Polarised light micrograph of a section of the common or black alder (Alnus glutinosa). This is a European deciduous tree (family Betulaceae) growing to a height of 25m. Numerous longitudinally sectioned medullary rays are seen running horizontally. Magnification: x27 at 10cm wide. | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Lowry, Steve |
Taille de l’image : | 4608 px × 3792 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |