140 LICHENES. [Lecanora. 



the expanded state figured at t. 1795 of Eng. Bot. which is common 

 on our limestone rocks near the sea. In the last case minute swellings 

 of the fronds, which burst and display an orange colour at their tops 

 occur, which perhaps are never present in the minuter state, nor in 

 Parmelia parietina, to which otherwise it is strongly allied. 



23. L. murorum, Ach. Thallus tartareous, orbicular, pli- 

 cato-rugose, lobed in a radiating manner, cracked, adnate, the 

 segments linear, bright yellow ; apothecia central, crowded ; the 

 disk at length convex, of a reddish-tawney ; the border paler, 

 entire, waved. Ach. L. Un. p. 433. Eng. Bot. t. 2157. 



On walls and on rocks; common. 



24. L. miniata, Ach. Thallus in dispersed patches, tar- 

 tareous, shortly lobed and subcrenate, reddish-orange, lobes 

 adnate, thin, tumid, with a paler, somewhat fibrous edge ; apo- 

 thecia minute ; their disk of a dusky reddish-orange, at length 

 convex ; their border paler, entire. Ach. L. Un. p. 434. 

 Hoffm. PI. L. t. 60, /. 1. 



On siliceous rocks, Blackwater Hill, County of Kerry. Another 

 state, scarcely variety, occurs on mortar and on limestone at Dunkerron, 

 with the thallus in pieces, somewhat more orbicular, of a yellower tinge 

 and the apothecia for the most part concave or flat, yet occasionally 

 quite convex. But how it is to be distinguished from Lecanora elegans, 

 Ach. I cannot conceive, though I have not ventured to quce this 

 under our species. Again, growing intermixed with the last alluded to, 

 appears a state in which the thallus is orbicular, adnate, pruinose, lemon- 

 coloured, lobed in a radiating manner, the apothecia orange coloured, at 

 length convex, the border at length obliterated ; which thus corresponds 

 to the descriptions of Lecanora fulgens, Ach. 



25. L. gelida, Ach. Thallus tartareous, determinate, 

 cracked, whitish-grey, lobed in a radiating manner, the edges 

 dusky ; buds in a greenish-olive powder in roundish excava- 

 tions of the thallus ; young thalll in central elevated flattish 

 warts, cracked from their centre; apothecia concave; the disk 

 of a pale red ; the border at length crenate and waved. Ach. 

 L. Un. p. 428. Eng. Bot. t. 699. 



On siliceous rocks, Dunkerron mountain, with apothecia. In our 

 specimens the conversion of the apothecia into central warts is ob- 

 servable. It is by no means an alpine or with us a northern species. 

 Disk pruinose, at length dusky : lamina proligera, containing numerous, 

 coloured, erect, variously shaped processes. 



26. L. saxicola, Ach. Thallus between tartareous and foli- 

 aceous, lobed in a radiating manner, the lobes scaly, imbricated, 

 of a pale greenish-brown ; the edges elevated, whitish, pow- 

 dery ; apothecia crowded ; the disk flattish, of a tawney-brown ; 

 the border paler, at length waved and crenate. Ach. L. Un.p. 

 43 . Eng. o . t. 169' 



On siliceous rocks, near Belfast, Mr. Templeton ; in Kerry, com- 

 mon. 



