ID:

Stace 4:

Stems to 25 cm; stem-leaves serrate in distal half only, with teeth < 1.5 mm, the uppermost leaf about 6 - 16 mm; petals 2.5 - 4.5 mm; fruiting pedicels 6 - 30 mm; 2n=28. Common throughout British Isles, mostly in lowlands.