bluejack oak Fagaceae Quercus incana Bartram Listen to the Latin symbol: QUIN Other Fact Sheets
Leaf: Alternate, simple, narrow elliptical, broadest above the middle, 2 to 4 inches long, 1/2 to 1 inch wide. The leaves may have some shallow bristle tipped lobes at the tip, bluish gray above and white woolly below.
Flower: Species is monoecious; male flowers are yellow-green long catkins (2 to 3 inches long); females are green to reddish, very small spike in leaf axils, appearing with the leaves.
Fruit: Acorn, round nut 1/2 inch in diameter, brown; cap usually shallow but may cover up to 1/3 of nut, scales thin.
Twig: Slender, initially quite hairy and light brown, later becoming hairless and darker, buds are sharp pointed, reddish brown, typically clustered at branch tips.
Bark: Dark often nearly black, quite blocky, becomes rough quite early.
Form: Small tree, often only a shrub, to 30 feet, very poor form with numerous dead branches.

Looks like: Darlington oak - shingle oak - willow oak - laurel oak
leaf flower fruit twig bark form1 map
Additional Range Information:
Quercus incana is native to North America.
Range may be expanded by planting.
See states reporting bluejack oak.
More: Fall Color
External Links:
USDAFS Additional Silvics
USDA Plants Database
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Photos and text by: John Seiler,
Edward Jensen, Alex Niemiera,
and John Peterson
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