Rey. T. Salwey on the Cryptogamic Flora of Guernsey. 23 
meagre specimens of Sticta pulmonaria are also without apo- 
thecia. The abundance of their orchards led me to expect that 
I should discover here the Parmelia chrysophthalma which is 
found in the south of England; but my researches failed in dis- 
covering more than a single specimen of this plant in an orchard 
in Sark. My friend Mr. Lukis some years ago once found also 
a single specimen of the same plant in the northern part of 
Guernsey. _ This island however possesses much to interest the 
lichenist from more northern regions. He will find here abun- 
dance of the Roccella tinctoria, and will also meet with Lecanora 
milvina, Lecidea Salveti, Parmelia leucomelas, Sticta aurata, and 
Porina pustulata of Ach.,—a plant hitherto a stranger to our 
British flora. 
In the minute epiphyllous fungi the island is more prolific 
than I have found any locality of the same extent in England— 
some few species are in extreme abundance and very fine, as the 
Puccinia Cotyledonis and Avcidium Bunii—the Dothidea rubra 
also is much more highly developed than I ever found it in En- 
gland, thus showing the influence of a southern climate on this 
class of plants. There was one circumstance however with re- 
spect to this tribe of plants which much struck me. In Shrop- 
shire and Herefordshire, as well as in Wales, it is perhaps not 
possible to find a syeamore-tree of which the leaves are not 
blackened with numerous specimens of the Rhytisma acerinum ; 
whilst in Guernsey I could not even detect a single specimen, 
although I examined every tree I met with after my attention 
was attracted by this circumstance. The leaves of every sycamore- 
tree in the island are as perfectly free from this discolouring epi- 
phyte as those of the plane-tree. One or two of the Uredines 
which I have sent to Mr. Berkeley he thinks may prove to be 
new species. Amongst this tribe of plants he has already named 
as new the Depazea Carice on the leaves of the common fig-tree, 
and the Ustilago Salveit on young plants of Dactylon glomeratus. 
The richest part of the cryptogamic flora of Guernsey will 
doubtless be found in the marine Algze. Were any one well ac- 
quainted with this department of botany to be long resident here, 
I feel little doubt that some interesting discoveries might be 
‘made. The few opportunities I have had of studying them from 
short and occasional visits to the sea-coast, and this in only one 
or two localities, have given me little opportunity of becoming 
much acquainted with this branch of botany; whilst during 
the time of my residence in this island, the state of my health 
confined me so much to the house, that my botanical researches 
in every branch were greatly interrupted. The list therefore 
which I have sent you is only to be considered as “ contribu- 
tions ” towards the cryptogamic flora of Guernsey, of which it is 
