38 LECANO-LECIDEEI [lECIDEA 



Form congesta Cronib. MS. — Apothecia minute, convex, 

 crowded, botryose, immarginate ; otherwise as in the type. 



A rather singular form, characterized by the aggregate apothecia, 

 though in the same plants these are occasionally normal, and scattered. 

 It is referred to by Th. Fries Lich. Scand. p. 436. 



Hah. Incrusting mosses on rocks in mountainous districts. — B. M. 

 Craig Calliach, Perthshire ; Ben Bulben, Sligo. 



Var. ^ Templetoni Wainio in Medd. Soc. Faun. & Fl. 

 Fenn. x, p. 38 (1883). — Thallus as in the type. Apothecia sub- 

 moderate, black, slightly shining ; hypothecium thickish, brownish 

 or reddish-black ; spores oblong or obtusely f usiformi-oblong, 

 simple or thinly 1-septate, 0,010-15 mm. long, 0,005-6 mm. 

 thick. — Lecidea Templetoni Tayl. in Mackay Fl. Hib, ii. p. 123 

 (1836); Leight. Lich. Fl. p. 312 ; ed. 3, p. 329. L. sahuleiorum 

 var. Templetoni Cromb. Lich. Brit. p. 71 (1870). Bilimhia 

 Templetoni Mudd Man. p. 189 (1861). 



Usually regarded by British authors as a distinct species. It 

 differs chiefly in the colour of the rather larger apothecia and the 

 frequently uniseptate spores. The violet-coloured granules are present 

 in the epithecium as in the type. 



Hab. Incrusting decayed mosses on rocks and boulders in upland 

 situations. — Distr. Seen from only a very few localities in N. Wales, 

 the S. Grampians, Scotland, and N. Ireland. — i?. M. Cader Idris, 

 Merioneth ; Ben Lawers, Perthshire ; Invermoriston, Invernessshire ; 

 near Belfast, Antrim ; Doughruagh Mt., Galway. 



46. L. semipallens Nyl. in Flora lix. p. 234 (1876).— Thallus 

 effuse, thin, rimulose, sordid-whitish or whitish, glaucous (K -)- 

 yellowish, CaCl — ). Apothecia subminute, convex, immarginate- 

 livid or partly pale, colourless within ; epithecium and hypo- 

 thecium colourless ; spores shortly ellipsoid, minute, 0,006-9 mm. 

 long, 0,0035-45 mm. thick ; hymenial gelatine tawny-wine-red 

 with iodine. — Cromb. in Grevillea v. p. 26 : Leight. Lich. Fl. 

 ed. 3, p. 298. 



Exsicc. Larb. Lich. Hb. n. 68. 



Keadily distinguished from its allies by the minute spores. Exter- 

 nally it is a rather inconspicuous plant from the thallus being often ' 

 scarcely visible and the apothecia very small and more or less scattered. 

 One of the specimens seen is tinged with peroxide of iron. 



Hah. On quartzose and schistose rocks in streams in a mountainous 

 region. — Distr. Found only in W. Ireland. — B. M. Near Kylemore, 

 Lough Inagh, and Twelve Pins, Connemara, Galway. 



47. L. valentior Nyl. in Flora Ix. p. 229 (1877).— Thallus 

 subeffuse, thin, continuous, rimose, greyish or somewhat greenish 

 (K — , CaCl — ). Apothecia small, subplane or convex, immargi- 

 nate or often obtusely submarginate, brown or dark-brown, the 

 margin when present paler ; paraphyses colourless at the apices ; 

 hypothecium dark-brown; spores 0,012-17 mm. long, 0,006-8 



