Himalayan balsam stem. Light micrograph of a section through the stem of a Himalayan balsam (Impatiens glandulifera) plant,showing one branch and two stipules stage. From the outer tissue to the pith (centre): epidermis with cuticle (red); collenchyma tissue (blue-violet,thick-walled) and cortex of large parenchyma cells (blue); ring of vascular bundles containing phloem cells (blue,small); single layer of thick files of cambium tissue (violet-blue); xylem vessels (red and white vessels). At the centre of the stem is the pith,which consists of very large parenchyma cells (red) that store water. Magnification: x4 when printed 10 centimetres wide | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Wheeler, Dr. Keith |
Bildgröße: | 4935 px × 3898 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |