Polarised light micrograph of a spiral vessel from the stem of a rhubarb plant (Rheum rhabarbarum). Spiral vessels are found in most plants. They may be concerned with water or air movement within the plant. They were first described by Marcello Malpighi in 1662, but information about their exact function is still vague. Magnification: x136 at 10cm wide. | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Lowry, Steve |
Taille de l’image : | 3866 px × 2587 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |