Hogweed
Zaleya galericulata

Robust, perennial or annual herb, stems prostrate to ascending, 10–60 cm long, often arising from a thick rootstock.
Leaves ovate or oblong, to 50 mm long, 25 mm wide; petiole to 20 mm, partially ensheathing stem.
Perianth segments 2–3 mm long, pink or purple inside.