Colour-enhanced X-ray of a Rhubarb leaf (Rheum sp. ) and stalk. The stalks are eaten, and are a good source of vitamin C (ascorbic acid). The leaves contain oxalic acid, however, and are toxic. | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Kinsman, Ted |
Taille de l’image : | 4557 px × 5305 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |