BOTANICAL EXCHANGE CLUB. 
17 
Nicholson lias contributed a good supply this year from Hampstead 
Heath. 
Specularia hiihrida. Stackyard at West Newton, Cheviotland, 
A. Brotherston. New to Northumberland. 
Teucriam Botnjs. A supply sent again this year by Mr. Beeby 
from the Sanders tead station. 
Mentha puhescens. Pengersick Castle, J. Cunnack ; and stream 
on Pra Sands, nearHelston, Cornwall, J. Kales. Thisis the first time 
we have had a supply of this interesting mint, which was gathered 
a generation ago in the neighbourhood of Penzance b}^ Mr. Borrer, 
but has been long sought for in vain by the resident botanists. 
Acanthus mollis. Thoroughly established on a hedge-bank at 
Treath Manaccan, Cornwall, growing with Allium Ampeloprasinn, 
W. B. Waterfall. 
Orobanche elatior. It seems quite clear now that the Epsom 
Orobanchc, which has been called lucomin, is only elatior pure and 
simple. Mr. A. Bennett sends it this year from “ fields between 
the town and downs, proceeding from the back of the grand stand 
towards the town of Epsom.” 
Solanum nuirum. A form with the fruit bright green when ripe 
(5. hiteo-virescens of Gmelin), from rubbish-heaps at Mortlake, 
Surrey, G. Nicholson. 
Veronica Buxbaumii. A variety with very hairy stems, flowers 
smaller than usual, and fruit-carpels not ribbed till the plant is 
dried, from waste ground at Kew, G. Nicholson. 
Sympjhijtum asperrimum. The introduced British plant which 
has been so called by Babington in ‘ Flora Bathoneneis,’ and Dr. 
Bosw'ell in ‘ English Botany,’ of 'which Mr. Flower sends us a good 
supply this year from the long-known station in the neighbourhood 
of Bath, and Rev. W. H. Purchas from Grange Mill, near Wirks- 
worth, Derbyshire, is evidently not the true wild S. asperrimum, 
M. B., of the Caucasus, but a garden hybrid between that species 
and S. officinale, which is often planted for forage, and which 
is most likely S. pereyrinum, Ledeb., FI. Ross., vol. hi., p. 114. 
S. asperrimum is a plant that grows five or six feet high, with 
stems densely clothed with very short, rigid, bristly pubescence, 
many of the bristles springing from white calcareous tubercles, 
leaves rough over the face with bristle-pointed white tubercles, 
like A )ichusa italica, lower leaves of the flowering branches ovate 
and contracted suddenly at the base, and a lioAver-calyx not more 
than one-eighth of an inch long, AAuth linear-ob’ong obtuse teeth 
not longer than the tube. The naturalised hybrid has much less 
bristly stems, leaA'es without AAUiite tubercles on the face, lower 
leaves of the flowering branches both absolutely narroAver and 
narrowed more gradually at the base, and a flower-calyx like that 
of officinale, AAuth acute linear teeth tAAUce as long as the tube. Mr. 
FloAver tells me that the Bath plant grows sometimes to the height 
of a man, so that it is not inferior to the irwe asperrimum in stature, 
although in its leaves and floAA^ers it seems much nearer to officinale. 
We have the true asperrimum in the IveAV herbarium from the 
neighbourhood of Stirling, gathered by G. Thomson. 
