516 
notice you have been pleased to take of my North- 
umberland and Durham Catalogue and pamphlet in 
your excellent English Flora, which has afforded 
me infinite information, especially on the difficult 
subject of the synonymy of the older authors,—a 
topic far beyond the reach of ordinary compilers. 
Had I been aware that no localities of rare species 
would have been admitted into your work without 
you possessed specimens, I would have sent you the 
last I have of Pyrola secunda, from the only well 
authenticated English habitat at present known:— 
I mean Ashness Gill, above Barrow Force, near the 
Derwent-water Lake in Cumberland, where it was 
gathered in 1807 by your friends Turner, Hooker, 
and myself. As for Pyrola rotundifolia, it is abun- 
dant in the romantic Dene at Castle Eden in Dur- 
ham. In vol. ii. p. 369, Gibside Woods, in the same 
county, is mentioned as a locality of Spiraea salici- 
Jolia, but it is merely naturalized there, in the same 
way as in the Duke of Athol’s woods at Dunkeld, 
and by Roadley Lake on the wild moors of North- 
umberland beyond Cambo (the birth-place of Ca- 
pability Brown); but there, very old and stunted 
lilac-trees pointed out the exotics. While on the 
subject of naturalized plants, it may not be amiss 
to mention that I once met with a considerable 
quantity of Sazfraga umbrosa in the woods of 
Blair Athol, associated with Pyrola secunda, Arbu- 
tus Uva-Ursi and Habenaria bifola, and close to 
Pellidea venosa. Here I thought the London-Pride 
might be considered truly wild, especially as the 
general habit of the plant was much altered; but, 
