Species Profiles Cumulative Quiz 4 View

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water oak (Quercus nigra)
Family: Fagaceae

 

A table detailing the characteristics of the water oak

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Form:

This is a medium sized tree reaching 70-100 ft in height and 3-4 ft in dbh. It has a rounded crown and a slender bole.

Leaves:
 Arrangement: alternate

 Shape: varies – spatulate, oblanceolate or shallowly 3-lobed

 Margin: bristle tipped

 Texture: glabrous above and rarely pubescent below

 Variation: pinnate

Leaves of a water oak

Bark:

The bark is uncharacteristically smooth and thin compared to most oak species. It develops shallow furrows with wide scaly ridges.

Bark of a water oak

Twigs and Buds:

The twigs have a light reddish-brown color, and are slender and glabrous. The buds are covered in light brown scales.

Twig and buds of a water oak

Flowers and Fruit:

Acorns are ½ inch in height with cap covering 1/3 of acorn.

Distinguishing Characteristics:

It’s lower branches droop downward with age (ascending branches). Look for the small spatulate leaf shape.

Range:

It occurs north to New Jersey, south to northern Florida, and west into Oklahoma.

Silvics:

Water oak is intolerant to shade. It is a classic bottomland species that can sometimes be found on moist to mesic uplands as well, often when it is planted.

Ecological and Cultural Importance:

It is a valuable source of pulp and lumber. Acorns are eaten by waterfowl, wild turkey, and various other wildlife.