Abstract
A ZAMBIAN flowering plant Becium homblei of the family labiatae grows on soils rich in copper1, and it has been shown to accumulate heavy metals2–4. Other plants also have this characteristic, and their ability to immobilize in insoluble form and to regulate internal distribution of absorbed metals has been noted5,6. We agree that these two properties are important in B. homblei, but also suggest that an extrinsic factor, peculiar to the derived savanna vegetation of south-central Africa, must be taken into account.
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REILLY, C., STONE, J. Copper Tolerance in Becium homblei. Nature 230, 403 (1971). https://doi.org/10.1038/230403a0
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DOI: https://doi.org/10.1038/230403a0
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