Horsetail spores. Coloured scanning electron micrograph (SEM) of spores of a horsetail (Equisetum arvense) plant. The spores (round) bear elaters (helical),which expand and contract with changes in humidity. Elaters help to tangle spores together into a clump called a propagule,and to dig the spores into the soil. Magnification: x350 when printed 10 centimetres wide | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Power And Syred |
Bildgröße: | 4209 px × 4209 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |