202 GRAPHIDEI [lECANACTIS 



Worcestershire ; Bradgate Park, Leicestershire ; HarboroTigh Magna, 

 Warwickshire ; Nannan, Dolgelly, Merioneth ; Abdon and Hangh- 

 mond Hill, Shropshire ; Ickworth, Suffolk ; Nottinghainshire ; Derby- 

 shire ; Kildale, Cleveland, Yorkshire ; Castle Bernard Park, Bandon, 

 Cork ; Derryquin, Kerry ; Adare Abbey, Limerick. 



Var. saxicola A. L. Sm. — ThaUus greyish-green, thin, fur- 

 furaceous. Apothecia black, sessile, greenish-pruinose or naked, 

 otherwise as in the species. Schismatomma premneum var. saxi- 

 colum Mudd Man. p. 222 (1861). Lecidea premnea f. saxicola 

 Leight. lich. Fl. ed. 3, p. 365 (1879). 



Exsicc. Leight. n. 185 ; Mudd n. 198 ; Larb. Lich. Hb. n. 73. 



Differing mainly in the habitat. Leighton distingnishes two 

 other saxicolous forms : teichogena and crenatula (Lecidea premnea 

 f. teicliogena Xyl. ex Leight. I. l., and f. crenatulu JCyl. ex Leight. 

 1. c), both with scanty or evanescent thallus, the apothecia naked, 

 the margin somewhat crenulate or flexuose in the latter. 



Sab. On rocks, walls, &c. — Distr. Bare in the Channel Islands, 

 England and W. Ireland. — B. M. La Moye, Jersey ; Ventnor, I. of 

 Wight; Kesscliffe, Shropshire; Airyholme Wood, Cleveland, York- 

 shire ; Doughruagh Mt., Kylemore, Connemara, Galway. 



2. L. abietina Koerb. Syst. Lich. Germ. p. 276 (1855). — 

 Thallus white or greyish-white, effuse, thin, furfuraceous (K — , 

 CaCl — ). Apothecia moderate hi size or larger, sessile, with a 

 thickish, prominent margin, black, but thickly whitish- or 

 pale-yellowish-pruinose ; hypothecium black ; paraphyses slender 

 conglutinate ; epitheciiun brownish ; spores acicular-fusiform, 

 3-sept-ate, 0,035-40 mm. long, 0,004-4 mm. thick ; hymenial 

 gelatine slightly bluish then wine-red with iodine. — Lichen 

 abietinus Ach. in Vet. Acad. Handl. xvi. p. 139, t. 5, £. 7 

 (1795). Sphseria leucocephala Pers. Syn. Fung. Add. p. xxvii. 

 (1801) (spermogoniiferous). Yemicaria leucocephala Ach. Meth. 

 p. 116 (1803); Borr. in Engl. Bot. Suppl. t. 2642, f . 2 ; 

 Hook, in Sm. Engl. Fl. v. p. 152 ; Tayl. in Mackay Fl. ffib. ii. 

 p. 90. Pijrenothea leucocephala Fr. Lich. Eur. p. 450 (1831); 

 Leight. Angioc. Lich. p. 65, t. 28, If. 1 & 2. Lecidea abietina Ach. 

 Lich. TJniv. p. 188 (1810) ; S. F. Gray Nat. Arr. i. p. 468 ; Hook, 

 in Sm. Engl. Fl. v. p. 179 : Cromb. Ldch. Brit. p. 90 ; Leight. 

 Lich. Fl. p. 330 ; ed. 3, p. 354. Schismatomma abietimim !Massal. 

 Ric. Lich. p. 56, f. 102 (1852) ; Mudd Man. p. 223. 



Exsicc. Leight. nos. 163 & 164 ; Mudd n. 200 ; Johns, n. 349. 



Differs from the preceding in the dense whitish pmina covering 

 more especially the apothecia. The spermogones {Spharia leuco- 

 cephala) which have rather large spermatia (0,012-16 mm. long, 

 0,003-4 mm. thick), are sometimes alone present, and resemble small 

 whitish-grey globules. Leighton (Angioc. Lich. pp. 66 & 67, t. 28, 

 ff. 6 & 7) describes two somewhat similar forms : Pyrenothea rudis 

 {Exsicc. n. 102 as P. vermicellifera) and P. aphanes {{'ermcaria 

 rudis and T'. aphanes Borr. Engl. Bot. Suppl. t. 2642, ff. 1 and 3 

 (1880) ). These are also quoted by Hooker in Sm. Engl. Fl. v. p. 151, 



