Trees
Quercus nigra
Water Oak
NATIVE
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Triangular or diamond-shaped top half of leaves
Credit: Kristie Gianopulos. Used with permission.
 
 
 
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Coefficient of Conservatism Values (more info)
Mountains
4
Piedmont
3
Coastal Plain
3
National Wetland Plant List Status (more info)
Eastern Mountains/Piedmont
FAC
Coastal Plain
FAC

FIELD ID CHARACTERISTICS:

Leaves commonly pear-shaped but vary considerably. May be tardily deciduous.

Synonym(s): Quercus microcarya

Description: Medium-sized tree, up to 25 m. Although deciduous, leaves are slow to fall, remaining into winter.

Leaves: Alternate, simple, club-shaped or 3-lobed but highly variable. Leaves widest toward the tip, obovate in general outline and about 10 cm long.

Flowers/Fruit: Flowers are catkins. Dark, oval acorns are about 1 cm wide and only a third covered by the saucer-like cup. Inside, cup is shiny-pubescent. Flowers in April; acorns mature September to November of following year.

Habit and Range: Bottomlands, brownwater floodplains and occasionally blackwater floodplains, moist soils, and wet flats, in the Coastal Plain and Piedmont. Occasionally found in the easternmost Mountains.

Typical Max Plant Height (m):
25
Leaf Arrangement:
Alternate   
Leaf Division:
Simple   
Leaf Margin:
Entire   
Leaf Shape:
Obovate, Triangular      
Inflorescence Color:
Yellow, Green   
  
Fruit Color:
Brown   
Lifespan:
Perennial
Group:
Dicot
Family:
Fagaceae / Beech
Ecoregions Found In:
Statewide


COMMON CONFUSIONS:

Quercus phellos (willow oak) has similar leaves that are narrower, with bristles on the tips.

Click here to view Quercus phellos.

Link to side-by-side comparisons page