Report from the Oak ICRA checklist
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Full Name: - Quercus robur 'Nigra'

Quercus robur 'Nigra' C. de Vos, Bered. Woordenboek, 100 (1867) as "Quercus pedunculata nigra" Cultivar name has been accepted as Registered
Infrageneric Classification
Subgenus Quercus, section Quercus (the white oaks)
Nomenclature Note
Ill: Van Houtte, Fl. des Serres, 17: 119, tab. 1783 (1868)
Synonyms in this Database
Quercus robur 'Fennessii Cupreis' Lav., (1877) nom. illegit.
Main Horticultural References
(Krüssmann) Manual of Cultivated Broad-leaved Trees & Shrubs (in English) vol. 3 (1986) page 106
The New Royal Horticultural Society Dictionary of Gardening vol. 3 (1992) page 787
The Royal Horticultural Society Dictionary of Gardening, 2nd ed. vol. 4 (1956) page 1731 as Q. Robur nigra
(Bean) Trees & Shrubs Hardy in the British Isles, 8th ed. vol. 3 (1976) page 510