718 TRANSACTIONS OF SECTION K, 
can be. Fortunately some parts of it remain to show the special type of vegeta- 
tion, but these are disappearing. Peat-cutting in Ireland has an effect of much 
the same nature, and thereby bogs are turned into tussocky pasture of Juncetum 
communis type. 
Cultivation following tree-felling and drainage has produced the prevalent 
mesophytic vegetation of the Midlands and elsewhere. Tree-felling has been 
influential in converting the country entirely from natural woodland to arti- 
ficial meadows and pasture. Forestry has been much neglected in the past, and 
apart from the effect on the moisture of a district, the neglect to plant trees 
where they are cut, except where afforestation associations exist, destroys the 
natural ground flora. 
Golf links are extremely detrimental to those plants that only grow on sand- 
dunes and contiguous tracts along the coast, limited in area, and also inland 
heaths, now few in number. 
It is suggested that in every case where such causes (only a few have been 
mentioned) are at work, an endeavour should be made to obtain in the case of 
an association of plants, a reservation, and in that of a single station for a rare 
plant, some adequate means of protection. The author, as Recorder of the Plant 
Protection Section of the Selborne Society, will be glad to receive information 
and advice thereupon. 
TUESDAY, SEPTEMBER 16. 
The following Papers and Reports were read :— 
1. Notes on Stellaria graminea, 
By A. S. Horne, B.Sc., F.G.S. 
These notes related to variability in the flower of Stellaria graminea collected 
in Surrey and by the kindness of Dr. Moss in the Fen near Abbot’s Repton. 
The diameter of the corolla in flowers belonging to individual plants, in 
S. graminea, may measure 4 mm., 15 mm., or intermediate lengths; whereas it 
exceeds 20 mm. in 8S. palustris. 
The width of the petal-segments may reach ‘5 mm., 2 mm., or intermediate 
measurements in S. graminea, but exceeds 2 mm., and may reach 4 mm., in 
S. palustris. 
The stamens may be all very short (less than 4 sepals) and sterile, or all 
long (exceeding the sepals) and fertile, or of several intermediate types in 
S. graminea. 
The correlation between the above-mentioned characters was explained by 
means of a table. 
With the assistance of Mr. E. C. Titschmarsh, of the R.H.S. School of 
Horticulture, certain plants were treated experimentally (transplanted, propa- 
gated vegetatively, and seedlings raised). 
In one experiment, the flowers of a plant called B, 145 mm.-15 mm. cor. 
diam., 1 mm.-1°2 mm. cor. lobe, and stamens longest type, in several cultures, 
after nineteen days changed to 6'4 mm. cor. diam., “7 mm. cor. lobe, with stamens 
correspondingly reduced in size; whilst another form, A, 9 mm. cor. diam., 
1 mm. cor. lobe, and stamens of an intermediate type (3 sepals), remained un 
changed. The experimentally produced flowers of the B plant approximate 
closely to those of very small flowered plants in Nature, such as 4 mm. cor. 
diam., ‘7 mm. cor. lobe, with stamens 4 sepals, and male sterile plants, such as 
65 cor. diam., °8 cor. lobe (stamens less than 4 sepals). 
2. A Botanical Survey of the Maritime Plant-formations at Holme, 
Norfolk. By P. H. Auumn, B.A. 
Last June, at the suggestion of Mr. C. E. Moss, a small party was 
organised at the Cambridge University Botany School to commence a detailed 
botanical survey of the maritime vegetation at Holme. in the north-west of 
