Report from the Oak ICRA checklist
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Full Name: - Quercus ×hispanica 'Ragnal'

Quercus ×hispanica 'Ragnal' Lodd. ex Loud., Arbor. Fruct. Brit., 3: 1849 (1838) as "Q. Cerris Ragnal; Q. Ragnal Lodd. Cat. ed. 1836" Cultivar name has been accepted as Registered
Infrageneric Classification
Subgenus Quercus, section Cerris
Parentage
Q. cerris L. × Q. suber L.