Oleander stem. Light micrograph of a cross-section through the stem of an oleander (Nerium oleander) tree. The outer cortex (red) is made of collenchyma and the lower cortex has a ring of bundles of phloem fibres (pale yellow) among which is phloem with sieve tubes (dark red). Under the phloem is a ring of cambium (dark red) and under this a thick ring of wood (yellow and pink). The solid pith (centre,red) is composed of large parenchyma cells. Magnification: x11 when printed 10 centimetres wide | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Wheeler, Dr. Keith |
Bildgröße: | 4524 px × 4630 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |