[www.invasiveplantatlas.org] Ecological threat: Ecological Threat A. corsicum has the potential to crowd out and displace native plants including rare species. It can be found in pastures, fields, and waste areas. A. corsicum is a hyperaccumulator (plants that extract metals from the soil), sometimes used to remove heavy metals from contaminated sites. Hyperaccumulators are highly toxic, containing concentrations of their target metals far in excess of levels considered toxic to cattle, sheep, swine and chickens. (contributed by Mary Ann Machi)