Quercus roburL.

English oak

WFO wfo-0000292858 Accepted WFO 2026-06 8 photographs CC0 / CC BY

Plate 1 figs. a–h

Quercus robur, photographed by Zeke Marshall
fig. a Zeke Marshall, CC BY 4.0 / 2022-06-13 / obs. 205812404
Quercus robur, photographed by Марина Садыкова
fig. b Марина Садыкова, CC BY 4.0 / obs. 205689457
Quercus robur, photographed by Юрий Данилевский (Yuriy Danilevsky)
fig. c Юрий Данилевский (Yuriy Danilevsky), CC BY 4.0 / obs. 205708865
Quercus robur, photographed by Pavel Kacl
fig. d Pavel Kacl, CC BY 4.0 / obs. 205682350
Quercus robur, photographed by Alexis Tinker-Tsavalas
fig. e Alexis Tinker-Tsavalas, CC BY 4.0 / obs. 205480508
Quercus robur, photographed by Lisa Phipps
fig. f Lisa Phipps, CC0 1.0 / obs. 205219631
Quercus robur, photographed by Radosław Puchałka
fig. g Radosław Puchałka, CC0 1.0 / obs. 204624191
Quercus robur, photographed by Lisa Phipps
fig. h Lisa Phipps, CC0 1.0 / obs. 205217659

Every figure is a research-grade observation under CC0, CC BY or CC BY-SA, rehosted with the photographer’s name, the licence and the observation it came from. Photographs under a NonCommercial licence are excluded from this site and are never stored, which costs us a great many pictures and is not negotiable.

Confused withby our own model

These are not lookalikes we guessed at. Each one is a species our identification model genuinely mistook for this plant, and how many times. The error rate is published.

Flowering n = 196 observations

Peak flowering in May, from 196 community-annotated observations worldwide. This is a global aggregate, not a forecast for your garden: the same species flowers on different dates in different hemispheres, and citizen-science records cluster near cities, at weekends, and in spring. Where a species has fewer than 30 annotated records we do not draw this chart at all.

Also published as 324 synonyms

A synonym is not an error. It is a record of botanists disagreeing, in print, about where this plant belongs. Each of these was somebody’s considered answer.

  • Quercus abbreviata Vuk.
  • Quercus accessiva Gand.
  • Quercus accomodata Gand.
  • Quercus acutiloba Borbás
  • Quercus aesculus Boiss.
  • Quercus aestivalis Steven
  • Quercus afghanistanensis hort. ex K.Koch
  • Quercus alligata Gand.
  • Quercus altissima hort. ex Petz. & G.Kirchn.
  • Quercus amoenifolia Gand.
  • Quercus annenkowi Kauffm. ex Trautv.
  • Quercus appenina var. cylindracea (Guss. ex Parl.) Nyman
  • Quercus appenina var. rumelica (Griseb. & Schenk) Nyman
  • Quercus apula Gand.
  • Quercus arenaria Borbás
  • Quercus argentea Morogues
  • Quercus assimilis Gand.
  • Quercus asterotricha Borbás & Csató
  • Quercus asturica Gand.
  • Quercus atropurpurea hort. ex K.Koch
  • Quercus atrosanguinea hort.
  • Quercus atrovirens Sm.
  • Quercus aurea hort. ex K.Koch
  • Quercus australis A.Kern.

and 300 more.

Sourcesevery claim on this page

  1. World Flora Online Plant List. accepted name, authority, classification. CC0. Retrieved 2026-07-12.
  2. iNaturalist. photographs and flowering annotations, CC0 / CC BY / CC BY-SA only. per photograph. Retrieved 2026-06-27.

We publish what we can source and we say so when we cannot. This page has no care advice, no toxicity claim and no native range, because we do not yet have those from a source we can cite.