LECIDEa] LECIDEACEJE 93 



165. L. muUensis Stirton in Scott. Nat. iv. p. 166 (1877).— 

 Thallus dark or blackish-grey, areolate-warted, cracked, formed 

 of erect columellse, either connate or dispersed (K + yellow, 

 medulla + yellow then ferruginous-red). Apothecia black, sub- 

 innate, small, plane, acutely margined, the margin often flexuose 

 or undulate ; hypothecium thickish, brown or brownish-black ; 

 paraphyses irregular, indistinct, black at the apices; spores 

 ellipsoid, 0,006-9 mm. long, 0,004-6 mm. thick ; hymenial gela- 

 tine bluish then wine-red with iodine. — Leight. Lich. Fl. ed. 3, 

 p. 288. Specimen not seen. 



Hah. On rocks. Collected by Dr. Stirton on rocks in Island of 

 Mull. 



166. L. orphnaeilla Stirton in Scott. Nat. iv. p. 166 (1877). — 

 ThaUus black, opaque, minutely granular-furfuraceous, con- 

 tinuous. Apothecia black, sessile, plane or somewhat convex, 

 with a shining, irregularly lobate margin ; hypothecium colour- 

 less ; paraphyses rather stout, generally conglutinate ; the epi- 

 thecium thick and black ; spores oblong or fusiform-oblong, 

 0,013-18 mm. long, 0,003-4 mm. thick; hymenial gelatine in- 

 tensely blue with iodine. ^ — -Leight. Lich. Fl. ed. 3, p. 254. 

 Specimen not seen. 



Hah. On rocks. Collected by Dr. Stirton in Island of Mull. 



167. L. phyllodisca Stirton in Trans. Glasgow Soc. Nat. 

 1875, p. 86. — ^ThaUus black, thin, scurfy or scarcely visible. 

 Apothecia black, often 2-3 aggregate or conglomerate and then 

 undulate, the margin thin, flexuose, shining dark-grey or dark- 

 bluish-grey within (K 4- purpurescent or rosy) ; hypothecium 

 blackish or darkly zonate ; paraphyses distinct, clavate, and 

 black or bluish-black at the apices ;. spores ellipsoid, 0,007-9 mm. 

 long, 0,0045-55 mm. thick ; hymenial gelatine slightly blue then 

 wine-yellow or violet with iodine. — Leight. Lich. Fl. ed. 3, p. 353. 

 Specimen not seen. 



Hab. On rocks, rare. Collected by Dr. Stirton near Killiecrankie, 

 Perthshire. 



168. L. callista Stirton in Grevilleaiii. p. 34 (1874).— Thallus 

 dark-brownish-black, granular, the granules dispersed or con- 

 glomerate. Apothecia black, small, bluish-grey pruinose, sessile, 

 crowded, often contiguous, the margin prominent, inflexed ; hypo- 

 thecium brownish-black, thin ; paraphyses rather indistinct, 

 thickish, clavate, and brown at the apices ; spores ellipsoid or 

 cylindrical, small, 0,012-14 mm. long, 0,003 mm. thick ; hy- 

 menial gelatine intensely blue almost black with iodine. — Leight. 

 Lich. Fl. ed. 3, p. 276. Specimen not seen. 



Hab. On rooks. Collected by Dr. Stirton near Grantown, Inver- 

 nessshire. 



