relation to the Soils on ivhich they grow. II. 105 
Bedfordshire. 
Poa pratensis 
Daucus Carota 
Reseda lutea 
Chenopodium album 
Heracleutn Sphondylium 
Lithospermum arvense 
Papaver Rhoeas 
Plantago lanceolata 
„ major 
Scandix Pecten 
Euphorbia exigua 
„ Helioscopia 
Potentilla anserina 
One record ; gravelly 
loam 
„ „ on chalk 
5) 33 33 
No record from chalk 
Not recorded 
33 33 
Seldom recorded from 
chalk 
Universally distributed 
Scarce 
Universally distributed 
Designated as ( Calci- 
fuge ’ 
33 5) S3 
No record on chalk 
West Country 
Districts. 
Symptomatic 
Frequent on chalk 
Very characteristic of 
chalk 
33 3) 3) 
3) 33 and 
frequent 
Characteristic of chalk 
Frequent on chalk 
Characteristic of chalk 
Frequent on chalk 
33 33 33 
Occasionally seen on 
chalk 
C. 4 Calcifuges/ 
Of the various so-called { Calcifuges * of the Bedfordshire districts 
Poa annua is the only species which retains that character in the West 
Country. All the others are more or less associated with chalk. 
Bedfordshire Calcifuges. 
Alopecurus agrestis 
Anagallis arvensis 
Euphorbia exigua 
„ Helioscopia 
„ peplus 
Veronica arvensis 
„ hederaefolia 
Occurrence in West Country. 
Recorded several times on chalk ; dominant in 
one field. 
Frequently recorded from chalk, but usually very 
scanty. 
Frequent on chalk. 1 
33 33 3 3 
3 3 33 33 
Only three records, but all from chalk. 
Several records from chalk, with one of dominance. 
1 In Bedfordshire all species of Euphorbia are apparently absent from chalk, while certain of 
the species are frequent in that habitat in the West Country. It has been criticized that ‘ it is 
therefore a mistake to call them “ calcifuge ”, as it can only mean that there is some other factor, 
commonly present with chalk in Bedfordshire, which determines absence ’. Strictly, this criticism 
is quite just, but for the purpose of this investigation the word ‘ calcifuge 5 is used in a restricted 
local sense, in default of a better term, to indicate the absence of any species from chalk soils in 
a particular locality. Future work will probably sort out the true calcifuges from the local calcifuges. 
