leciographa] lecideace^ 185 



t. 22, figs. 17-20 (1876) & Lich. PL ed. 3, p. 388; Cromb. in 

 Journ. Bot. Iviii. p. 141 (1875). 

 Exsicc. Larb. Lich. Hb. n. 38. 



Allied to Lecidca e^ispila Nyl. (Lich. Pyr. Or. p. 65), which occurs 

 on the same Pertusaria in E. Pyrenees, differing, however, in being 

 athalline and smaller, in the darker epithecium and hypothecium, as 

 also in the number of the rather thicker spores. The apothecia are 

 usually somewhat scattered. 



Hah. On the thallus of Pertusaria Wulfenii var. rupicola in 

 mountainous districts. Distr. Only a few localities in N. Wales, the 

 S. Grampians, Scotland and W. Ireland. — B. M. Llanbedrog, near 

 Pwllheli, Merioneth ; The Trossachs, Perthshire ; Achosragan Hill, 

 Appin, Argyll ; near Kylemore and Lettermore, Connemara. 



77. LECIOGRAPHA Massal. Gen. Lich. p. 14 (1854). Dacty- 

 lospora Koerb. Syst. Lich. Germ. p. 271 (1855); Mudd Man. 

 p. 223. (PI. 14.) 



Thallus none. Apothecia parasitic on the thallus of other 

 lichens, immersed then superficial, discoid black and car- 

 bonaceous ; hypothecium dark-coloured ; spores 8 in the ascus, 

 oblong-ellipsoid or oblong-fusiform, 3-septate, brown. 



1. L. parasitica Massal. I.e. & Symm. Lich. p. 66 (1855). — 

 Apothecia small, sessile, at first somewhat concave, then plane, 

 margined, black, the margin thin, entire, prominent, slightly 

 shining ; hypothecium dark-reddish-brown ; paraphyses con- 

 glutinate, thicker and reddish-brown at the tips ; spores oblong- 

 cylindrical, 3-septate, brown, 0,009-15 mm. long, 0,0035-45 mm. 

 thick; hymenial gelatine deep-blue with iodine. — Lecidea parasitica 

 Floerke Deutsch. Lich. 6, p. 3 (1819); Cromb. Lich. Brit. p. 94; 

 Leight. Lich. Fl. p. 357 ; ed. 3, p. 387. L. inspersa Tul. in Ann. 

 Sci. Nat. ser. 3, xvii. p. 118 (1852). L. ZwacJchii Cromb. in 

 Journ. Bot. xiv. p. 362 (1876)? Dactylospora inspersa Mudd 

 Man. p. 224, t. 4, fig. 85 (1861). 



Exsicc. Leight. n. 183 ; Larb. Lich. Cjesar. n. 86. 



When corticolous not to be confounded with Tracliylia stigonella, 

 to which it bears considerable resemblance in its habit and external 

 appearance, but from which it is separated by the spores. The 

 apothecia are either scattered or often aggregate. 



Hah. On the thallus of Lecanora parella and Pertusaria communis 

 in maritime and upland situations. — Distr. General and not uncommon 

 in England ; apparently rare in the Channel Islands, Wales and 

 S. Ireland ; not seen from Scotland. — B. M. La Moye, Island of 

 Jersey ; Fairlight, Hastings, Sussex ; near Lyndhurst, New Forest, 

 Hants ; Totnes, Lydford, and near Newton Bushell, Devon ; Tilgate, 

 Sussex ; Chedworth Woods, Gloucestershire ; near Twj^cross, Leicester- 

 shire ; Hale End and near the Ragged Stone, Malvern, Worcester- 

 shire ; Harboro' Magna, Warwickshire; Barmouth and near Nannau, 

 Dolgelly, Merioneth ; Aber, Carnar^'onshire ; Cliffrigg, Cleveland, 

 Yorkshire ; Brown's Demesne. Riverstov/n, Cork ; Muckross, Killamey, 

 Kerry. 



