Francisco Freire Allemão e Cysneiro

Francisco Freire Allemão e Cysneiro (24 June 1797 – 11 November 1874) was a Brazilian botanist who collected in northeast Brazil and along the Rio de Janeiro. His association with the Brazilian National Museum in Rio de Janeiro took place at a time when Brazilian botany was dominated by foreigners.

Among his many duties as physician of the Brazilian court was to fetch the Emperor's bride from Italy.

Some genera and species named by him :

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