] 83 LICHENES. [Lecanora. 



the edges plicate, apothecia small terminating the granulations 

 the border entire at length depressed the disk dark brown. 

 Borr. — Ach. Syn. p. 155. Borr. in E. Bot. Suppl. t. 2262. 

 /. 2. — Lichen aipospilus, Wahl. Lapp. p. 409. t. 27. /. 2. 



Rocks at Bamburgh, and Staples' islands, on the coast of Northum- 

 berland, Mr. IV. Robertson. Maritime rocks, Orkney ? Mr. Borrcr. — 

 "An extremely remarkable Lichen, a link, apparently, between the 

 genera Lecanora and Isidium, approaching very closely to the latter in 

 the structure of the thalhis." Borr. 



9. L. spodophda, Ach. (close branchy-clustered Lecanora); 

 crust tartareous areolate formed of concrete branch-like granu- 

 lations grey greenish when wet, apothecia small terminating 

 the granulations, the border slightly crenulate at length de- 

 pressed the disk (dark) reddish-brown. Borr. — Ach. Syn. 

 p. 155. Borr. in E. Bot. Suppl. t. 2662. / 3.— Lichen spodo- 

 phceus, Wahl. Lapp. p. 409. 



Growing with L. aipospila on the coast of Northumberland, Mr. W. 

 Robertson. — This species bears some general resemblance to L. sophodes ; 

 but its real structure, although more minute in all its parts, is most 

 similar to that of L. aipospila. 



10. L. sophodes, Ach. (obscure black-shielded Lecanora) ; crust 

 orbicular granulated dull greenish ash-colour, apothecia slightly 

 convex clustered black brown when moist with an elevated 

 entire border. Ach. Syn. p. 153. — Lichen sophodes, Ach. Prodr. 

 —E. Bot. t. 1791. 



Common on trees, in Sussex, Mr. Borrer. About Yarmouth, Mr. 



D. Turner. 



11. L. tuberculosa, Ach. (warted fibrous-edged Lecanora); 

 crust greenish-grey formed of globular granulations with a 

 radiated marginal fringe, apothecia sessile flattish glaucous- 

 black with a thick elevated smooth border. Sm. — -Ach. Syn. 

 p. 164. — Lichen tuberculosus, E. Bot. Suppl. t. 1733. 



Common on flint-stones, on the Sussex Downs, Mr. Borrer. 



12. L. aspersa, Borr. (powdered warty Lecanora); substratum 

 of the crust filmy black, warts scattered tartareous slightly 

 convex olive-green with pale green soredia, apothecia small 

 elevated the margin thick inflexed the disk black. Borr. in 



E. Bot. Suppl. t. 2728. 



On flints, near Bury St. Edmunds, Rev. G. R. Leathes. Abundant 

 near Portslade, Sussex, Mr. Borrer. — Fruit rare. " This Lichen has 

 been mistaken for L. tuberculosa, E. Bot. t. 1733; but the warts of the 

 thallus of that species are very prominent, even, and not powdery, and 

 the substratum is of the same colour, not black : the apothecia also are 

 more conspicuous and of a glaucous hue. In the black substratum, and 

 in the dispersion of the warts, L. aspersa resembles Lecidea atro-alba, 

 E. Bot. t. 2336, and L. verruculosa, t. 2317; but, besides the generic 

 characters, it differs from both in the colour of the warts, and in the 

 powdery soredia. The apothecia are most like those of some imperfect 

 states of L. atra, t. 949, but the structure of the thallus is very dis- 

 similar." Borr. 



