Lecidea.") LICHENES. 181 



numerous convex rugged brown semitransparent at length 

 blackish. Ach. Syn. p. 36. — Lichen viridescens, Schrad. — 



E. Bot. t. 2217 Liclien hypnophila, Turn, in Ach. Lich. Univ. 



p. 199 ; (which Acharius has now strangely rtferred to L. fusco- 

 lutea in the Synopsis. Borr.) 



On mosses and old walls and ruins in Norfolk. — Mr. Turner and Mr. 

 Borrer have both expressed an opinion that this is probably not really 

 distinct from L. vcmalis ; but Sir J. E. Smith observes that the apothecia 

 have no elevated border, nor are they, when full-grown, of so light a 

 colour. 



40. L. pulcerea, Borr. {pale-green mealy blach-shielded Le- 

 cidea); crust indeterminate soft mealy pale greyish-green, 

 apothecia sessile largish black internally pale, the border livid 

 slightly raised evanescent. Borr. in E. Bot. Snppl. t. 27'26. 



On Oak-bark in the New Forest, Hants, C. Lyell, Esq. Soutli of 

 Ireland, spreading over mosses, Miss Hutchins. — " It has been suspected 

 that this Lichen might be a var. of L. incana ,• but Mr. Lyell sent it as 

 distinct, and Miss Hutchins maintained the same opinion, observing 

 that she found the apothecia of all ages constantly black. It may be 

 added that their substance is not so thick, and their border, especially 

 when young, is narrower and less rounded." Borr. 



** Apothecia brown, reddish-yellow or flesh-coloured, never 

 (or rarely) black. 



41. L. incana, (soft mealy-crusted Lecidea); crust leprous 

 very mealy soft uneven greenish-grey, apothecia scattered ses- 

 sile brown with a paler brown even smooth border. Sm. — 

 Ach. Syn. p. 36. — Lichen incanus, E. Bot. t. 1683. — Lepraria 

 mtana, Ach. Lich. Univ. p. 665. — Byssus incana, Linn, f — 

 Dill. Muse, t.l.f. 3. 



On trees, shady rocks, and hanks, frequent ; \cv\ rare in fruit; first 

 discovered in that state by C. Lyell, Esq. in the N. Forest, Hants. Sus- 

 sex, Mr. Turner and Mr. Borrer, 



4$. L. sulphured, Ach. (sulphureous Lecidea)} crust thick 

 cracked rugged dull sulphur-coloured, apothecia convex brow n 



mealy with a paler margin. — Ark. Syn. p. .'37. — Lichen sulphu.- 



rcus, 11. /'"/. t. 1180 Verrucaria sulph. ffqffm. 



Kock^, stones and brick jvallsj in open situations 



43. L. expdltens, Hon*. M^>. (pale yellow-green Lecidea); 



crust thin powdery Spreading pale greenish sulphur-coloured, 



apothecia sessile pale butr' with a powdery edge at Length con- 

 vex ragged without a border, Sm, — Lecanora expalletu, Ach. 

 Syn, p. 17 1. —Lichen orosthens, E. Bat, t 1549, (not Ach, f) 



Trees and rocks j on the hitter in Bftaded situations. — Mr. Borrer 

 mjft thai the /-• orotthea of Ach. seems t<> connect this /.. eulphurth, 



ii. L. <BTugin6$tt, Hon-, (dark-preen powdery Lecided)t crust 

 indeterminate grannlose greenish-grey, at length covered with 

 sruginose powder, apothecia superficial small dull-Mack brown- 

 ish or reddish the disk flat the border elevated somewhat 



»1exuo>e. litnr. m /;'. lit. Siippl.t. 06€ 



