133 
THE VEGETATION OF ROTTEN PARK RESERVOIR. 
By H. Sruarr Tuompsoy, F.L.S. 
its banks during these years, it may be of interest to put them on 
record. 
On Sept. 21st, 1893, after the long drought of that summer, I 
found the vegetation on the bed of the reservoir largely composed of 
Chenopodium rubrum, a new record for the Tame division of the county 
of Warwick, and its prostrate f ied to th lety pseud 
ats., Nasturtium palustre, Gnaphalium uliginosum, Polygonum 
} latum G. & the rarer P. 
esas 
allie botryode. 
vuts 
geniculatus and A. fulvus, Sagittaria sagittifolia, Juncus lamprocarpus 
and J. bufonius, Sparganium simplex, Callitriche platycarpa, Littoreila 
juncea, hitherto recorded from only four places in Warwic shire, 
and Limosella aquatica, new to the Tame basin, and very scarce in 
the county altogether. 
ollowing Saturday Mr. Bagnall accompanied me to the 
reservoir, and he added to the list a very rare hepatic, Riccia crystal- 
lina, which was quite new to the midlands. Mixed with it on the 
mud were large vivid green patches of the rare earth-moss 
Nasturtium palustre, Chenopodium rubrum, P. Persicaria and lapathi- 
foltum were as luxuriant as before; and there was also a patch of 
e me Nasturtium amphibium at the extreme corner of the 
shallow end. 
a blaze of gold, Carex ovalis and C. hirta were freque: a 
with very long woody stolons, half-buried in th drift, was not easy 
to determine, until on getting t in fruit later in the on 
n ge 
it proved to be only a large and abnormal form of C. hirta with some 
of ads compound at the base. The two common grasses, 
Glyceria fluitans and Agropyron caninum, were much in evidence ; 
while, on July 14th, the scarce Alopecurus fulvus (seen in 1893) re- 
appeared, and there were great patches of the handsome Phalaris 
arundinacea, and Glycerta aquatica with its spear-like leaves. In 
many places was Scirpus palustris, and one good patch of S. multi- 
