LECANORA.] LECAXO-r.KCIDEEI. 4G7 



ITah. On rocks and walls in maritime and mountainous tracts. — Distr, 

 Rather local, tliouyrh plentiful where it occurs in Great J>ritain, Ireland, 

 and the Channel Islands. — B. M. : La Coupe, Island of Jersey : Moulin 

 Huet Bay, Guernsey. Bray Hill, St. Minver, Cornwall ; Cader Idris and 

 Barmouth, Merionethshire; Snowdon, Carnarvonshire : Teesdale, Durham. 

 Barcaldine, Argyleshire ; Glen Lochay, Ivilliu, and Bjn Lawers, Perth- 

 shire ; Portlethen, Kincardineshire. Lambay Island, co. Cork ; co. 

 AVicklow, 



Form lepidota Leight. (rrevillea, iii. (1875) p. IIG ; Lich. Fl. 

 ed. 3, p. 173. — Thallus greyish-brown, squamuloso-areolate, the 

 squaraules convex, ofteu rugose. Apothecia innate, small ; the 

 thalline margin persistent. — Cronib. Grevillea, xix. p. 57. 



Differs in the more srjuaniulose an I darker thallus, which renders it a 

 good form, if not a distinct variety. Both apothecia and spermogones 

 are frequent in the specimens seen. 



Hab. On maritime rocks and by lakes in mountainous districts. — 

 Distr. As yet only in the Channel Islands and X. Wales. — B. M. : 

 Beauport, Island of Jersey. Llyu Diuas, near Beddgelert, Carnai-von- 

 shire. 



Subsp. L. epiglypta Xyl. Flora, ISSl, p. 4. — ThaUus rimoso- 

 areolate, dark-greyish, the areoliB plane. Apothecia at length 

 prominent, somewhat convex, the epithecium crowdedly corrugate 

 or ruguloso-insculpt : otherwise us in the type. — Cromb. Grevillea, 

 xix. p. 57. 



Well distinguished by the peculiar character of the epithecium, which 

 gives the fruit as it were a gyrose appearance. This, however, is not 

 visible in the young urceolate apothecia. The spermogones are frequent, 

 with spermatia straight, 0,01-5-2.3 mm. long, 0,0005-6 mm. thick. 



Hah. On schistose rocks in maritime and moimtainons districts. — Distr. 

 Only very sparingly in X. Wales and the S. W. Highlands of Scotland. 

 — B. M. : Cader Idris, Merionethshire. Barcaldine, Argyleshire. 



16-1. L. intermritans Xyl. Flora, 1S72, pp. 354, 429.— Thallus 

 determinate, diffracto-areolate, \\hitish or ctesio-greyish (K-|- yellow, 

 then rusty red, CaCl — ). Apothecia submoderate, immersed, con- 

 cave, blackish : the thalline margin entire, at length inflexed ; spores 

 usually 8n:e, 0,023-34 mm. long, 0,009-0,015 mm. thick: hy- 

 menial gelatine bhiish, then wine-red with iodine. — Cromb. 

 Grevillea, xix. p. 57. 



Closely allied to the preceding species, but differs in the larger spores 

 and the much shorter spermatia, which are 0,007-9 mm. long, scarcely 

 0,001 mm. thick. Xylander says that the thallus in the E. Pyrenees is 

 at times milky-white, and often occurs iusidated, from the intrusion of 

 rudimentary thalli of other species. In the single British (^fragmentary) 

 specimen seen it is associated with Lecaitora atra. 



Hab. On schistose rocks in a maritime district. — Distr. Extremely local 

 and scarce in W. Ireland. — B. M. : Xear Kylemore, Connemara, co. 

 Galwav. 



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