Common stinging nettle (Urtica dioica) leaf,taken in polarised light with retarders. The leaf is at right and the petiole (leaf stem) is at left. This is a cleared leaf,one that has been treated to make the veins and other leaf structures more visible. The leaf is seen from the underside,showing the stinging and non-stinging trichomes (hair-like structures). The stinging trichomes are the long,sharp ones,and the non-stinging trichomes are the shorter ones | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Wheeler, Dr. Keith |
Taille de l’image : | 3508 px × 2339 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |