878 NOTES ON PONDWEEDS, 
dulous, their tips pointing to the oun: bh leaves are Ase oie 
in proportion to their length than in S. ramosum rather 
suddenly narrowed, in the last inch or en oe a sub- a ie pie I 
have since found these distinctions to be generally observable in 
t 
early in their growth, as later in the year the leaves become 
trodden down, or cane injured or disarranged, so that the 
habit is obscured. Where, however, the plants grow in isolated 
positions, as in different sia in some parts of the River Wey, the 
habit of each is quite marked late in to the summer. 
have essa in growing a few plants of S. neglectum from 
he fruits which germinated were collected last April in a 
aitob near Ghettiey. and began to grow early in June, so that 
probably the fruits always hie in the water some seven to eight 
isco before germinating. Bf stony epicarp apparently 
remains whole, and the young plant ae through the base of 
the nag which splits up into several Bash The young plants are 
now about two inches high, and of a Sang semi-transparent green 
colour 
The padiiaa Be are the only additional county records that have 
come before 
Laraenien ranosum Ourtis——Bueks, G. C. Druce ; ares 
G. C. Druce; Gloster East, W. Moyle Rogers; Radnor, A. G. 
pein "eee A. J. Crosfield) ; Leicester, F. T. Mott; Fife, J. T. 
Bosw 
5. glee eerie —Essex North, J. D. Gray; Suffolk Hast, 
E. F. Linton; Suffolk West, W. M. Hind (com. Ar. Bennett) ; 
Hunts, W. R. Linton 
Thus there has been no northward extension of the range of 
the latter plant, and in the Eastern Counties it occurs mostly in 
isolated localities. North Essex, however, seems an exception, as 
the Rev. J. D. Gray reports it common in ditches about Nayland. 
servations recorded above may be of use as bearing on 
well —_ characters ; good fruit will always be required to ensure 
i determination, and this is the case with most of the 
NOTES ON PONDWEEDS. 
By Aurrep Fryer. 
5 2. Poramoceron Lucens L.——In co ple with this old Linnean 
‘species a difficulty presents itself which must be discussed before 
ths enareeed description can be Gael. phe question which 
ses is this: What has to be described? The old aggregate 
of Linneus ; and pe sernent authors, which includes the 
