| Species hybrid | Quercus petraea x robur = Q. x rosacea (hybrid oak) |
| Genus | Quercus (oaks) |
| Family | FAGACEAE (forest trees) |
| Order | FAGALES (forest trees) |
| Subclass | EU-DICOTS (dicotyledonous flowering plants) |
| Class | MAGNOLIOPSIDA (flowering plants) |
| Phylum | TRACHEOPHYTA (vascular plants) |
| Kingdom | PLANTAE (plants) |
| Domain | Eukaryota (eukaryotes) |
| Life | BIOTA (living things) |
| Records of Quercus petraea x robur = Q. x rosacea (hybrid oak) : | ||||
| 1: Quercus petraea x robur = Q. x rosacea (hybrid oak) | ||||
| 26 Aug 2012 | OSGR: SH85 | 53° 10’ N, 3° 50’ W | Vice County: Denbigh (VC 50) | Wales |
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| 2: Quercus petraea x robur = Q. x rosacea (hybrid oak) | ||||
| 13 Sep 2008 | OSGR: SU26 | 51° 20’ N, 1° 40’ W | Vice County: North Wilts (VC 7) | England |
| hybrid oak with broad leaves and stalked acorns . Photos: Leaves, acorns | ||||
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| Author | Year | Title | Source | |
|---|---|---|---|---|
| Crawley, M. | 2005 | The Flora of Berkshire | 1375pp, Brambleby Books |
Quercus petraea x robur = Q. x rosacea (hybrid oak) may also be included in identification literature listed under the following higher taxa:
 NBN (data.nbn.org.uk)
has a distribution map for Quercus petraea x robur = Q. x rosacea (hybrid oak)
|
 BioInfo (www.bioinfo.org.uk)
has 1 host/parasite/foodplant and/or other relationships for Quercus petraea x robur = Q. x rosacea (hybrid oak)
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The hybrid between our two native oaks is very variable and very common. Back-crossing produces intermediates in all the characters which separate the parent species.
Clues to hybridity:
| 1. combination of characters eg stalked acorns and stellate leaf hairs |
| 2. some leaves with base asymmetric, with a small auricle on one side but not on the other |
| 3. greater than usual variation in shape of leaf base so that some have cuneate bases and some are weakly auricled. |
| 4. broad leaves with rounded lobes. These forms can be quite striking and rather attractive. |
Unless otherwise expressly stated, all original material on the BioImages website by Malcolm Storey is licensed under the above Creative Commons Licence.
Photographs from other photographers are used with permission but not included under the above CC licence.