152 LKCANO-LKCIDEEI [BACIDIA 



Tervoe and Carrigoguiiiiel, near Limerick ; Shane's Castle, Antrim ; 

 Connemara, Galway. 



Var. porriginosa A. L. Sni. — Tliallus as in the type. 

 Apothecia reddish-flesh-coloured, the margin white-suffused, at 

 length convex and immarginate ; spores .'3-7-septate, 0,048- 

 62 mm. long, 0,003-35 mm. thick. — Lichen porriginosus Turn, in 

 Trans. Linn. Soc. viii. p. 94, t. 8, f. 4 (1807). Lecidea luteola 

 v&r. porriginosa Cronib. Lich. Brit. p. 73 (1870). L. rubella var. 

 porriginosa Cromb. in Grevillea xxii. p. 58 (1893). 



Distinguished by the white marginal pruina, ultimately evan- 

 escent, which gives the apothecia much the aspect of those of 

 B. rosella. 



Hah. On trunks of trees, chiefly elms, in maritime and upland 

 tracts. — Distr. Seen from only a few localities in E. and S. England 

 and S. Wales. — B. M. Near the Lizard, Cornwall ; near Beedmg 

 Windmill and Hurstpierpoint, Sussex ; Brockenhurst, Hants ; Llan- 

 drindod, Eadnorshire ; Yarmouth, Norfolk. 



5. B. acerina Arnold in Flora xlv. p. 391 (1862).— Thallus thin- 

 nish, coarsely granular, yellowish- or greenish-white. Apothecia 

 prominent, at first concave with a thick rounded margin, 

 becoming plane or sometimes subconvex, flesh-red, then chestnut- 

 brown to blackish ; hypothecium colourless ; paraphyses slender, 

 coherent, more or less violet-blue or violet-red at the apices 

 according to the colour of the apothecium ; epithecium colourless 

 or rose-coloured ; spores acute at each end, straight or spirally 

 curved, up to 15-septate, 0,050-80 mm. long, 0,0025-35 mm. 

 thick. — Lecidea luteola var. acerina Ach. Meth. p. 60 (1803). 

 L. acerina Nyl. in Flora Iv. p. 356 (1872) ; Cromb. in Grevillea 

 xxii. p. 58. 



Included by Crombie in his list of British Lichens. There is no 

 British specimen in the Museum, and I know of no record. 



Hah. On bark chiefly of pine, more rarely of oak. 



6. B. phacodes Koerb. Parerg. Lich. p. 130 (I860).— Thallus 

 efiuse, thin, leprose-granulose, greenish or whitish. Apothecia 

 small, sessile, whitish or pale-reddish, at first almost plane with 

 paler margin, then convex, immarginate ; paraj^hyses concrete, 

 colourless, pale-yeliowish at the apices ; hypothecium colourless ; 

 spores very thinly acicular, faintly 3-15-septate, 0,027-0,040 mm. 

 long, • 002 mm. thick ; hymenial gelatine bluish then wine-red 

 with iodine. — B. albescens Zwackh in Flora xlv. p. 495 (1862). 

 Lecidea luteola var. 8 cMorotica Ach. Lich. Univ. p. 196 (1810). 

 L. arceutina f. chlorotica Cromb. Lich. Brit. p. 73 (1870). L. 

 phacodes Leight. Lich. Fl. p. 343 (1871); ed. 3, p. 363. L. 

 chlorotica Nyl. ex Norrl. in Medd. Sallsk. Faun. & Fl. Fenn. i. 

 p. 31 (1876); Cromb. in Grevillea vi. p. 21; f. albescens Hepp 

 ex Leight. Lich.Fl. ed. 3, p. 546 (1879). 



ExsicG. Larb, Lich. Hb. nos. 108, 183 ; Cromb. n. 173. 



