Łódź, Park Kilińskiego

The flies are Stomorhina lunata. It is native to North America, but widely spread over the world. Possible weed? Edible plant - young plant boiled. Herbal plant - in traditional oriental medicine, has been used to treat indigestion, epidemic hepatitis, enteritis, lymphadenitis, and hematuria; an ethanol extract of the roots is efficacious in treatment of inflammatory diseases.