LECANORA. | LECANO-LECIDEEI. 479 
Form melanocarpa Stiz. St. Gall. Nat. Ges. 1881, p. 383.—- 
Thallus as in the type. Apothecia at length emersed, prominent, 
black, the thalline margin obliterated——Cromb. Grevillea, xviii. 
p. 58.—Hymenelia Prevostit var. 3. melanocarpa Krempelh. Lich. Fl. 
Bayer. (1861) p. 167. Lichen punctatus Eng. Bot. t. 450 (accord- 
ing to the specimen figured in Hb. Sowerby and the diagnosis 
given). Aspicilia epulotica var. B. punctata Mudd, Man. p. 161. 
Urceolaria cyrtaspis Gray, Nat. Arr. i. p. 458? U. Acharit var. p. 
cyrtaspis Ach., Sm. Eng. FL. v. p. 172. 
Though not described by Krempelhuber J. ¢., the British specimens 
quite correspond with one from his own herbarium. Were it not that the 
young apothecia are as in the type, it would form a good variety. When 
the fruit is immersed it looks much like young states of Lecidea caleivora. 
Hab. On calcareous rocks in upland situations.—Distr. Apparently 
very local and scarce in 8.W. and N. England, as also on the Central 
Grampians, Scotland.—B. M.: Bathampton Downs, Somersetshire ; Tees- 
dale, Durham. Craig Tulloch, Blair Athole, Perthshire. 
Var. 3. affinis Nyl. ew Stiz. St. Gall. Nat. Ges. 188], p. 385.— 
Thallus thin, pale-flesh-coloured or subochraceous. Apothecia very 
minute, at length slightly emersed, pale-testaceous, the thalline 
margin persistent; spores 0,014-18 mm. long, 0,009-13 mm. 
thick.—Cromb. Grevillea, xix. p. 58 (lapsu sub L. epulotica).—Hyme- 
nelia affinis Mass. Geneac. Lich. (1854) p. 13; Symm. Lich. p. 23. 
Regarded as a distinct species by Massalongo and others, this is only a 
variety of L. Prevosti, with which it is subconfluent, differing only in the 
more emergent apothecia and the size of the spores. In the British 
specimens the thallus is at times slightly ochraceous. 
Hab. On calcareous and serpentine rocks in subalpine tracts.— Distr. 
Extremely rare in N. England and on the Grampians, Scotland.—B. M.: 
Teesdale, Durham. Craiz Tulloch, Blair Athole, Perthshire; the Khoil, 
near Ballater, Aberdeenshire. 
b. Gonidial system composed of chrysogonidia, large and concatenate, 
with thickish, firm membrane or perigonidium. (Jonaspis Fr. 
fil. Lich. Scand. i. (1881) p. 273.) : 
179. L. epulotica Nyl. in Cromb. Lich. Brit. (1870) p. 55 (excl. 
var.).—Thallus determinate or subeffuse, thin or very thin, con- 
tinuous or rimulose, pale or pale-whitish (K—, CaCl—). Apothecia 
innate, somewhat concave, submoderate, pale or pale-rose-coloured ; 
the thalline margin thickish, often circumcised from the thallus ; 
spores ellipsoid or subgloboso-ellipsoid, 0,018-20 mm. long, 0,010- 
11 mm. thick; hymenial gelatine bluish with iodine.—Leight. Lich. 
Fl. p. 212 pro parte, ed. 3, p. 197 pro parte.—Aspicilia epulotica 
Mudd, Man. p. 161 pro parte, t. 3. f.54. Gyalecta epulotica Ach. 
Lich. Univ. (1810) p. 151, t. i. f. 7 (secundum specimen primarium 
ex Anglia). 
Externally not unlike states of L. lacustris, with which it is apt to be 
