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Brenchley . — The Weeds of Arable Land in 
Urticaceae 
Liliaceae 
Gramineae 
55 
Urtica dioica 
Ornithogalum pyrenaicum 
Avena fatua 
Phleum pratense 
clay and sandy loam 
clay 
black gravel 
clay 
Comparison of the Weed Flora of the Wiltshire and Somerset 
Districts with that of East Bedfordshire. 
A. Weeds of clay soils. 
The general aspects of the weed floras are fairly comparable, both as 
regards the distribution and variety of the species. Certain differences are 
however evident, of which the following are the most striking : 
Bartsia Odontites 
Matricaria inodora 
Plantago media 
Capsella Bursa-pastoris 
Tussilago Farfara 
Euphorbia exigua 
B. Weeds of chalk soils. 
Bedfordshire. 
Typical and practically 
confined to clay. 
Never seen on chalk 
Very plentiful 
Scarce ; distributed on 
various soils 
Scarce on clay 
Universal in distribu- 
tion 
Scarce ; only one re- 
cord on clay 
West Country 
Districts. 
Chiefly on chalk ; scarce 
on clay 
Totally absent 
Fairly frequent ; prac- 
tically confined to 
clay 
Chiefly on clay 
Chiefly on clay 
Frequent ; chiefly on 
clay 
The West Country chalk soils exhibit many species of plants, of which 
a large proportion are definitely characteristic of the chalk. The Bedford- 
shire soils, on the contrary, have relatively few distinct chalk weeds, of 
which still less can be called definitely characteristic. 
Lychnis Githago 
Silene Cucubalus 
Campanula hybrida 
Linaria spuria 
vulgaris 
Myosotis arvensis 
Bedfordshire. 
No record 
Symptomatic of chalk 
One record ; sand and 
clay 
55 55 heavy clay 
„ „ chalk and clay 
Universal in distribu- 
tion 
West Country 
Districts . 
Confined to chalk 
Also occurred on clay 
Symptomatic 
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