- Plants
- ›Vascular Plants
- ›flowering plants
- ›Dicots
- ›beeches, oaks, walnuts, and allies
- ›beech family
- ›Quercus
- ›Quercus
- ›Quercus
Quercus
An oak is a hardwood tree or shrub in the genus Quercus of the beech family. They have spirally arranged leaves, often with lobed edges, and a nut called an acorn, borne within a cup. The genus is widely distributed in the Northern Hemisphere, with some 500 species, both deciduous and evergreen. Fossil oaks date back to the Middle Eocene. Molecular phylogeny shows that the genus is divided into Old World and New World clades, but...
5 branches of this group, most-observed first
Pedunculate Oak Complex
complexQuercus robur
Quercus petraea
complexQuercus petraea
Quercus pubescens
complexQuercus pubescens
Quercus × streimii
hybridQuercus × streimii
Quercus × pseudodalechampii
hybridQuercus × pseudodalechampii
Where it lives
Recorded sightings
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geo-referenced records in GBIF, from museums, herbaria and field observers.
Drag the globe to turn it. Dots are where records exist, not a range map; darker means more records.
In the old herbals & bestiaries
Notable Commentaries on the History of Plants
Leonhart Fuchs · 1542 · p.263
Notable Commentaries on the History of Plants
Leonhart Fuchs · 1549 · p.261
Six Groups of the History of Plants
Rembert Dodoens · 1583 · p.832
Six Groups of the History of Plants
Rembert Dodoens · 1583 · p.832
Ortus sanitatis
1491 · p.45
De medicinali materia libri sex
Dioscorides · 1552 · p.155
Commentaries on the Six Books of Dioscorides
Pietro Andrea Mattioli · 1560 · p.239
Commentaries on the Six Books of Dioscorides
Pietro Andrea Mattioli · 1560 · p.242
Discourses on the Six Books of Dioscorides
Dioscorides; Pietro Andrea Mattioli (comm.) · 1568 · p.1266
History of Rare Plants of Pannonia
Carolus Clusius · 1576 · p.19
History of Rare Plants Observed in Pannonia
Carolus Clusius · 1583 · p.18
History of Rare Plants
Carolus Clusius · 1601 · p.33
In the stacks
Searching the stacks…
Every page naming Quercus in the Biodiversity Heritage Library →
This page is assembled live from iNaturalist, GBIF, Wikipedia, the Source Library and the Internet Archive. It is not yet part of the hand-edited codex. iNaturalist taxon 1709094.