Arnica stigma, SEM

Numéro d’image : 12525931
Arnica stigma, SEM
Arnica stigma. Coloured scanning electron micrograph (SEM) of the stigma (yellow) of an arnica (Arnica montana) flower. This is the top part of the female reproductive structure (carpel) of the flower. Pollen grains containing the male sex cells become trapped on the surface of the stigma. From here they grow a tube down into the ovary (not seen) to allow the male sex cells to fertilize the female sex cells (ovules). Arnica is a member of the daisy family (Asteraceae). It grows in mountainous regions of Europe. The arnica flower is used in herbal medicine to aid healing, control bleeding and to benefit the heart. Magnification: x280 when printed 10cm wide.
Licence : Droits gérés
Crédit: Science Photo Library / EYE OF SCIENCE
Taille de l’image : 4000 px × 4000 px
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Property Release : Non requis
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