Waterfern,Azolla filiculoides
Numéro d’image : 11527288
| Azolla waterfern. View of the floating leaves of the waterfern Azolla filiculoides. The leaves of waterfern support colonies of Anabaena,a blue- green alga which fixes atmospheric nitrogen and enriches the water in which it grows. For this nitrogen-fixing ability,species of waterfern are grown in rice paddies in India as a fertiliser plant. The roots which are unanchored have a very simple structure of scientific interest; the roots are generated by multiple divisions in various planes from one apical cell. Azolla filiculoides is an American waterfern,now naturalised in Britain after being introduced in 1899. Magnification: x0.5 at 6x6cm size | |
| Licence : | Droits gérés |
| Crédit: | Science Photo Library / Burgess, Dr. Jeremy |
| Taille de l’image : | 3087 px × 3091 px |
| Model Release : | Non requis |
| Property Release : | Non requis |
| Restrictions : | - |
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