164 
ASPIDTACE^. 
Caernarvonshire. Mr. Pinder, who found it on Snowdon' 
and on Glyder Vawr, in both places in fruit, observes that the 
plants were more lax in their habit than those from Scotland, 
yet he found on cultivation that their character remained un- 
changed. Bolton records both these localities, and Hudson says 
it is plentiful on the mountains above Llanberis. Clogwyn-y- 
Gamedd, near the summit of Snowdon, and Cwm Idwell, have 
often been recorded as stations ; and I was successful in finding, 
in several localities near the last of these stations, the plant to 
which botanists allude : it grows just at the upper entrance of 
that vast fissure called Twll-du ; again, proceeding thence to the 
right of the fissure, one or two plants occur on the face of the 
rock near the spot where Anthericum serotinum is found, a dan- 
gerous locality by the way, requiring a firm foot and a cool head ; 
and again, below the fissure, on the rocks to the right. 
Durham. — Mr. J. Backhouse observes that it is very fine on 
Falcon Clints, just where the basalt joins the mountain lime- 
stone, ten miles west of Middleton, in Teesdale. 
Yorkshire. — Mr. Tatham, who has obligingly sent me a spe- 
cimen, observes that it occurs sparingly on the rocks above Settle. 
To Mr. S. Thompson, of York, I am indebted for a second spe- 
cimen from Attermire Scar ; these specimens, being small and 
very sparingly fruited, do not possess diagnostics whereby I can 
separate them from the seedling forms of P. aculeatum, Mr. 
Watson has published an opinion to the same effect. 
In Scotland this fern is much more abundant, and more harsh, 
prickly, rigid and erect in its character. As I have every reason 
to believe it exists in many other localities, I give the following 
list under a feeling of its great imperfection. 
Aberdeenshire. — Dr. Murray. — Francis^ Analysis. 
Dumbartonshire. — Mr. Gourlie informs me that he found it 
on Ben Voirlich, in July, 1842. 
Forfarshire. — I am indebted to Dr. Greville and Dr. Balfour 
for beautiful specimens from the Clova mountains : Mr. Watson 
informs me he has found it on these mountains ; and Mr. Gar- 
diner, in a list of Forfarshire ferns with which he has favored 
me, observes that it is plentiful among the rocks of the moun- 
tains, and particularly fine on those of Craig Maid in Glen Dole. 
