Young frond of Dryopteris filix-mas fern
Numéro d’image : 12099386
| A furled fern frond. The picture shows a leaf of a male fern (Dryopteris filix-mas) that has emerged from ground level in April in the UK,against a background of expanded leaflets (green). The tissues of the young leaf - which first developed in the previous autumn - have a covering of scales (reddish brown) to protect them against cold and wet during the winter months. The leaf that will result from the tissues in this picture will be flat,with pinnate green leaflets,and up to 80cm long. The width of the picture frame is 10cm. This Spring growth does not involve the production of new cells or tissues; rather it is caused by extension growth of the walls of existing cells following water uptake. The spiral axis of the leaf shown here is converted into the straight midrib of a flat mature leaf simply by faster growth of the inner spiral walls of all the cells | |
| Licence : | Droits gérés |
| Crédit: | Science Photo Library / Burgess, Dr. Jeremy |
| Taille de l’image : | 3468 px × 5212 px |
| Model Release : | Non requis |
| Property Release : | Non requis |
| Restrictions : | - |
Prix pour cette image À partir de 45 €
Produit vendu
(Calendrier, Carte postale, Carte de vœux, Impression sur textile, Packaging etc)
À partir de 45 €
Usage commercial
(Affichage, Annonce presse, Annonce TV, Carte, Digital - hors rés. sociaux, Digital - rés. sociaux etc)
À partir de 45 €
Éditorial
(Digital, Journal, Livre, Livre pratique, Magazine, Télévision etc)
À partir de 60 €
Usage non-commercial
(Digital - hors rés. sociaux, Digital - rés. sociaux etc)
À partir de 120 €