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Oak species
Quercus species

Fagaceae

There are 38 Texas oaks that are considered trees. All oaks are divided into two groups: the white oak group and the red or black oak group. White oaks produce acorns annually, the leaves have rounded lobes without bristle tips, the inside of the acorn cup is smooth, and the bark is generally whitish-gray and scaly. Red or black oaks produce acorns that take two years to mature, the leaves are sharply lobed with spines at the tips, the inside of the acorn cup has dense hairs or fuzz, and the bark is black or dark gray and furrowed.

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