Report from the Oak ICRA checklist
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Full Name: - Quercus alba 'Congzam'

Quercus alba 'Congzam' Cultivar name has been accepted as Registered
Infrageneric Classification
Subgenus Quercus, section Quercus (the white oaks)
Nomenclature Note
From Lake County Nursery, Ohio, USA. Marketed under the trade designation CONGRESSIONAL