Interior of an Arum italicum lily with pollinating Psychoda flies. This cut open flowerhead shows the floral parts and an insect trap. Along the central floral stalk are white ovaries (lower),yellow pollen- bearing anthers (middle),and a hair trap (above). The flies are attracted by the odour of the lily,and pass down through the hairs but cannot pass back up. For up to three days they are imprisoned within the flower,picking up pollen as they fly about,until the hair trap dies and whithers. At which time the Psychoda flies can escape. They become attracted to the odour of another Arum lily and in this way pollinate it | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Nuridsany, Claude / Perennou, Maria |
Taille de l’image : | 3425 px × 5203 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : |
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