L1XAXORA.] LECAXO-LECIDEEI. 489 



forma eucarpa Leight. Lich. Fl. p. 183, ed. 3, p. 168. Lecidea 

 eucarpa Nyl. Bot. Not. 1863, p. 163. 



Looks as if it descended from L. glaucocarpa (athalline), but from the 

 type of the apothecia it belongs to this section. These are either simple 

 and umbilicately affixed or several connate in a common umbilicus. The 

 lower stratum "of the hypothecium, as observed by Nylander, is thin, 

 black. The peculiar fructification at once distinguishes it from all the 

 allied species. 



Hab. On granitic rocks in maritime districts. Distr. Very local and 

 scarce in the Channel Islands and those of S.W. England. B. M. : West 

 coast of Guernsey. Scilly Islands, Cornwall. 



r 195. L. privigna Nyl. Flora, 1873, p. 69. Thallus obsolete. 

 Apothecia plane, small or submoderate, usually approximate, rounded 

 or angulose, brick- red when moist, blackish when dry, the margin 

 black, entire or flexuose, persistent ; spores 0,003-4 mm. long, 

 0,0015 mm. thick; hypothecium colourless; paraphyses slender, 

 jointed, brownish at the conglutinate apices ; hymenial gelatine 

 bluish, then sordid or slightly tawny with iodine. Cromb. Grevillea, 

 xix. p. 58. Lecanora fuscata var. privigna Cromb. Lich. Brit. p. 56. 

 L. squamulosa forma priviyna Leight. Lich. Fl. p. 185, ed. 3, p. 170. 

 Lecidea privigna Ach. Meth. Lich. (1803) p. 49 ; Sm. Eng. Fl. v. 

 p. 184. Lichen simplex Eng. Bot. t. 2152 (two right-hand figs.). 

 Brit. Exs. : Larb. Lich. Hb. n. 254. 



Apparently a distinct species intermediate as it were between L. 

 pruinosa form nuda and less plicate states of L. simplex. From both, 

 however, it differs in the characters given, though more nearly allied to 

 the latter. The apothecia are frequently in groups with the margin 

 constantly black. 



Hab. On arenaceous and granitic rocks in maritime tracts. Distr. 

 Only here and there in the Channel Islands, S. and N. England, and the 

 E. coast of Scotland. B. M. : St. Brelade's Bay, Island of Jersey ; Island 

 of Alderney. Tyneside, near Bywell, Northumberland. South of Bay 

 of Nigg, Kincardineshire ; Old Machar, near Aberdeen. 



196. L. hypophaea Nyl. Flora, 1870, p. 34. Thallus effuse, thin, 

 granulato-unequal, greyish or greyish-green (K ). Apothecia 

 submoderate, lecideine, blackish or dark-sanguineous, at first plane 

 with the margin subcrenulate or unequal, black, at length convex 

 with the margin excluded ; paraphyses moderate or thickish, jointed, 

 amber-brown at the apices ; hypothecium colourless, infuscate 

 beneath; spores oblong, 0,(^)5-6 mm. long, 0,0015 mm. thick; 

 hymenial gelatine bluish, then wine-red or tawny-reddish with iodine. 

 Cromb. Journ. Bot. p. 97 ; Leight. Lich. Fl. p. 186, ed. 3, p. 172. 



Very near the preceding species, but differs in the character of the 

 paraphyses and the darker lower stratum of the hypothecium. It would 

 differ also externally in the presence of a thallus were this really proper, 

 which is rather doubtful. The two British specimens are well fertile. 



Hab. On granitic stones of a wall in a lowland submaritime district. 

 Duttr. Extremely local and rare in N.E. Scotland. B. M. : Near Old 

 Machar Cathedral, Aberdeen. 



