50 " ACOTYLKDONS. LICHENS. Lccanora. 



rocks ill the King's Park, Maugh. On the largest cross among the 

 ruins at lona, Mr. Turner and Hook. 



** Thallus adnate, radiato- stellate, and somewhat lobed in the cir- 

 cumference. 



14. L. epigea, crust plaited and wrinkled white the circumfer- 

 ence smooth lobed, disk of the apothecia at length rather con- 

 vex brownish black, the margin thin entire. Ack. Syn. Lich. 

 p. 179. Lichen candicans, E. B. t. 1778. 



HAB. On the ground near Sheean Ferry, Mr. Turner and Hook. 



15. L. murorum, crust plaited and lobed cracked bright yellow- 

 orange pulverulent the circumference plicate and rayed the 

 segments linear convex cut, apothecia crowded, the disk at 

 length convex of a deeper orange, margin entire waved. Ach. 

 Syn. Lich. p. 181. Lichen muronim, E. B. .2157. L.can- 

 delarius, /3. Lightf. p.Sll. 



HAB. Walls, rocks, and stones, Light/., Hopk. 



16. L. elegans, crust somewhat imbricated plaited and rugose 

 tawny orange naked, lobes linear lanceolate waved convex some- 

 what distant radiating, disk of the apothecia concave of the 

 same colour with the crust, margin somewhat in flexed entire. 

 Ach. Syn. Lich. p. 182. Lichen elegans, E. B. /. 2181. 



HAB. Rocks, Scotland, Dickson. Rocks on Cathkin hills, and fre- 

 quent about Helensburgh, Hopk. 



17. L. circi?iata ) crust cracked greyish plaited and rayed in the 

 circumference Hnear-laciniate, apothecia much crowded at 

 length angular, disk plane brownish black even with the 

 margin of the crust. Ach. Syn. Lich. p. 184. Lichen cir- 

 cinatus, E. B. t. 1941. 



HAB. On flat stones, not unfrequent. Walls at Cathkin, Hopk. 



18. L. gelida, crust cracked pale reddish grey the circumference 

 rayed and lobed having brown warts in the centre cracked and 

 rayed, disk of the apothecia depressed reddish margin thick 

 elevated entire. Ach. Syn. Lich. p. 186. Lichen gelidus, 

 E. B. t. 699. 



HAB. Rocks, first discovered by Dr. Francis Hamilton (late Buchanan) 

 in the Glen of Lenay, near Stirling. Rocks on Ben Lomond, and 

 at the castle of Kilchurn, near Dalmally, Mr. Turner and Hook. 



*** Thallus imbricated throughout. 



1 9. L. squamulosa, crust with lobed scales of a brownish ash-colour, 

 disk of the apothecia immersed nearly plane blackish brown 

 with the margin at length prominent. Ach. Syn. Lich. p. 188 

 (L. cervina). Lichen squamulosus, E. B. t. 2011. 



HAB. Rocks and stones in Scotland, Dicksou. About Loch Carron, 

 Ben Lomond, and other parts of the Highlands, Mr. Turner and 

 Hook. 



