* 
34 ON THE GREAT WATER-DOCK OF ENGLAND. 
must be remembered that I am only re-introducing an old acquaint. 
ance. So long back as 1843, in the first edition of his ‘‘ Manual,” 
Prof. Babington stated that a ‘plant in the possession of Mr. Borrer, 
s in Sussex, will probably prove to be & 
0 
established. ‘Tei is rather remarkable that the plant should for so 
long have dropped out of notice; the specimens are still in Borrer’s 
be 
papers on Sussex botany has taken no note of them, and indeed the 
sop fe pao in British em, about Sc plant is the formula, ‘ Error 
” with which tson disposes of 2. maximus in 
jue ‘s tba omnis (p. ‘556 6). 
{ summer Mr. Warren, having had his attention previously 
directed to the matter, carefully d of Lewes— 
a grand locality apparently for Docks—and had the satisfaction of 
finding the plant of which a specimen is here figured. This agrees 
with the characters of 2. maximus, and with Continental specimens 80 
ee. ae is the wae we have ps ger) etermined—as the 
specimens in Borrer’s her m (some of which were gathered by 
Joseph Woods) tie in pnt places near Lewes in 1843-49, 
The characters by which 2. maximus differs from R. Hydrola- 
pathum are, I Ration confined to the perianth, the fruit, sad the 
rot leas The following description of these points is taken entirely — 
. Warren’s Lewes plant:—Fully ripe inner perianth-leaves 
aes a tenew a arae with a rounded or slightly cordate base, 
blunt at the apex, variable in size, the orate as broad as long, about 
ticulations 
prominences formed by the vue running ne beyond the margin, all 
tubercled, tubercles 3-3 as long as Pcp g bevath lanes, Nut broader in 
proportion to length than in R. M ydrolapathum, about 3 inch long by 
5 wide. Root-leaves broader and ‘to tha 3 R. Hydrolapathum 
(in the specimens 13-16 inches long by 4-6 wide), ovate, abruptly 
rounded, or even slightly pet wh at the base, with the two sides unsym- 
metrical, n never attenuated into the leaf-stalk.—These points are shown 
in the figure, ee details of R. Hydrolapathum have been added for 
to scale, 
specimens can be readily found which appear to occupy quite an inter- 
be om ngs or even a series which will b ridge the extremes. 
ever, R. maximus occupies the rank of a species in the works 
of such botanists as Fries, Koch, and indeed nearly all Continen 
a 
