LICCANOKA.J LKCANO-LECIDEEI. 441 



lecaiioriiie, small, piano or slightly convex, reddish-tlosh-colourcd or 

 reddish, the thallino margin persistent, crenulato ; spores ellipsoid, 

 0,008-12 mm. long, 0,0OG-8 mm. thick; hymenial gelatine bluish 

 (the thecal often persistently), then tawiiy-wine-red with iodine. 

 — Cromb. Grevillca, xviii. p. 09 ; Leight. Lich. El. p. 187 pro 

 l)arte, cd. 3, p. 174 pro parte. — Lccanora varin subsp. sarcoj^is 

 Cromb. Lich. Erit. p. o2 pro parte. Fannelia sairopis Wahl. in 

 Ach. Meth. Suppl. (1803) p. 40. To this is also referable />. sr//-- 

 vopis subsp. hoiiiopis'i^yl. Flora, 1872, p. 2-31 (cfr. Nyl. Flora, 1881, 

 p. 184). 



A plant apparently constant to its type, ai.d I'rom the characters given 

 sufficiently diverse from the others of this suksectiou. It is also, and 

 more especially, distinguished by the form of the spermatia. The apo- 

 thecia in our specimens are numerous, and the spermogones are not un- 

 frequent. These have the spermatia crescent-shaped, 0,U0L>-11 mm. long, 

 0,002o mm.;thick (e,v Nyl. in litt.). 



Hub. On old (indurated) pales in upland districts. — Distr. Only 

 sparingly in N. England and the Scottish Highlands. — B. M. : Near 

 Carlton, Cleveland, Yorkshire. Glen Lyon, Perthshire ; Clen Dee, 

 liraemar, Aberdeenshire ; Glen Morriston, Inverness-shire. 



129. L. eflfusa Ach. Lich. Univ. (1810) p. 386.— ThaUus effuse, 

 thin, subleprose, sordid-yellow (K-|- yellowish, CaCl — ), at times 

 subevanesceut. Apothecia lecanorine, place, pale-reddish-brown ; 

 the thalliue margin thin, subpulverulent or subcrenulate, at length 

 convex, biatorine, immarginate ; spores 0,008-12 mm. long, 0,005- 

 7 mm. thick. — Cromb. Grevillea, vi. p. 21. — Lichen effasus Pers. in 

 Hoti'm. Deutsch. Fl. ii. (1795) p. 174. Lecanora varia /3. sarcopis 

 Mudd, Man. p. 150 pro maxima parte ; Cromb. Lich. I3rit. p. 52 pro 

 maxima parte ; Leight. Lich. Fl. p. 187, et ed. 3, p. 174 pro maxima 

 parte. — Brit. Exs. : Cromb. n, 161. 



According to Nylander (Flora, 1872, p. 249) this may be only a variety 

 of the preceding with less developed thallus. It differs also in the 

 apothecia becoming biatoroid. The spermogones are as in L. sarcopis, 

 but are less frequently seen, ai least in our specimens. 



Hab. On old pales, rarely decorticated stumps of trees, in maritime, 

 lowland, and upland tracts — Distr. Here and there throughout England ; 

 rare in Scotland and the Channel Islands ; not seen from Ireland. — - 

 B. M. : Beauport Bay, Island of Jersey. Near Lewes, Sussex ; Lyud- 

 hurst, New Forest, Hants ; Penzance, Cornwall ; Gopsall Park, Leicester- 

 .shire ; Norton, near Worcester; near Ay ton, Cleveland, Yorkshire; 

 Teesdale, Durham ; Levens, Westmoreland. Loch Katrine and Killin, 

 Perthshire ; Crathie, Braemar, Aberdeenshire. 



130. L. argopholis Ach. Lich. Univ. (1810) p. 346; Nyl. Lich. 

 Scand. p. 10(). — Thallus subdetermiuate, verracoso-(glebuloso-) 

 granulate, firm, whitish-straw-coloured, whitish-yellow or whitish, 

 the granules continguous, imbricate, subcrenate at the circnmfereuce 

 (K-|- yellow, CaCl— ). Apothecia moderate, sessile, plane or convex, 

 brownish-black, the thalline margin entire or crenate, persistent ; 



