Can you name the species?
Lysimachia vulgaris: recognized as Lysimachia because of the five stamens partially joined at the base, and the sepals not fully covering the developing buds, among other things, and as L. vulgaris because (besides the fact that itâs in Europe) the inflorescence is above the leaves and the leaves are relatively narrow.
(Actually, the above paragraph is not "how I recognized it": I glanced at it and said "Thatâs a loosestrife!" and then I tried to come up with concrete justification after the fact. Iâm sure Iâm right, though.)