Quercus ×mazei Coombes & R.A.Cameron
Full name:
Infrageneric Classification:
Parentage:
Etymology:
The epithet honors Prof. Jack Maze, a Canadian botanist who was the first to study this hybrid.
Nomenclature Note:
Name not validly published by Reinhold L. Lübbert in 2001 in honour of J. M. Maze for this cross. The name entered use in horticulture but only in 2026 was validly published with the required description in Latin and nomination of holotype.
Description:
Deciduous colony-forming shrub to 4 m tall or single-stemmed tree to 18 m. Young shoots tomentose, usually lacking corky wings. Leaves elliptic to obovate, 9-11 or sometimes up to 18 cm long, 5-8 or sometimes 11 cm wide. Lobes usually mucronate, 3-8 on each side, variable in depth, the deepest sinus at or just below the center of the leaf and reaching nearly to the midrib, smaller towards the apex; larger lobes themselves often lobed or with small teeth, the large sinus typical of Q. macrocarpa only occasionally seen. Base cuneate or sometimes rounded. Petiole to 3 cm long. Acorn cups conspicuously tuberculate, cupule 1.27 cm-2.29 cm across, usually lacking a fringe of slender scales on the rim, if present, shorter and less conspicuous than those of Q. macrocarpa.
Natural Distribution:
USA: Colorado, New Mexico, South Dakota, Wyoming.