeenshire ; Ben Cruachan, 

 Argyll ; Glen Nevis, Invernessshire. 



Var. )8 diducens Th. Fr. Lich. Scand. p. 499 (1874).— Thallus 

 evanescent. Apothecia scattered or usually aggregate. — L. 

 diducens Nyl. in Flora xlviii. p. 148 (1865); Cromb. Lich. Brit, 

 p. 85 ; Leight. Lich. Fl. p. 298 ; ed. 3, p. 309. L. confcederans 



