Horsetail spores. Coloured scanning electron micrograph (SEM) of spores of a horsetail (Equisetum arvense) plant. The spores (round) bear elaters (brown),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 | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Nishinaga, Susumu |
Taille de l’image : | 3626 px × 4854 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |