 It has also become clear that this plant is not exclusively dependent on floodplains, their soil, their disturbance regime and the overstory particular to a floodplain.Indeed, the plant has been found to flourish under the black locusts ("Robinia pseudoacacia") (illustrated by embedded map).Research since the map was developed has found extensive populations in many areas far from a floodplain but very much in a disturbance based system.