ADDITIONS TO THE BRITISH LICHEN-FLORA. 95 



2. A. alpedris, Scliimper. — Steins taller, " very slender, much 

 branched, densely tufted. Leaves crowded, very small, patent on all 

 sides when moist," shorter than in the last species, ovate, obtuse, with 

 laxer areolation, quadrate at margin. Glen Callater (Fergusson), 

 Perthshire (M'Kinlay). 



3. A. obovata, Thed. — Densely tufted, blackish brown, tall and 

 robust. Leaves somewhat like those of alpina, from an imbricating 

 base, ovato-panduriform, gradually lanceolate, nearly smooth, glossy, 

 quite entire at margin, areolation much laxer. Glen Callater (Fer- 

 gusson). 



4. A. alpina, Turner. — Lichenastrum alpinum, Dill. 



** Leaves nerved. 



5. A. rupestris, Turner. — Jnncjermannia rupestris, L. A. RotJdi, 

 Web. and Mohr ; var. /8. spptodrionalis. 



6. A. Grimsidana, Bruch. — Usually regarded as a form of rupestris, 

 but much more robust, rufous-black, the leaves broader, more solid, 

 falcato-secund, and the perigonial leaves broadly ovate, not acuminate. 

 Ingleborough. 



7. A. crassinei'via, Bruch. — In depressed, deep black tufts. Stem 

 prostrate, ascending, very fragile. Leaves crowded, falcato-secund, 

 glossy, oblong at base, gradually subulate in the upper half, apex 

 occupied solely by the stout nerve, which is round in section and papil- 

 lose, margin entire, cells quadrate. Alpine rocks, generally confounded 

 with A. rupestris. 



8. A. falcata, Schimper. — Smaller than last, black, very fragile. 

 Leaves opaque, falcato-secund, from a dilated base, suddenly lanceolate- 

 subulate, nerve flattened, ending at or below the apex, which is erose 

 at margin. Cader Idris and Snowdon (Schimper). Perthshire 

 (M'Kinlay). 



9. A. nivalis. Hooker. 



ADDITIONS TO THE BRITISH LICHEN-FLORA. 

 By TjflE Rev. J. M. Crombie, M.A., F.L.S. 



Since the completion of the MSS. of my ' Lich. Brit. Enum.' in 

 August, 1869, various species and varieties, which could not well be 

 inserted as it passed through the press, have been added to the Lichen- 



