KXHIBITIUX MKKTlNi;. 1950 •> 
It is proposed to investigate these plants more fnllj^ and to 
make cytological investigations. Tlie exhibitor has them under 
cultivation in flower pots of chalk soil at present. The anatomy 
is being examined, but so far no obvious differences have been 
noted here. 
There is an isolated area of distribution of F. calcaren 
on the Oolitic Limestone of Rutland, East Leicester, 
v.-c. 55, and S.W. Lines., v.-c. 5.3, where the form of the species 
is rather like the East Kent (jlant in the size of root- and stem- 
leaves, but the stems are taller, slenderer and laxer flowered. 
The Rutland plant has deep blue flowers, but the Lines, plant 
is paler, aifcd has flat root-leaves of thin texture. 
It will be interesting to see wRat forms of P. culcarea occur 
in northern France. 
SILENE NUTANS AGO. IN KEiNT. 
Material of the three forms of this aggregate in Kent was ex- 
hibited as follows : — 
1. Silene nutains L. sec. Moss (jS'. duhia Salmon non Herbich ; 
S. italica sec. Hanbury & Marshall in FI. Kent, 1899, non 
Pers. ; S. patens Peete in Eng. Pot. Suppl.-, S. paradoxa 
Sm.), from Dungeness shingle beach. (Reported also at 
Dover by Peete). 
2. E. nutans auct. non L. (S. nutans L. var. Smithianu Moss 
in Camb. Brit. Flora), from cliffs on Chalk at St Margaret’s 
Bay, J)over and Folkestone. (Reported also from Shorn- 
clift'e. Sandgate, by G. Walton, 1925, in E.E. Natwrallst 
Sap pi.). 
3. S. italica. Pers. from Greenhithe, W. Kent. 
Distribution maps were shown of the first two in Kent. 
F. Rose. 
MONTIA FONTANA L. 
N.W. European material of Muntia can be sej)arated, on the 
basis of characters of the rijie seed, into four groujis all of 
which are repre.sented in Britain. One of these, M. verna 
Necker, shows no sign of intermediates to the others, and dif- 
fers also from them in habitat and correlated habit, being typi- 
cally a small annual of wet sandj^ ground subject to seasonal 
drjung. (In the E. Mediterranean, however, plants with seed 
charactei-s somewhat intermediate between M. verna and an- 
other form do seem to occur). The other three plants do not 
seem to show clear boundaries in the seed characters, but each 
has a characteristic geographical distribution. These are: 
the Northern plant, which has been called M. lamprosperma 
Chamisso; a W. European plant, M. lusitanica Sampaio, which 
