Why Is It Called Blackjack Oak?

Blackjack oak is a common name for several different types of oak trees, including the blackjack oak (Quercus velutina), chestnut-leaf oak (Quercus castanea), and pin oak (Quercus palustris). The name “blackjack oak” likely comes from the Spanish word for “blackjack,” acero negro.

The name may also be derived from the trees’ characteristic black bark.

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