Scanning electron micrograph (SEM) of a maidenhair spleenwort (Asplenium trichomanes) frond. At left are sori (dark brown), clusters of sporangia, which hold spores (light brown), the reproductive cells of ferns. Magnification: x135 when printed at 10 centimetres wide. | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / KARL GAFF |
Bildgröße: | 3744 px × 2806 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |