464 IJCHES"ACET. [LECAXORA. 



1874, p. 16; Cromb. Journ. Bot. 1882, p. 274, is according to 

 Wainio and Arnold a sterile and less developed state of this plant. 



A very distinct species which at first sight seems near L. oculatn, but, 

 as rightly conjectured by Nylander /. c., from sterile specimens, belonging 

 .to this section. The papillae are scattered or here and there crowded, 

 becoming at times entirely leprose. In the very few British specimens 

 neither apothecia nor spermogones, the latter as yet unknown, are 



Hab. Overspreading decayed mosses on the ground in alpine places. 

 -Distr. Very local and rare on one of the S. Grampians, Scotland. 

 B. M. : Ben Lawers, Perthshire. 



N. Apothecia innate, lecanorine or rarely lecideine ; hypothecium 

 usually colourless; spores 8nae or 6nae (rarely 4nae or 2nae), 

 simple, colourless ; hyinenial gelatine variously tinged with 

 iodine. Spermogones with simple sterigmata and acicular, 

 straight or very rarely arcuate spermatia. (Aspicilia Mass. Rich. 

 (1852) p. 36 pro parte.) 



. Gonidial system composed of ordinary eugonidia (Pachyospora 

 Mass. Rich. (1852) p. 42 pro parte). 



159. L. Bockii Fr. fil. Bot. Not. 1867, p. 105. Thallus inde- 

 terminate, either minutely granulose with the granules variously 

 subglobose, or plane and areolato-diffract, olive-brown or brownish- 

 grey (K(CaCl) + reddish) ; hypothallus thin, black. Apothecia 

 sessile, small, at length angular or lineari-compressed, black, the 

 thalline margin entire ; spores ellipsoid, 0,017-25 mm. long, 

 0,011-15 mm. thick; paraphyses slender; epithecium and hypo- 

 thecium brownish ; hymenial gelatine tawny wine-red with iodine. 

 Cromb. Journ. Bot. 1882, p. 274. Parmelia Bockii Rodig. ex Fr. 

 PI. Horn. (1825) p. 285. 



A rather singular plant of this section both as to thallus and apothecia. 

 The subglobose verrticse are usually discrete, and when rubbed are more 

 or less yellow-greenish at the apices. The apothecia are at length as if 

 gyroso-plicate, whence Fries (Lich. Eur. p. 151) observed that, if normal, 

 the plant would belong to a distinct genus. Its true systematic place, 

 however, is shown by Nylander, Flora,' 1876, p. 233 (cfr. Flora, 1879, 

 p. 204), s. n. Lecanora sophodopsis, under which synonym the first com- 

 plete diagnosis is given. The British specimens in which neither the 

 thallus nor apothecia are well developed belong to a form pauper at a 

 Nyl. in litt. The spermogones are here and there visible, with spermatia 

 straight, 0,0045 mm. long, 0,0005 mm. thick. 



Hab. On schistose walls in an upland district. Distr. Only sparingly 

 in N.W. England ; no doubt to be detected elsewhere. B. M. : Near 

 Staveley, Kendal, Westmoreland. 



160. L. snperiuscula Nyl. Flora, 1879, p. 355. Thallus inde- 

 terminate, thin, squamuloso-areolate, greyish-brown or dark- 

 brown ; squamules minute, scattered, applanatc or slightly convex, 



