97 
relation to the Soils on which they grow . II. 
and loam. No record from ordinary sand. Frequently dominant on all 
types of soil, including ‘bake’. (This plant is perhaps more widely 
distributed in area than in Bedfordshire, but as it is not so abundant in 
quantity in the West Country, it is consequently less in evidence.) 
Capsella Bursa-pastoris. Practically confined to clay and loam. Never 
dominant. 
Resedaceae. Reseda lutea. Characteristic of chalk, but only occurring 
in very small quantity. 
Violaceae. Viola tricolor . Practically confined to chalky soils. Very 
rare on clay. Never dominant. 
Caryophyllaceae. Arenaria serpyllifolia . Occasionally found, usually 
on chalky soils. Never dominant. 
Cerastium vulgatum . Distributed on various types of soil, but seldom 
seen and never very prevalent. 
Lychnis Githago. Confined to chalk. Once dominant. 
Lychnis vespcrtina. Chiefly on chalky soils, sometimes on clay and 
loam. Of frequent occurrence as an occasional or scarce weed. 
Silene Cucubalus. Chiefly on chalky soils ; occasionally on clay, where 
it was once dominant. 
Stellaria media . Universally distributed. Occasionally dominant on 
any soil. 
Rosaceae. Potcntilla anserina . Occasionally seen on chalky soils and 
clay. Once dominant on chalk. 
Umbelliferae. Daacus Carota . Generally found on pure chalk, some- 
times on chalky loam. Never dominant, usually only occasional. 
Heraclenm Sphondylium . Characteristic of chalky soils. Never 
dominant. 
Scandix Pecten . Characteristic of chalky soils. Very occasional 
elsewhere. Once dominant on red land. 
Rubiaceae. Galium Aparine. Generally distributed. Rarely dominant 
or sub-dominant, though of very frequent occurrence. 
Sherardia arvensis. Rarely seen, but then chiefly on chalk in very 
small quantities. 
Valerianeae. Valerianella olitoria . Confined to chalk. Rarely 
seen. 
Dipsaceae. Scabiosa arvensis . Characteristic of chalk soils. Never 
dominant. 
Compositae. Anthemis sp . Chiefly on clay or loam, but distributed 
over other soils. Once dominant on clay. 
Carduus arvensis. Universally distributed and very common. Dominant 
on any soil. 
Centaurea nigra. Chiefly found on chalk and red land ; only occasionally 
recorded from other soils. Never dominant. 
H 
