186 LECANO-LECroEEI [lECIOGRAPHA 



Tar. parellaiia A. L. Sm. — Paraphyses usually darker at 

 the tips ; spores remaining longer 1-septate, sometimes also 2- or 

 3-septate. — Lecidea parellaria^jl. in Flora lix. p. 239 (1876); 

 Cromb. in Journ. Bot. xiv. p. 362 (1876) ; Leight. in Trans.. 

 Linn. Soc. ser. 2, i. p. 238, t. 32, figs. 11 & 12 (1878) & Lich. PL 

 ed. 3, p. 387. 



Exsicc. Larb. Lich. Hb. n. 189. 



Hdb. On the thallus of Lecanora parella. — Distr. Eaare in S. 

 England, Wales and W. Irelajid. — B. M. Fairlight, Hastings, Sussex ; 

 near Fishguard, Pembrokeshire ; Diganwy near Conway, Cai-narron- 

 shire ; Doughruagh Mt., Connemara. 



2. L. glaucomaria A. L. Sm. — Apothecia growing on a 

 small pale or brown deformed patch of the host-thallus, small, 

 brownish-black, clustered, sessile, plane with a thickish, paler, 

 often subflexuose margin ; hypothecium blackish-brown, thin, the 

 hymenium brownish ; paraphyses indistinct, coherent, thickened 

 and black at the apices ; spores oblong-ovoid, 3-septate, becoming 

 brownish, 0,021-25 mm. long, 0,008-9 nam. thick ; hymenial 

 gelatine pale-blue then wine-red with iodine. — Lecidea glaucomaria 

 Nyl. in. Bot. Not. 1852, p. 177, fig. 10 i- 1853, p. 99; Carroll 

 in Journ. Bot. iii. p. 291 (1865) ; Leight. in Trans. Linn. Soc. 

 ser. 2, i. p. 238, t. 32, figs. 9 & 10 (1878) & Lich. Fl. ed. 3, 

 p. 389. Specimen not seen. 



Carroll (I. c.) quotes as a synonym of this species, Schismatomma 

 atnylaceum yar. candidum Mudd, a variety founded on Lichen candidns 

 Sm. (Engl. Bot. t. 1138), which was considered by Leighton as 

 synonymous with Ms Lecidea Turncri, and has been already described 

 as Bilimbia Candida (p. 137). 



Hah. Parasitic on the thaUus of Lecanora glaucoma, not to be 

 confounded with Arthonia glaucomaria, which grows on the 

 apothecia of the same lichen. — Distr. Bare in S.W. Wales (Goodwick 

 Bay, Pembrokeshire). 



3. L. plumbina Anzi Comm. Critt. Ital. i. p. 158 (1861).— 

 Apothecia small, black, sessile, solitary or aggregate, plane with 

 a thin margin, then convex and immarginate ; hypothecium 

 brown ; paraphyses conglutinate ; spores narrowly fusiform, 3- 

 septate, brownish, 0,022 mm. long, 0,003 mm. thick. 



The only specimen in the British Museum, collected by Eev. W. 

 Johnson, and marked Lecidea plumhina, has somewhat large spores, 

 0' 020-35 mm. long, 0'003-t mm. thick, the paraphyses are stout, 

 clavate, globose, and bluish-black at the tips. 



Hah. On the thallus of Coccocarpia plumhea. — B. M. Borrowdale, 

 near Keswick, Cumberland. 



4. L. scapanaria A. L. Sm.— Thallus whitish, eflfuse, minutely 

 gi-anular-areolate. Apothecia black, appressed, plane or slightly 

 convex, marginate, blackish within ; hypothecium brownish-black ; 

 spores oblong or ellipsoid-fusiform, brown, 3-septate, 0,019-23 



