Polarised light micrograph of a tangential section of the mature wood of the English. or pendulate, oak (Quercus robur). Oak trees do not bear acorns until they are around 40 years old. Both uniseriate and multiseriate rays are evident. Magnification: x68 at 10cm wide. | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Lowry, Steve |
Bildgröße: | 3838 px × 2601 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |