44 LECANO-LECIDEEI [lECIDEA 



bluish-black line. Apothecia small, scattered, reddish-brown, 

 sessile, plane with a thin entire margin ; paraphyses slender, 

 concrete : hypothecium colourless or yellowish ; spores ellipsoid 

 or ovate, rather large, 0,014-16 mm. long, 0,008-14 mm. thick; 

 hymenial gelatine blue with iodine. — Carroll in Nat. Hist. Rev. 

 vi. p. 526, t. xxix. figs. 2, 3 (1859); Cromb. Lich. Brit. p. 64;. 

 Leight. Lich. Fl. p. 298 ; ed. 3, p. 307. 



Distinguished from others in this group by the smooth, subdeter- 

 minate thallus, and by the spores which are thick-walled and very 

 distinct. 



Hab. On the bark of trees. — Distr. Seen from only a few localities 

 in S. England and Ireland. — B. M. Tregawn, Cornwall ; Hustyn's 

 Wood and Torquay, Devon ; Castle Bernard Park, Cork ; Mangerton, 

 Killarney and Blackwater Bridge, Kerry ; Mount Shannon, Limerick ;. 

 Killaloe, Clare. 



59. L. breadalbanensis Stirton in Trans. Glasgow Soc. Nat. 

 1875, p. 87. — Thallus black or brownish-black, thin, somewhat 

 wrinkled. Apothecia black or brownish-black, small, convex, 

 rugose, immarginate, often conglomerate ; hypothecium pale or 

 reddish in thin section ; paraphyses indistinct, conglutinate, 

 reddish-brown at the apices ; spores 4-8 in the ascus, ellipsoid, 

 with a double epispore 0,016-22, rarely -25 mm. long, 0,011-14 

 mm. thick ; hymenial gelatine deep-blue with iodine. — Leight. 

 Lich. Fl. ed. 3, p. 298. Specimen not seen. 



Hah. On mosses and hepatics. Collected by Dr. Stirton on Ben 

 Lawers. 



60. L. poliodes Nyl. in Flora Iviii. p. 10 (1875).— Thallus 

 blackish-grey or greenish-grey, thin, opaque, wrinkled, becoming 

 rimose. Apothecia minute, blackish, convex, immarginate ; 

 hypothecium dark-reddish ; paraphyses concrete ; epithecium 

 colourless ; spores ellipsoid, small, 0,007—9 mm. long, 0,0025— 



45 mm. thick ; hymenial gelatine wine-red with iodine. 

 Exsicc. Larb. Lich. Hb. n. 227. 



Hab. On rocks in shady streams. — B. M. Above Lough Feagh, 

 Connemara, Kerry (the only locality). 



61. L. rufofusca Nyl. in Flora Hi. p. 409 (1869).— Thallus 

 effuse, whitish-yellow or brownish, thickish, forming a granulose 

 crust with a whitish hypothallus. Apothecia small, dark-reddish- 

 brown, plane and marginate, becoming convex and immarginate ; 

 hypothecium yellow ; paraphyses concrete ; epithecium yellowish- 

 brown ; spores ellipsoid-oblong, 0,0095-150 mm. long, 0,0055— 

 65 mm. thick ; hymenial gelatine wine-red with iodine. — Leight. 

 Lich. Flora ed. 3, p. 266. Biatora rufofusca Anzi Catal. Lich. 

 Sondr. p. 76 (1860). 



Exsicc. Larb. Lich. Hb. n. 102. 



Hab. On the barks of trees. — B. M. Near Kylemore, Connemara 

 and Ballynahinch, Galway (the only localities). 



