biatoeina] LECIDEACE-E 121 



p. 69 ; Leight. Lich. Fl. p. 319 ; ed. 3, p. 334. L. anomala 

 Nyl. Lich. Scand. p. 202 (non Ach.) ; Leight. Lich. Fl. p. 318 ; 

 ed. 3, p. 337. Biatora anomala Fr. in Vet. Acad. Haudl. 1822, 

 p. 226. Bilimhia anomala Mudd Man. p. 187 (1861) pro parte. 

 Exsicc. Mudd n. 155. 



Hah. On the bark of trees. — Distr. Not uncommon throughout 

 the British Isles. — B. M. Ulting, Hadleigh and Hockley, Essex ; 

 Chelworth, Wilts ; Ayton, Cleveland, Yorkshire ; Glencar, Kerry. 



20. B. fallax A. L. Sm. — Thallus effuse, thin, subleprose, 

 blackish-green. Apothecia yellowish-flesh-coloured, somewhat 

 convex, becoming immarginate, entirely colourless within ; para- 

 physes slender, distinct ; spores oblong or oblong-fusiform, 

 0,009-13 mm. long, 0,003 mm. thick ; hymenial gelatine blue 

 then violet with iodine. — Biatora fallax Hepp Flecht. Eur. n. 505 

 (1860) (excl. syn). Lecidea fallax Leight. Lich. Fl. p. 320 

 (1871); ed. 3, p. 342. L. cMorotiza Nyl. in Flora xlix. p. 85 

 (1866) (fide Leight. II. e.) ; Cromb. Lich. Brit. p. 70. 



There are no specimens in the British Museum. Hepp plainly 

 indicates the 2-celled spores which exclude it from Lecidea. 



Hah. On elm bark. — Distr. Recorded only from S. England (I. of 

 Wight and Somerset). 



21. B. spodiza A. L. Sm. — Thallus effuse, thin, subopaque, 

 minutely granulate, dark-greyish or inspersed with minute 

 greyish-green granules (K(CaCl) + deep-red). Apothecia small, 

 somewhat convex, immarginate, livid-greyish or pale-livid, colour- 

 less within ; epithecium sordid ; paraphyses not well discrete ; 

 hypothecium colourless ; spores oblong, at times somewhat 

 curved, simple, occasionally obsoletely or spuriously 1 -septate, 

 0,011-17 mm. long, 0,0025-35 mm. thick; hymenial gelatine 

 bluish with iodine. — Lecidea spodiza Nyl. in Flora Ivii. p. 9 

 (1874); Cromb. in Grevillea ii. p. 140; Leight. Lich. Fl. ed. 3, 

 p. 339. 



Closely allied to the following. In the original locality, the thallus 

 spread extensively over the substratum, but was only here and there 

 fertile ; the apothecia in the specimens are somewhat scattered. 



Hab. On an old fir 'paling in a wooded upland district. — B. M, 

 Killin, Perthshire (the only locality). 



22. B. synothea Koerb. Parerg. Lich. p. 144 (1860) (excl. 

 var. chalyhsea).~T\i?i\\\x^ effuse, thin, minutely granulose, greyish- 

 green or whitish (K — , CaCl — ), at times nearly evanescent. 

 Apothecia small, adnate or appressed, convex, subimmarginate, 

 dark-brown, black or blackish ; hypothecium thin, colourless, 

 paraphyses dark at the apices; epithecium K-f violet; spores 

 oblong, ellipsoid-oblong or fusiform, straight or slightly curved, 

 occasionally simple, 0,007-13 mm. long, 0,0025-40 mm. thick ; 

 hymenial gelatine bluish then wine-red with iodine ; spermogones 



