Report from the Oak ICRA checklist
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Full Name: - Quercus ×introgressa

Quercus ×introgressa P. M. Thomson (1977)
Infrageneric Classification
Subgenus Quercus, Section Quercus
Q. bicolor Willd. × Q. muehlenbergii Engelm. × Q. prinoides Willd.
Natural Distribution
USA: (Missouri)
Illustration of Leaves
Image from a plant at the Sir Harold Hillier Gardens (UK) ©Jan De Langhe, Ghent University Botanical Garden, 2010
On-line Herbarium Specimen
Recent Monograph References
(Miller & Lamb) Oaks of North America (1985) page 180, 194 mentions