Fern rhizome,light micrograph. Transverse section through the center of a rhizome from the Killarney fern (Trichomanes speciosum). Thick-walled sclerenchyma cells (black-red) surround the central vascular cylinder (stele). From the outside of the stele inwards are four thin layers: the endodermis (red),the pericycle,and two layers of phloem. In the centre are the large thick-walled cells of the xylem. Magnification: x100 when printed at 10 centimetres wide | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Wheeler, Dr. Keith |
Bildgröße: | 5616 px × 3744 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |