Shepherd's-purse type 16 - Capsella bursa-pastoris type 16
Favourite Photos
Species Description
A squat plant with almost succulent leaves, pinnatifid, lobes rounded, tightly squashed together and overlapping (a bit like endive) and stem inconspicuous, instead the flowers often arise directly from the rosette; sepals green with red margins, hairy; petals narrowly obovate c. 2 x as long as wide; capsules obovate-rounded, not notched, style well-exserted, held on long whispy pedicels >5 x in length which are erecto-patent and curving outwards. Looks similar to some photos on GBIF of Capsella rubella but it's not that.
Looks to be the same as this taken from London by Daniel Cahen.