8 LECANO-LECIDEEI [gYALBCTA 



Ireland. — B. M. Lyndhurst, New Forest, Hants; Ilsham, Torquay, 

 Devon ; near Penzance, Cornwall ; Glynde, Hurst Wood, Tunbridge 

 Wells, and Lavington Common, Sussex ; Kemble, Gloucestershire ; 

 near Cambridge ; Twyoross, Leicestershire ; Ingleby, Cleveland, York- 

 shire ; Castlemary, Cork ; Killamey and Derryquin, Kerry ; Tervoe, 

 near Limerick ; Dromoland, Clare ; Curraghmore, Waterford. 



6. G. Plotovii Koerb. Syst. Lich. Germ. p. 171 (1855).— 

 Thallus effuse, very thin, subleprose, greyish, often evanescent 

 (K— , CaCl — ). Apothecia subminute, urceolate, pale-flesh- 

 coloured, the margin thickish, entire, whitish; hypothecium 

 colourless ; spores 8nate, ellipsoid, irregularly submuriform, 

 0,011-13 mm. long, 0,008-9 mm. thick; hymenial gelatine pale- 

 bluish with iodine. — G. truncigena Mudd Man. p. 167 (1867) pro 

 parte. G. Wahlenhergiana var. /B Leight. Angio. Lich. p. 86, 

 t. 13. f. 3 (1851) (non Ach.). Lichen tricolor With. Arr. ed. 3, iv. 

 p. 23 pro parte, t. 31. f. 6 (1796). Lecidea querceti Nyl. Lich. 

 Scand. p. 191 (1861) ; Cromb. in Grevillea xii. p. 60. L. Floiovii 

 Carroll in Journ. Bot. iii. p. 289 (1865); Cromb. Lich. Brit, 

 p. 63 ; Leight. Lich. Fl. p. 353 ; ed. 3, p. 382. 



Exsiec. Mudd n. 140. 



Differs from the preceding, for which it is apt to be mistaken, in 

 the smaller apothecia and in the form of the more divided, smaller 

 spores. It is evidently the plant primarily intended by Withering as 

 his Lichen tricolor, as appears not only from the specimens in his 

 own herb, but also from his diagnosis — "saucers very minute, 

 orange-coloured, deeply hollowed, like the cup of a Peziza, the border 

 pale-brown." 



Hah. On the smooth trunks of trees, elm and ash, in wooded 

 upland tracts. — Distr. Local and scarce in England, N. Wales, the 

 S.W. Highlands of Scotland and S. Ireland. — B. M. Near Glynde 

 and Hurst, Sussex ; Lustleigh, Devon ; Stowell Park, Gloucester- 

 shire ; Castle Moreton, near Malvern, Worcestershire ; Bilsdale, 

 Yorkshire ; Levens Park, Kendal, Westmoreland ; Barcaldine, Argyll ; 

 Blarney, Cork; Castleconnel, Limerick. 



7. G. corticola A. L. Sm. — Thallus effuse, very thin, sordid- 

 greenish (K— , CaCl — ), often obliterated. Apothecia minute, 

 concave, at length slightly prominent, pale-red or subtestaceous, 

 the margin subconcolorous ; paraphyses slender ; hypothecium 

 colourless; spores 24-32nate, fusiform, 3-7 -septate, 0,016-34 

 mm. long, 0,005-7 mm. thick; hymenial gelatine pale-bluish 

 with iodine. — PacJiyphiale corticola Lonnr. in Flora xli. p. 612 

 (1858). Lecidea congruella Nyl. Lich. Scand. p. 191 (1861). 

 Cromb. in Grevillea xxii. p. 8. 



Externally somewhat similar to the two preceding species, but very 

 distinct in the number septation and form of the spores. In the 

 single British specimen gathered, which is only sparingly fertile, the 

 thallus is but little visible. 



Hab. On trunk of pine in wooded mountainous district. —.B. M. 

 Craig Calliaoh, Killin, Perthshire. 



