Lecanora.] LICHENES. 139 



f f Thallus seal?/, or crustaceans and lobed. 



19. L. squamulosa, HOOK. Thallus of imbricated, tumid, 

 uneven, subglobate, brownish-olive-grey scales, crowded in an 

 areolate manner, subdeterminate ; apothecia numerous, large, 

 rather crowded, sunk, at length elevated ; their disk flattish, 

 dusky black ; their border elevated, entire, wavy. Hook. Eng. 

 PL v. 5, p. 187. Lecanora badia a. Ach. Lich. Un. p. 407. 

 Eng. Bot.t. 2011. 



On basalt, near Belfast, Mr. Templeton. The colour of the dry 

 thallus is of a dusky brown, of the wet of a brownish-olive and much 

 lighter. Under the lens the dissected disk appears rather opaque and 

 deep brown, the lamina protigera of a reddish and white brown, semi- 

 pellucid, and striated. 



20. L. muscorum. Thallus foliaceous, very minute, irregu- 

 larly stellate, lobed, glaucous grey ; buds marginal and central, 

 in a glaucous-grey powder ; apothecia few, immersed among the 

 buds, minute ; the disk flat, of a dusky red ; the border paler, 

 entire. Lichen muscorum, Jacquin Coll. torn. IV. pag. 232, t. 

 7, f. 1. Squamaria muscorum, Hook. Eng. Fl. v. 5, p. 194. 

 Lecanora hypnorum, Ach. L. Un. p. 417. Lichen carnosus, 

 Eng. Bot.t. 1684. 



On moss or stones in Askew wood, County of Kerry, with apothecia ; 

 the infertile state on trees in woods near Killarney, common. The 

 buds appear first on the margin, afterwards on the surface of the lacinics 

 of the thallus. The wet surface is less white, somewhat greener. The 

 apothecia are sometimes clustered, their disk at length dusky. The 

 patches among moss on the barks of trees often extend to several 

 inches. 



21. L. hypnorum, ACH. Thallus of imbricated, crowded, 

 greenish ash-coloured or brownish scales, minute, rounded, cre- 

 nulated, and granulated with buds at the edges ; apothecia 

 large, flat, at length convex ; the disk reddish brown ; the 

 border inflexed, crenate. Ach. Syn. p. 193. Lecanora lepi- 

 dora, . Ach. L. Un. p. 418. Lichen hypnorum^ Eng. Bot. t. 

 740. 



On mossy banks, near Belfast, Mr. Templeton ; woods of Killarney, 

 common. The apothecia are conspicuous from their size and crenate 

 border, and rival those of the larger Parmelice, 



22. L. candelaria, ACH. Thallus foliaceous, imbricated, the 

 lobes crowded, laciniated and jagged, yellow ; their margins 

 bearing yellow powdery buds ; apothecia flattish ; the disk of a 

 dusky yellow ; the border brighter yellow, inflexed, waved. 

 Ach. L. Un.p.4\Q. Lichen candelarius, Linn. Eng. Bot. t. 

 1794. L. poly carpus, Eng. Bot. t. 1795. 



On trees, and on rocks ; not uncommon. This appears to vary most 

 singularly in the size and breadth of the thallus from the minute state 

 on trees, whose division is scarcely perceptible to the naked eye, to 



