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A new scientific name for Brazil's national tree

Scientists have long wondered about the correct taxonomic classification of Pau-brasil, the national tree of Brazil. A new study using DNA sequences to analyze the evolutionary relationships of Pau-brasil and some 200 closely-related plants from right across the tropics (together known as the Caesalpinia group) confirms that Pau-brasil represents a unique and distinct evolutionary lineage, meriting recognition as a distinct genus.
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