Rev. T. Salwey's List of Lichens in Wales. 29 



this plant, I am inclined to think with Acharius that it is distinct 

 from affinis, though not allowed to be so by British authors. 

 Parmelia speciosa. On stones at Llyn Bodlyn : lirst discovered in the 

 neighbourhood of Barmouth by my friend Mr. Ralfs, who found 

 one or two spechaens on the rocks above the town. 



incurvu. Not very common ; lane between Glan Mowddach 

 and Bodowen, IVIoelfre, &c, ' 



Fahlunensis . Rocks above Llyn Cae on Cader Idris, pointed 



out to me by Mr. Ralfs. 



aquila. Common on the rocks near the sea. 



plumbea. Common on trees and rocks. A singular variety 



of this plant (the y plumbea of Taylor) grows upon the North 

 Rocks at Tenby, where it hangs in large loose thin masses, slightly 

 attached only here and there at the edges. 



aleurites. A variety of this plant, having the same relation 



to its normal state that the var. y plumbea has to the normal state 

 of that species, is found upon an isolated mass of rock in the 

 meadow above Dolwraiggiog leading up to Cwm Bychan. 



ambigua. In fruit in the woods at Crafnant, also in that 



state upon pales in the park at Powis Castle in Montgomerj'shire. 

 sinuosa. Upon stones in the higher hills about Barmouth, 



but not in fruit ; on birch-trees at Rhaidr-Du. 



physodes. In fruit in Cwm Bychan. 



diatrypa. Common, but barren. A single specimen in fruit 



was found by Mr. Ralfs in 1839 upon the rocks above the Tan- 

 nery. 



isidio'ides. Upon trees at Crafnant, 1835 ; on a single tree 



near Tyn-y-Groes, Mr. Ralfs. 



cartilaghiea, Swartz. On a single mass of rock in Llyn 



Bodlyn. 



Sticta pulmonaria. Common. I have found this plant with all the 

 shields quite black, both old and young. It is not uncommon in 

 this and other species for the shields to turn black with age, but 

 in the case alluded to the young shields were perfectly black as 

 well as the old ones. 



scrobiculata. Common, but not usually in fruit. 



limbata. Common, but always barren. 



fuliginosa. Common. It is occasionally met with in fruit, as 



by myself upon walls and rocks in damp situations in the woods 

 at Garth, and in similar situations at Capel-curig and Bettws-y- 

 Coed, and by Mr. Ralfs in the lane leading up from the Towyn 

 turnpike-road to the top of Cader Idris. 



. sylvatica. Common, but always barren. There is a Sticta (al- 

 lied to sylvatica }) in a wood between Arddog and Ynysfaig co- 

 vered with blue mealy soridiae. It is perhaps a distinct species 

 intermediate between sylvatica and scrobiculata. 



Collema nigrum. Not common, being principally confined to lime- 

 stone rocks. 



cristatum. On the wall opposite the stables at the Cors-y- 



gedol Arms. 



