Lecanora.] LICHENES. 189 



13. L. glaucoma, A eh. (wall-eyed Lecanora}; crust tarta- 

 reous black uneven hard greyish-white, apothecia depressed 

 crowded at length tumid deformed black-brown or buff with a 

 strong glaucous tinge and a wavy border. Ach. Sy?i, p. 165. — 

 Lichen glaucoma, E. Bot. t. 2150. — L. rupicola, Dicks. — L. vari- 

 ous, Dav. in Linn. Trans, v. 2. p. 284. t. 28. /. 3. — " L. compo- 

 situs, With. Bot. Arr. v. 4. p. 13. £.31. /. 2, (body 



On whin-stone, or slate rocks, in mountainous countries. 



14. L. thelostomct, (umbilicate-shielded Lecanora); crust 

 tartareous thin continued brown minutely cracked, apothecia 

 sessile hemispherical umbilicated reddish (-brown ) with a 

 thick elevated even border. Sm. — Lichen thelostomus, E. Bot. 

 t. 2153. — Verrucaria thelostoma, "Ach. in Winch, v. 2. p. 44." 

 — Pyrenula umbonata, Ach. Syn.p. 121. 



Whin-stone rocks, near Eglestone, Durham, Rev. Mr. Harriman. — I 

 agree with the opinion expressed by Sir James E. Smith, that this 

 accords better with the Lecanora of Acharius than with the Vcrrucarice 

 or Pyremdce. 



15. L. subfusca, Ach. (broivn- shielded /Lecanora); crust thin 

 continued smoothish brownish-white, apothecia sessile slightly 

 convex dark reddish-brown sometimes inclining to black with a 

 tumid entire border. Ach. Syn.p. 157. — Lichen subfuscus, Linn. 

 —E. Bot. t. 2109 Dill, Slusc t. 18. /. 16. 



On the smooth bark of trees, most abundant; sometimes on rocks; 

 and very variable in the size and hue of the apothecia. These are 

 clustered, and, as it were, compound; sometimes the crust is greenish. 

 L. angulosa, Ach. appears to be only a var. of this, found in the North 

 of England and Scotland. 



16. L. frustulosa, Ach. (white-scaled L.cranora); crust tarta- 

 reous yellowish-white in dispersed tumid warts at length some- 

 what imbricated lobed and variously shaped, Apothecia dark- 

 brown at length convex with a cremate holder. — Ach. Sun. 

 p. 155). — Liahen fhutolojus, Dichs. Cr. Ease. 9. //. 13. /. 8./. 1»». 

 E. B„t. t. 2273. 



Rocks of micaceous schist, on the Breadalbane mountains. 



** Ajiotltcrio rid or >/r!/oit\ and sometimes inclining to brown. 

 in rrr ULieh. 



17. L. rintnsii. A.h. (red-spangled Lin mom); crust thick 



cracked the areohe tumid ejeenUh-Milphur -coloured sometimes 



whitish, apothecia oppressed convex irregular Wood-red rising 

 above the Barrow border. Ach, Syn* />. 159 — Lichen vent 



E. Hot. t. \m\.— /),il. Muse. t. is.'/ I I. 



Mountain-rocks, abundant. 



Is. L. n/ siu-riifii. (grey and red Lecanora)} crust limited 

 granulated pale-grey, apothecia tawny-red flaUish with a thick 



waved bonier. S/n. — Lit Inn e,i sm-rufiis. S,hrnd. — /;'. Bot\ 

 /. 1(1 }l l. — L,innorn r/dn/ms,. Ae/i. .Si,/i. />. 162. 



On walls, Norfolk snd Cambridgeshire. 



