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. | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Kinsman, Ted |
Bildgröße: | 4557 px × 5305 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |