temporary fields in different parques of Leipzig, seemingly as an offer for pollinating insects. Also consisting of https://www.inaturalist.org/observations/31187415
Earlier observations, same plant, other locations: https://www.inaturalist.org/observations/28176253, https://www.inaturalist.org/observations/28687826
(I'll tick the cultivated check-box when the plant is IDed to species, so it stays in the needs-ID list until then).
Published in: Eliáš P (ed.). 2023. Zaujímavejšie floristické nálezy. Bulletin Slovenskej botanickej spoločnosti 45 (2): 189–204.
http://sbs.sav.sk/SBS1/bulletins/abs/bull45_2.htm#09
This is a new one for me -- I'm unfamiliar with it...