LONDON BOTANICAL EXCHANGE CLUB. 69 
acuminate, more or less cordate at the base, sharply serrate ; the pu- 
bescence of the stem and leaves is much harsher than in S. ambigna. 
Statice Limonium, L., var. serotina. Specimens thus named are sent 
by Mr. Syme from Nortlifleet, Kent. They differ from the ordinary 
plant in the broadly oval outline of the leaves, and in having a more 
branched stem, the lower ramifications of which are often sterile. This 
form will be probably found not uncommon. 
Chenopodium urbicum, L., and C. intermedium, M. and K. Mr. 
Watson writes on these plants, of which he sends examples from near 
Chobhnm, Surrey, " Some Continental men refer to the figure in Eng. 
Bot. for C. intermedium, going on the toothing of the leaves — a most 
variable character in the Ckenopodia. In these examples, the leaves are 
more triangular, the teeth smaller and not pointing so forward as repre- 
sented in Eng. Bot. 717. There is a form in Surrey quite like the 
figure in Eng. Bot., which I have hitherto labelled C. intermedium. 
They are slight varieties only, and cannot be separated in any other 
way from Continental C. urbicum." 
Chenopodium glaticnm, L. Mr. Watson sends this from his garden 
(the seeds were from Guernsey, an unrecorded station for the plant). 
He writes, " probably few English botanists possess true examples. " 
Mr. Lawson sends plants quite the same tVoin the ballast-hills at 
Hartlepool, Durham. 
Mercurialis ambigna, L. This monoecious state of M. annua is by no 
means uncommon about London and other large towns. Mr. Syme 
sends it from Stone, Kent, and Mr. Briggs from a garden (in which it 
had been cultivated) at Plymouth. 
Salix ambigna, Ehrh. In the summer of the present year Mr. 
Baker noted on the slope of Dilston Fell, Tynedale, Northumberland, 
growing in small quantities amongst abundance of S. nnrita and S. 
repens, a few bushes quite intermediate in the character of their leafy 
shoots. The three forms may be characterized as follows :■ — S. aurita. 
Stems chesnut, nearly naked; leaves 1£ inches long, J- inch broad, obo- 
vate-oblong, herbaceous in texture, rugose and plicate, so that the 
point is quite twisted, the upper surface full-green and scarcely at all 
sdky, the lower with all the veinlets raised, the intervals glaucous- 
green, with very fine short pubescence. 
Intermediate. Stems grey and silky ; leaves scarcely over 1 inch 
lon S> | inch broad, oblong, herbaceous in texture, slightly rugose, the 
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