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Salido AL, Hasty KL, Lim J-M and Butsher DJ (2003) Phytoremediation of arsenic and lead in contaminated soil using chinese brake ferns (Pteris vittata) and indian mustard (Brassica juncea).
When Ma and colleagues screened plants growing on soil heavily contaminated by wood preservative, they found the brake fern (Pteris vittata) comprised arsenic concentrations of 4,000 parts per million, while other plants held only a fraction of that amount.
Pteris vittata, or brake fern, could potentially be used to clean up the poison, which is both naturally occurring in soil and unnaturally present in farm chemicals, wood preservatives, and other products.