Fern fronds. Fern fronds are tightly coiled when young,unwinding the coil as they expand. Ferns are spore-bearing plants and the spores are produced on the undersides of fronds in structures called sori which are clusters of spore-producing sacs. More than 7000 species are known. This image was taken in Hawaii | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Magrath Photography |
Taille de l’image : | 3778 px × 2570 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |