Arum lily with pollinating flies

Arum lily with pollinating flies

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This image is part of the feature Pollination


Caption: 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.

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Keywords: arum, arum italicum, aveyron department, botany, fly, france, lily, nature, plant, plants, pollen, pollinate lily, pollination, psychoda, reproduction, reproductive

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