lecidea] lecideace^ 103 



From L. ex2)ansa Nyl. it is similarly separated by the hypothecium 

 and also by the larger immarginate apothecia ; these, like the thallus 

 itself, are rather scattered. The spermogones, here and there visible, 

 have the spermatia cylindrical, straight, 0,009-0,011 mm. long, 

 0,001 mm. thick. 



Hab. On a felspathic boulder and quartzose stones in an alpine 

 situation. — B. M. Summit of Morrone, Braemar, Aberdeenshire (the 

 only locality). 



193. L. nitescens Leight. in Grevillea iv. p. 79 (1875). — 

 Thallus white, thin, continuous, minutely and irregularly rimulose, 

 effuse, indeterminate (K -f- yellow, CaCl + yellow) often over- 

 spread more or less with a dark-brown alga. Apothecia 

 numerous, small, somewhat convex, shining, immarginate ; hypo- 

 thecium thick, black ; paraphyses distinct, but conglutinate, 

 apices pale; spores oblong or linear-oblong, 0,017 mm. long, 

 0,0055 mm. thick. — Leight. Lich. Fl. ed. 3, p. 306. Specimen 

 not seen. 



Hab. On rocks. Collected by Larbalestier at Salrock Road, Conne- 

 mara, Galway. 



194. L. restricta Stirton in Trans. Glasgow Soc. Nat. 1875, 

 p. 88.— Thallus blackish-grey, wrinkled, thin. Apothecia black, 

 adnate, small, plane, obtusely margined ; hypothecium colourless ; 

 paraphyses distinct, filiform, thick, the epithecium brownish ; 

 asci saccate; spores ellipsoid, 0,013-17 mm. long, 0,008-10 mm. 

 thick ; hy menial gelatine blue then yellow with iodine. — Leight. 

 Lich. Fl. ed. 3, p. 298. Specimen not seen. 



Hab. On rocks. Collected by Dr. Stirton at Blair Athole, 

 Perthshire. 



195. L. mucosa Stirton in Scott. Nat. 1879, p. 17. — Thallus 

 fulvous, gelatinous or evanescent. Apothecia fuscous or fuscous- 

 black, somewhat plane, convex or almost spherical, small ; 

 hypothecium fuscous ; paraphyses conglutinate, indistinct, apices 

 colourless, not clavate ; spores ellipsoid, 0,007-10 mm. long, 

 0,004-5 mm. thick ; hymenial gelatine blue then dirty with 

 iodine. — Leight. Lich. Fl. ed. 3, p. 545. Specimen not seen. 



Hab. On decayed wood. Collected by Dr. Stirton near Ben Doran, 

 Argyll. 



196. L. oxyspora Nyl. in Act. Soc. Linn. Bord. ser. 3, i 

 p. 391 (1856.) — Apothecia minute, plane or slightly convex 

 black or brownish-black, immarginate, dark within ; hypothecium 

 brownish ; paraphyses concrete ; spores ellipsoid-fusiform, 0,014-20 

 mm. long, 0,005-7 mm. thick ; hymenial gelatine, especially the 

 asci, bluish with iodine. — Cromb. Lich. Brit. p. 92 ; Leight. 

 Lich. Fl. p. 357 ; ed. 3, p. 384. Abrothallus oxysporus Tul. in 



