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Nickel tree endemic to New Caledonia
Pycnandra acuminata - also called Blue sap or Nickel tree - is a tree of the Sapotaceae family, endemic to the dense tropical rainforests of New Caledonia. Its particularity is due to the exceptionally high rate - over 20% - of nickel citrate contained in its sap which takes the form of a blue-green latex.
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