in the neighbourhood of Oswestry and Ludlow. 97 



Parmelia aquila. Upon the north side of a small mass of sandstone 

 rock on the southern slope of Mynydd-y-Myfyr. This may almost be 

 called a maritime plant, being so commonly and abundantly found 

 on maritime rocks, and scarcely met with elsewhere. The late Sir 

 J. E. Smith told me however that he had met with this plant at 

 Stonehenge, which is about thirty miles from the sea, in a direct 

 line ; we are about forty- five. In the great storm however of January 

 6th, a few years ago, our windows even at this distance from the 

 sea were copiously incrusted with sea-salt, so that the seeds of a 

 maritime lichen would be readily carried to us. The plants in 

 question do not spread upon the adjoining stones, and which is 

 perhaps singular, they occupy the face of the rock from the sea ; 

 upon the coast, as far as I have observed, they always face the sea. 



P. aleurites. Not uncommon upon old pales : Hay Park near 

 Ludlow, and Oteley Park near EUesmere. 



P. amhigua. In similar situations to the last, but very scarce in 

 fruit ; upon an old gate at Pentregaer. 



P. physodes. Very finely in fruit upon the pales of the Hay Park 

 and about the Moor Park near Ludlow. 



P. plumbea. Upon ash-trees at Craig-y-Rhu, but barren. 



P. crassa. Limestone rocks, Oswestry. 



P. hypnorum {Lecanora). Hay Coppice, Herefordshire : scarce. 



P. erosa. Upon the elm-trees in the walks at Ludlow Castle on 

 the west side. 



P. casia. Not uncommon, but usually barren. I have found it 

 in fruit on the Moelydd. 



Sticta scrobiculata. Hay Coppice, about the roots of old oaks in 

 fruit. 



S. limhata. Hay Coppice, on hazels. 



S. pulmonaria. Ditto, and at Oswestry : not uncommon. 



S. sylvatica. A single plant only of this has grown for many years 

 upon a mass of rock in the Hay Coppice. 



Collema fragrans . On trees at Llanforda and Pentregaer, but not 

 common. It clothed nearly the whole inside of an old pollard- ash 

 (now cut down), one half of which had been torn away, and the 

 other half exposed to the weather. I could never detect any pecu- 

 liar scent about it to entitle it to its specific name. 



C. ceranoides. Upon a wall near the garden at Llanforda. 



C. multipartitum. This is a beautiful plant, radiating from a 

 centre upon flat masses of the limestone rock, the rounded appear- 

 ance of the narrow segments of the thallus giving it an appearance 

 as if made of minute cord ; the centre soon decays, so that what is 

 usually found of the plant are simply detached broad arcs of a circle. 

 It grows both on the Moelydd and at Pentregaer. 



C. marginale. Pentregaer. 



C. tunaforme. Ditto : scarce. Mr. Borrer considers this to be 

 the same as dermatinum. 

 C. granulatum. ~\ 

 C. dermatinum. > Pentregaer. 

 C. sinuatum. J 



