post oak Fagaceae Quercus stellata Wangenh. Listen to the Latin symbol: QUST Other Fact Sheets
Leaf: Alternate, simple, oblong, 6 to 10 inches long, with 5 lobes, the two middle lobes are distinctly square, resulting in an overall cruciform appearance, thickened texture; green above with scattered stellate pubescence, pubescent and paler below.
Flower: Species is monoecious; male flowers are yellow-green, borne in naked, hanging catkins, 2 to 4 inches long; female flowers are reddish and appear as single, short spikes from leaf axils, appearing with the leaves.
Fruit: Acorns are 1/2 to 2/3 inches long and ovoid; cap is bowl-shaped and warty/scaly, covering 1/3 to 1/2 of the nut; Individual scales are more apparent than white oak; maturing in one year and ripening in the fall.
Twig: Gray or tawny-tomentose and dotted with numerous lenticels; multiple terminal buds are short, blunt, orange-brown, somewhat pubescent, short, thread-like stipules may be present.
Bark: Ashy gray and initially quite scaly, later becoming more blocky and ridged, very similar to white oak.
Form: A small to Medium sized tree up to 65 feet tall with a crown that has gnarled and twisted branches.

Looks like: sand post oak - overcup oak - bur oak - white oak
leaf flower fruit twig bark form1 map
Additional Range Information:
Quercus stellata is native to North America.
Range may be expanded by planting.
See states reporting post oak.
More: Fall Color
External Links:
USDAFS Silvics of North America
USDAFS Additional Silvics
Landowner Factsheet
USDA Plants Database
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Photos and text by: John Seiler,
Edward Jensen, Alex Niemiera,
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