Endocarpon.} 



LICHENES. 159 



lus of simple depressed cartilaginous peltate roundish smooth 

 greenish-yellow scales, apothecia immersed their points red- 

 brown depressed Ach. Syn. p. 98. Schar. Lick. Helv.p. (r2. 



n. 117. — Lichen smaragdulus, E. Bot. t. 1512. 



On sandstone rocks in Durham, Rev. Mr. Harriman. Near Sheean 

 Ferry, Ross-shire, Borr. and Hooker. Fissures of rocks, Ardtur, Argyle- 

 shire, Capt. Carmichael. 



11. E. tephroides, Ach. (ash-coloured Endocarpoii); thallus 

 crustaceous of depressed areolated and separated lobed or angled 

 glaucous ash-coloured smooth scales the circumference wavy, 

 tubercles immersed coal-black the apex depressed margined. — 

 Ach. Syn. p. 98. — Lichen tephroides, E. Bot. t. 2013. 



On the ground at Burgh Head in Stronsa, one of the Orkneys, Borrer 

 and Hook. — In habit, this species seems to be the connecting link be- 

 tween our genera Endocarpon and Vcrrucaria. M. Schaerar, in his 

 " Observationes Critical," refers it to the former. 



12. E. fuscellum, (dark-grey Endocarpon); crust smooth 

 spreading cracked dark grey somewhat pruinose, apex of the 

 apothecia flat not prominent black. — Lichen fusccllus, Turn, in 

 Linn. Trans, v. 7. p. 90. t. &./. 2. E. Bot. t. 1500.— E. teph- 

 roides, \3.polythccium ? Ach. Syn. p. 89. 



Onthewalls of Gorlestone Church, Suffolk, Mr. Turner, and in similar 

 situations in other parts of Suffolk and in Norfolk.— Acharius unites 

 this with E. tephroides, but I think not justly: the colour, form, and 

 texture are considerably different, and this has still more the habit of a 

 Verrucaria, than the last. 



13. E. smopicum, Ach. (Sinoper Endocarpon); crust spread 

 ing determinate tumid smooth cracked and tessellated scarcely 

 lobed of a rusty red, apothecia minute sunk black depressed in 

 tin- centre. Ach. Syn. p. 98. Sclurr. Lick. Helv.p, (12. n. 116. 

 — Lichen sinopietis, E. Bot. t. 1776. 



On fellow hone schist, Anglesey, Rev. II. Davis.— This again, like 

 the last, appears to have as good* a claim to rank with Verrucaria as 

 with the present Genus. Mr. Turner has suggested that Urceolaria 

 dianiarta, Acli., is probably no other than this plant : hut Acharius him- 

 Belfsays that in E. Bot. the lower magnified figure belongs to that plant, 

 while the upper one is the E.sinopicum. The name, according to Sir 

 J. E. Smith, is derived from a red stone, called Sinoper, which this 

 Lichen resembles in colour. 



—The Endocarpon paranHeum, Ach. (Lichen parasiticus, E. Bot. 

 ,. 1866,) is i on universal'} considered to he a portion of the thallus of 

 ParmeUa saxatifo or omphatodet, deformed by a parasite. 



