We first knowingly saw Four-Leaved Allseed locally during 2017 in two distinct locations in the London Borough of Bexley, viz.
During the past few days we have seen Four-Leaved Allseed locally viz.
in an area where it had previously been seen.
According to Kent Botany 2017: 'Polycarpon tetraphyllum (Four-Leaved Allseed) shows how difficult at times it can be to credit how quickly a plant's distribution - or at least, our knowledge of it - can change. A distribution map was given with Kent Botany 2015, in order to demonstrate a light scatter of records since the first publication (in Kent Botany) of a record for the county. Now we have moved on significantly from 2015, with 40 monad records for East and West Kent .... there were 24 sightings in 2017 alone. Recording is of course a matter of sampling, and is dependent upon a botanist being able to recognise a taxon, so any such snapshot of distribution will have a built-in time lag; but even with these limitations, the expansion of Polycarpon to such a wide-spread presence has left behind the standard Flora of the British Isles, which recognises it in the Channel Islands, the south-western English counties and only casual elsewhere. Our 2017 records continued to come from pavements, road gutters and house drives, especially those with brick pavers. It went onto the rare plant register originally as a nationally rare plant, but that status must warrant revision.'
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Update 14 February 2018:
We have found Four-Leaved Allseed growing in three more local distinct Locations viz.
So now seen recently in three new distinct locations and five distinct Locations in toto locally.
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