LBCIDBA] LECIDEACEiE 103 



From L. expansa Nyl. it is similarly separated by the hypothecium 

 and also by the larger immarginate apotheoia ; 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. Smmnit 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 + 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. 



Hcd). On rooks. Collected by Larbalestier at Sakock Eoad, 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 ; hymenial gelatine blue then yellow with iodine. — Leight. 

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



Sab. 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. — Oromb. Lich. Brit. p. 92 ; Leight. 

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



