Aphanes arvensis agg.
These annuals occur in arable fields, in thin and open grassland, and in bare patches on rough ground on dry, basic or acidic soils. In all these places, the cover of perennial species is restricted by disturbance or summer drought. 0?610 m (Great Dun Fell, Westmorland).
There is no change in the overall distribution of this aggregate, which includes both A. arvensis and A. australis, since the 1962 Atlas. Vegetative plants cannot be assigned with confidence to the segregates, and some recorders have not distinguished fruiting material of the two species. Intermediates also occur and are also mapped here.
The distribution of the two species in this aggregate is given in their respective accounts.
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