lbcidea] lecidbacejB 79 



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

 Bistr. Rare in Wales and N.E. Scotland. — B. M. Llyn Geironydd 

 and Trefriw, Carnarvonshire ; coast of Kincardineshire. 



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

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

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

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

 within ; paraphyses slender, almost distinct ; epithecium 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 GrevUlea ii. p. 90 ; Leight. 

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



Resembles L. lactea Floerke, but is well distinguished by 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. 



Hob. On a f elspathio 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 (K — , 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-otilong, 

 small, 0,006-11 mm. long, 0,0025-4 mm. thick; hymenial gelatine 

 deep-blue with iodine. — L. sareogyniza 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. phylliscocarpa 

 Nyl. in Flora Ivii. p. 314 (1874) ; Cromb. in GrevUlea 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. 



Hob. 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 Tullooh, Blair Athole, Ben 

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

 HiU of Ardo and Morrone, Braemar, Aberdeenshire ; Ben Cruaohan, 

 Argyll ; Glen Nevis, Invernessshire. 



Var. p 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. confaederans 



