Quercus subg. Quercus
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Quercus subgenus Quercus is one of the two subgenera into which the genus Quercus was divided in a 2017 classification. It contains about 190 species divided among five sections. It may be called the
1. English Oak
Quercus castanea leaves and acorns
Quercus coccinea
Leaves of Quercus ellipsoidalis
Quercus rubra
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Quercus rubra, the northern red oak or common red oak, is an oak tree in the red oak group. It is a native of North America, in the eastern and central United States and southeast and south-central Ca
Quercus subg. Quercus
…of the total diversity. Quercus castanea leaves and acorns Quercus coccinea Leaves of Quercus ellipsoidalis Quercus myrtifolia growing as a shrub Quercus rubra in autumn (in cultivation) Section Protobalanus Quercus sect. Protobalanus was first established as a subgenus by William Trelease in 1922 and then…
Quercus rubra @ Tortworth Court
Leaves and acorns
Autumn foliage
Detail of mature bark