REPORT FOR I 879. 
!9 
It is the only form of P rurivagum that I have seen here, where the 
upright plant, with rather large bright red perianths, which is so 
common in sandy ground about London, does not occur.” 
Polygonum Persicaria , L., var. P. laxum , Reich. Sent by Mr. J. 
G. Baker from Kew, Surrey, August, 1878. Prof. Babington thinks 
this to be P. biforme , Wahl. Dr. Boswell’s opinion is that it is 
certainly P. Persicaria, var. elatum , G. and G., E. B., ed. iii. 
Polygonum maculatum, Trimen and Dyer, var. laxum. Sent by Mr. 
J. G. Baker from Kew, Surrey, August, 1878 ; also var. densum , from 
the same locality. Prof. Babington remarks : “ Is not this also P. 
biformel Also the supposed densum .” Dr. Boswell says it is maculatum 
without doubt — i.e., P. nodosum and P. laxum, Reichenb. 
Euphorbia Cyparissias, Linn. Sent by Dr. Eyre de Crespigny 
from a chalky slope near Dover, Kent, June, 1879. Prof. Babington 
thinks it is E. Esula. 
Ceratophyllum demersu?n, L. From Westminster Mill Pond, 
Newport, Isle of Wight, November, 1879. Sent by Mr. Fred. 
Stratton. 
Ceratophyllum submersum, L. Mr. H. Groves sends this species 
from a salt marsh ditch, near Shorne, West Kent, 3rd August, 1878. 
Ulmus montana, Sm. c. nitida. Sent by Rev. Augustin Ley 
from planted trees, Poulstone, Herefordshire, 30th October, 1876, 
and 19th March, 1877. 
Salix ferruginea, Anders., b. rugosa. Sent by Mr. H. Brom- 
wich from Kenilworth, Warwickshire, September, 1878. The name 
rugosa confirmed by Mr. Baker and Dr. Boswell. 
Salix Lapponum, var. pseudo-glauca ? A single specimen of a 
male plant sent by Mrs. Elizabeth A. Lomax from between Lochs 
Callater and Muick, 1st August, 1879. 
Arum italicum Mill. Sent by Mr. James Cunnack from Chyan- 
hale, near Helston, July, 1877. Dr. Boswell pronounces this the 
true plant, with white-veined leaves. 
Potamogeton polygonifolius, Pourr. A single plant from a moun- 
tain stream, Moel y pare, near Caerwys, Flintshire, 4th September, 
1879. Sent by Mr. J. Harbord Lewis, as apparently new to the 
county. Mr. Charles Bailey sends a narrow-leaved form of what 
he takes to be the variety b. pseudo-fluitans, E.B., from the outlet of 
Cwm Bwchan lake, near Harlech, 18th September, 1879; Professor 
Babington thinks this name quite probable, but not certain. 
Pota?nogeto 7 i heterophyllus , Schreb. Mr. A. Bennett sends a 
single plant from the canal between Woking and Wey bridge, Surrey, 
with stolons from the axils of the upper leaves. (See Dr. Boswell’s 
remarks upon this character, in P. nitens, E.B., 3rd ed., vol. 9, p. 37.) 
Potamogeton Zizii , Mer. and Koch. Mr. Andrew Brotherston 
sends a further supply from Cauldshiels Loch, Melrose, Roxburgh, 
9th August, 1879, t0 show the difference in general appearance which 
the same species exhibits from the influence of two different kinds of 
seasons, Mr Brotherston mentions that the specimens sent to the 
Club last year (see Report for 1878, p. 19) “were smaller, more com- 
pact and firmer in texture, not drawn out like those of 1879. Mr. 
Baker remarks, in last Report, ‘ That P. Zizii appears to be a large 
deep-water form of P. heterophyllus ,’ &c. So far as I have seen, Zizii 
