in the neighbourhood uf 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 Ellesmere. 
P.ambigua. 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. cesia. Not uncommon, but usually barren. 1 have found it 
in*fruit on the Moelydd. 
Sticta scrobiculata. Hay Coppice, about the roots of old oaks in 
fruit. 
S. limbata. 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 
(new 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 ares of a circle. 
It grows both on the Moelydd and at Pentregaer: 
C. marginale. Pentregaer. 
C. tuneforme. Ditto: scarce. Mr. Borrer considers this to be 
the same as dermatinum. 
C. granulatum. \ 
C. dermatinum. > Pentregaer. 
C. sinuatum. 
