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NEW BRITISH LICHENS. 
Communicated hy the Rev. J. M. Crombie, F.L.S. 
The following new species, recently gathered in Great Britain 
and Ireland, have been recorded by Dr. Nylander, in the “ Flora” 
for 1876, pp. 572-578 
1. Iiecanora subluta. Nyl. — Thallus effuse, whitish, minutely 
granulated; apothecia pale-testaceous, crowded ; spores 0,010-12 
mm. long, 0,005-6 mm. thick; hymeneal gelatine bluish, and 
then the thecae tawny-violet with iodine. Scarcely more than a 
variety of Lecanora galactina Ach., from which it differs in the 
above characters. On dry rocks, Kylemore, Ireland (Larba- 
lestier) . 
F. perspersa. Nyh — Thallus less effuse; apothecia scattered 
(analogous to L. dispersa, Pers.). Along with the type at Kyle- 
more. 
2. Lecanora spodomela. l^yl, — Thallus greyish-brown, thin, 
opaque, subleprose, rimoso-diffract ; apothecia blackish, with 
subentire thalline margin ; spores 8 nee., colourless, ellipsoid, 
usually 1-septate, 0,011-16 mm. long, 0,006-7 mm., paraphyses 
slender, epithecium bluish ; hymeneal gelatine bluish, and then 
violet with iodine. On sandstone rocks, near Kylemore, Ireland 
(Larbalestier). It belongs apparently to the section of L. 
disparata. 
3. Lecidea arridens. Nyl — Thallus white or whitish, very thin, 
plane, rimose, somewhat dispersed (K — , Ca. Cl. — ) ; apothecia of 
a fine rosy- flesh colour, somewhat plane, immarginate, irregular, 
often with a spurious irregular white epithalline margin, internally 
concolorous with the disk; spores 8 nai., ellipsoid, simple, 0,014-18 
mm. long, 0,007-0,010 mm. thick, paraphyses sufficiently slender, 
not crowded, perithecium with the epithecium and hypothecium 
colourless ; hymeneal gelatine tawny wine-red with iodine. On 
decomposed rocks, near Lenane, Galway (Larbalestier). It belongs 
to the section of L. coarctata. 
4. Lecidea paucula. Nyl . — Thallus greenish, very thin, smooth, 
continuous ; apothecia livid-brown, minute, convex, immarginate, 
internally infuscate under the hymenium ; spores 8 nge., ellipsoid, 
simple, 0,006-7 mm. long, about 0,003 mm. thick, paraphyses not 
discrete, epithecium colourless, hypothecium wholly brown ; 
hymeneal gelatine tawny wine-coloured with iodine. On schistose 
mountainous rocks, Kylemore, Ireland (Larbalestier). This species 
belongs to the section of L. hotryoides. 
5. Lecidea thiopsoxa. I^yl . — Thallus sulphur-whitish, granulato- 
conglomerated, consisting of subpulvinate-concrescent granules 
(the pulvinuli somewhat plane, or variously confluent) K x yellow ; 
