160 LECANO-LECIDEEI [bACIDIA 



thecia small, at first plane with thin entire margin, at length 

 convex and immarginate, black ; paraphyses incrassate at the 

 apices ; epithecium blackish ; hypothecium dark-reddish ; spores 

 baciUiform, straight or slightly curved, 3-7-septate, 0,027-40 

 mm. long, 0,0025-30 mm. thick; hymenial gelatine pale-blue 

 then wine-red with iodine. — Lichen muscorum Weber Spicil. 

 Goefct. p. 183 (1778)?; Swartz Meth. Muse. p. 36 (1781); 

 Relhan Fl. Cantab, p. 424 with fig. ; With. Arr. ed. 3, iv. p. 7 

 pro parte; Engl. Bot. t. 626 (spermogoniiferous). Lecidea muscorum 

 Ach. Meth. p. 33 (1803) pro parte; Hook, in Sm. Engl. FI. v. 

 p. 177 pro parte ; Leight. Lich. Fl p. 342 ; ed. 3, p. 370. 

 L. hacillifera subsp. muscorum Cromb. Lich. Brit. p. 74. 



Exsice. Leight. n. 190 ; Mudd n. 152 ; Larb. Lich. Hb. 

 n. 273 ; Johns, n. 340. 



Differs from the preceding, to which it is closely related, in the 

 colour of the paraphyses and of the epithecium, and more especially 

 in the habitat. 



Hah. Incrusting mosses on the ground and on boulders in maritime 

 and upland situations. — Distr. Not unfreqnent in England; rare in 

 N. Wales, the S.W. Highlands of Scotland, S. Ireland, and the 

 Channel Islands. — B. M. Quenvais, Jersey; ShankHn, I. of Wight; 

 near Hay Tor, Dartmoor, Devon ; St. Merryn, Cornwall ; Pateham, 

 Sussex; Shiere, Surrey; Beeleigh, Essex; Bathampton Downs and 

 Claverton Downs, Somerset ; Tenby, Pembrokeshire ; Gogmagog 

 HiUs, Cambridgeshire ; Thetford Warren, Norfolk ; Shiffiial, Shrop- 

 shire ; Whitman's Hill, near Malvern, Worcestershire ; Dolgelly, 

 Merioneth ; Bedcar, Cleveland, Yorkshire ; Windermere, Westmore- 

 land ; Appin and Ballachulish, Argyll ; Glen Fender, Blair Athole, 

 Perthshire ; Blarney, Cork ; Croghan, Killamey, Kerry. 



22. B. atrosanguinea Th. Fr. Lich. Scand. p. 354 (1874).— 

 Thallus efiiise, very thin, granulose, pale or whitish (K — , 

 CaCl — ), often little visible. Apothecia small, plane, thinly 

 margined, black or blackish ; paraphyses thickish, often bluish 

 at the apices ; hypothecium reddish-brown ; epithecium somewhat 

 blackish ; spores acicular, 3-7-septate, 0,022-44 mm. long, 

 0,0025—35 mm. thick ; hymenial gelatine bluish then wine-red 

 with iodine. — Biatora atrosanguinea Hepp Flecht. Eur. n. 286 

 (1857). Lecidea suhincompta Nyl. in Flora xlviii. p. 147 (1865) ; 

 Cromb. in Greviliea xxii. p. 59. 



Scarcely to be distinguished from B. muscorum except in habitat. 

 There is no specimen in our British collection, but it has probably 

 been overlooked, as it is common on the continent. B. incompta var. 

 a trosanguinea Mudd Man. p. 184 may be a synonym, but a specimen 

 in the herbarium so named by him is identical with B. incompta. 



Hah. On the bark of trees. 



Subsp. oribata A. L. Sm. — Thallus thinly subgranulose- 

 verrucose, greyish-brown. Spores 3-5-septate, 0,023-40 mm. 

 long, 0,003-4 mm. thick ; otherwise as in the species. — Lecidea 

 oribata Nyl. in Flora Ivii. p. 16 (1874) ; Leight. Lich. Fl. ed. 3, 



